organic compounds
2,3-Dimethoxybenzaldehyde isonicotinoylhydrazone chloroform monosolvate, and the mono- and dihydrates of 3,4,5-trimethoxybenzaldehyde isonicotinoylhydrazone: hydrogen-bonded supramolecular structures in one, two and three dimensions
aInstituto de Tecnologia em Fármacos, Far-Manguinhos, FIOCRUZ, 21041-250 Rio de Janeiro, RJ, Brazil, bInstituto de Química, Departamento de Química Inorgânica, Universidade Federal do Rio de Janeiro, CP 68563, 21945-970 Rio de Janeiro, RJ, Brazil, cDepartment of Chemistry, University of Aberdeen, Meston Walk, Old Aberdeen AB24 3UE, Scotland, and dSchool of Chemistry, University of St Andrews, Fife KY16 9ST, Scotland
*Correspondence e-mail: cg@st-andrews.ac.uk
In 2,3-dimethoxybenzaldehyde isonicotinoylhydrazone chloroform monosolvate, C15H15N3O3·CHCl3, the hydrazone molecules are linked by a combination of N—H⋯N and C—H⋯N hydrogen bonds into chains from which the chloroform molecules are pendent. 3,4,5-Trimethoxybenzaldehyde isonicotinoylhydrazone forms two stoichiometric hydrates. In the monohydrate, C16H17N3O4·H2O, the components are linked into sheets by a combination of O—H⋯O, O—H⋯N and N—H⋯N hydrogen bonds, and in the dihydrate, C16H17N3O4·2H2O, a combination of O—H⋯O, O—H⋯N and N—H⋯O hydrogen bonds links the components into a three-dimensional framework structure.
Comment
We report here the molecular and supramolecular structures of three methoxy-substituted benzaldehyde isonicotinoylhydrazones, namely 2,3-dimethoxybenzaldehyde isonicotinoylhydrazone which crystallizes as a chloroform monosolvate, (I), and the mono- and dihydrates of 3,4,5-trimethoxybenzaldehyde isonicotinoylhydrazone, (II) and (III), respectively (Figs. 1–3). We have undertaken this work as part of a more general study of isonicotinoylhydrazones (Wardell, de Souza, Ferreira et al., 2005; Wardell, de Souza, Wardell et al., 2005; Wardell et al., 2006; Low et al., 2006). The structure of the dihydrate, (III), has been reported previously (Bhagiratha et al., 2000), determined from diffraction data collected at ambient temperature, but the description of the supramolecular aggregation differs markedly from that deduced here.
In the organic components in each of compounds (I)–(III), the central spacer unit between atoms C14 and C21 (Figs. 1–3) is effectively planar, with an all-trans chain-extended conformation, as shown by the relevant torsion angles (Table 1). The two independent rings are only slightly twisted out of the plane of the central spacer unit, although with no evident pattern in the torsion angles defining the ring orientations. Methoxy atom C231 in (I), and the corresponding atoms C231 and C251 in the two hydrates (II) and (III), are all almost coplanar with the adjacent aryl rings, whereas the C/O/C planes containing atoms C221 in (I) and C241 in (II) and (III) are almost orthogonal to the planes of the adjacent rings. In general, isolated methoxy groups bonded to aryl rings exhibit effective coplanarity with the aryl ring (Seip & Seip, 1973; Ferguson et al., 1996; Gallagher et al., 2001, 2004). Thus, the methoxy groups in compounds (I)–(III), where the C/O/C planes are approximately normal to the planes of the adjacent aryl rings, are anomalous. If the two methoxy groups in compound (I) were both approximately coplanar with the aryl ring, with atoms C221 and C231 maximally distant from one another to minimize close repulsive H⋯O contacts involving the H atoms of one substituent and the O atom of the other, there would be close repulsive contacts between the H atoms bonded to atoms C221 and C27, hence the orthogonal conformation of the methoxy group at C22. Rather similar considerations govern the conformations adopted by the 4-methoxy groups in each of (II) and (III). As usual, the two exocyclic C—C—O angles for the orthogonal methoxy groups are very similar, whereas these two angles consistently differ by 8–10° for the coplanar methoxy groups. The organic components of hydrates (II) and (III) show no significant differences, apart from minor differences in conformation (Table 1).
The supramolecular aggregation in compound (I) is extremely simple, even though the structure contains three types of hydrogen bond (Table 2). Atoms N17 and C27 in the hydrazone molecule at (x, y, z) both act as hydrogen-bond donors to pyridyl atom N11 of the hydrazone molecule at ( − x, − + y, − z), so forming a C(7)C(9)[R21(6)] (Bernstein et al., 1995) chain of rings running parallel to the [010] direction and generated by the 21 screw axis along (, y, ) (Fig. 4). The chloroform molecules are pendent from the chain, to which they are weakly linked via a planar three-centre C—H⋯(O)2 hydrogen bond (Fig. 1 and Table 2). Two chains of this type, related to one another by inversion, pass through each but there are no direction-specific interactions between the chains, so that the supramolecular structure is strictly one-dimensional.
Within the selected , the water molecule is linked to the hydrazone component via a three-centre O—H⋯(N,O) hydrogen bond (Fig. 2 and Table 3). Two further hydrogen bonds, one each of O—H⋯O and N—H⋯N types, link these bimolecular aggregates into sheets. Water atom O2 at (x, y, z) acts as hydrogen-bond donor to atom N27 and methoxy atom O24 at (−x, − + y, − z), so forming a C22(12) chain running parallel to the [010] direction and generated by the 21 screw axis along (0, y, ). In addition, amino atom N17 at (x, y, z) acts as hydrogen-bond donor to pyridyl atom N11 at (1 − x, + y, − z), so forming a second motif running parallel to the [010] direction, this time of C(7) type and generated by the 21 screw axis along (, y, ). The combination of these two chain motifs generates a sheet of R12(5) and R66(35) rings parallel to (10) (Fig. 5). Two inversion-related sheets pass through each but there are no direction-specific interactions between adjacent sheets, so that the supramolecular structure is strictly two-dimensional.
of compound (II)The , has been selected such that the components are joined by one O—H⋯O hydrogen bond and one N—H⋯O hydrogen bond (Fig. 3 and Table 4). These three-component aggregates are linked by two-centre O—H⋯N and O—H⋯O hydrogen bonds and by a three-centre O—H⋯(O)2 hydrogen bond to form a three-dimensional framework, whose formation is readily analysed in terms of simple substructures of low dimensionality. In the first such water atom O2 at (x, y, z) acts as hydrogen-bond donor, via atom H2A, to pyridyl atom N11 at (− + x, − y, − + z), so forming a C22(9) chain running parallel to the [101] direction and generated by the n-glide plane at y = . In the second water atom O3 at (x, y, z) acts as hydrogen-bond donor, via atom H3B, to methoxy atoms O24 and O25, both at ( + x, − y, + z), thus forming a C22(12)C22(13)[R12(5)] chain of rings, again parallel to the [101] direction but now generated by the n-glide plane at y = . The combination of these two substructures then generates a sheet parallel to (10) (Fig. 6).
of the dihydrate compound, (III)Two sheets of this type, related to one another by inversion, pass through each x, y, z) acts as hydrogen-bond donor, via atom H2B, to water atom O3 at (1 − x, 1 − y, 1 − z), so generating by inversion an R66(16) motif (Fig. 7). Propagation of this motif by the links each (10) sheet to the two neighbouring sheets, so linking all of the molecular components into a single three-dimensional framework of considerable complexity.
and adjacent sheets are linked by the final substructural motif. Water atom O2 at (The structure deduced here for dihydrate (III) differs markedly from that recently reported for this compound at ambient temperature, where the structure was described in terms of sheets parallel to (010) formed by O—H⋯O and O—H⋯N hydrogen bonds (Bhagiratha et al., 2000). Although the unit-cell dimensions, and atomic coordinates reported earlier show that there has been no phase change between ambient temperature and 120 K, we find no combination of any subset of the hydrogen bonds present which can generate a sheet parallel to (010). In any event, as noted above, the supramolecular structure of (III) is three-dimensional, not two-dimensional.
It is of interest at this point briefly to compare the structures of compounds (I) and the isomeric solvent-free hydrazone (IV), which was crystallized from acetonitrile (Chen et al., 1997). In both methoxy groups of compound (IV), the methyl C atoms are essentially coplanar with the adjacent aryl ring. The supramolecular structure of (IV) was described in terms of simple chains formed by a single N—H⋯O hydrogen bond (Chen et al., 1997). In fact, these chains, which are of C(4) type, are linked into sheets by a C—H⋯π(arene) hydrogen bond, although this interaction was not mentioned in the original report. The parameters are H1⋯Cgi = 2.88 Å, C1⋯Cgi = 3.675 (3) Å and C1—H1⋯Cgi = 144°, where the original atom numbers have been used and Cg represents the centroid of the aryl ring [symmetry code: (i) 1 + x, y, z]. The resulting supramolecular structure of (IV) then takes the form of sheets parallel to (010) (Fig. 8).
Experimental
Equimolar quantities (1 mmol) of the appropriate arylaldehyde [2,3-dimethoxybenzaldehyde for the synthesis of (I), and 3,4,5-tri'methoxybenzaldehyde for (II) and (III)] and isonicotinoylhydrazine were dissolved, respectively, in ethanol (10 ml) and water (10 ml). These solutions were mixed and each mixture was stirred at room temperature until reaction was complete, as shown by Each reaction mixture was concentrated under reduced pressure. The residues were washed successively with cold ethanol and diethyl ether, and then recrystallized from ethanol. Analysis for 2,3-dimethoxybenzaldehyde isonicotinoylhydrazone: yield 90%, m.p. 413–414 K; 1H NMR (DMSO-d6): δ 12.08 (s, 1H, NH), 8.78 (d, 2H, J = 6.0 Hz, H12 and H16), 8.75 (s, 1H, H27), 7.85 (d, 2H, J = 6.0 Hz, H13 and H15), 7.48 (dd, 1H, J = 6.5 and 3.5 Hz, H24), 7.16–7.14 (m, 2H, H25 and H26), 3.83 (s, 3H, OCH3), 3.80 (s, 3H, OCH3); IR (KBr disc, ν, cm−1): 1671 (CO). Crystals grown from solution in ethanol were found to be unsuitable for single-crystal X-ray diffraction, as were crystals obtained by slow recrystallization from both methanol and acetonitrile. Crystals obtained by slow evaporation of a solution in chloroform, viz. the chloroform monosolvate (I), were found to be suitable for single-crystal X-ray for 3,4,5-trimethoxybenzaldehyde isonicotinoylhydrazone: yield 88%; 1H NMR (DMSO-d6): δ 12.06 (s, 1H, NH), 8.79 (d, 2H, J = 5.5 Hz, H12 and H16), 8.40 (s, 1H, H27), 7.84 (d, 2H, J = 5.5 Hz, H13 and H15), 7.81 (s, 2H, H22 and H26), 3.84 (s, 6H, 2 × OCH3), 3.17 (s, 3H, OCH3). Recrystallization from ethanol gave the dihydrate, (III): m.p. 466–468 K; IR (KBr disc, ν, cm−1) 1664 (CO). Further recrystallization from chloroform–propan-2-ol (1:1 v/v) produced the monohydrate, (II): IR (KBr disc, ν, cm−1) 1664 (CO).
Compound (I)
Crystal data
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Refinement
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Compound (II)
Crystal data
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Refinement
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Compound (III)
Crystal data
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Refinement
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For compounds (I) and (III), the P21/n was uniquely assigned from the and P21/c was similarly assigned for compound (II). All H atoms were located in difference maps and then treated as riding atoms, with C—H = 0.95(aromatic and –CH=N–), 0.98 (methyl) and 1.00 Å (aliphatic CH), N—H = 0.88 Å and O—H = 0.87–0.90 Å, and with Uiso(H) = kUeq(C,N,O), where k = 1.5 for the methyl groups and the water molecules or 1.2 for all other H atoms.
For all compounds, data collection: COLLECT (Nonius, 1999); cell DENZO (Otwinowski & Minor, 1997) and COLLECT; data reduction: DENZO and COLLECT; program(s) used to solve structure: OSCAIL (McArdle, 2003) and SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: OSCAIL and SHELXL97 (Sheldrick, 1997); molecular graphics: PLATON (Spek, 2003); software used to prepare material for publication: SHELXL97 and PRPKAPPA (Ferguson, 1999).
Supporting information
10.1107/S0108270106052486/gg3058sup1.cif
contains datablocks global, I, II, III. DOI:Structure factors: contains datablock I. DOI: 10.1107/S0108270106052486/gg3058Isup2.hkl
Structure factors: contains datablock II. DOI: 10.1107/S0108270106052486/gg3058IIsup3.hkl
Structure factors: contains datablock III. DOI: 10.1107/S0108270106052486/gg3058IIIsup4.hkl
Equimolar quantities of the appropriate arylaldehyde [2,3-dimethoxybenzaldehyde for the synthesis of (I), and 3,4,5-trimethoxybenzaldehyde for (II) and (III)] and isonicotinoylhydrazine were dissolved, respectively, in ethanol and water (Volumes?). These solutions were mixed and each mixture was stirred at room temperature until reaction was complete as shown by δ, p.p.m.): 12.08 (s, 1H, NH), 8.78 (d, 2H, J = 6.0 Hz, H12 and H16), 8.75 (s, 1H, H27), 7.85 (d, 2H, J = 6.0 Hz, H13 and H15), 7.48 (dd, 1H, J = 6.5 and 3.5 Hz, H24), 7.16–7.14 (m, 2H, H25 and H26), 3.83 (s, 3H, OCH3), 3.80 (s, 3H, OCH3); IR (KBr disc, ν, cm−1): 1671 (CO). Crystals grown from solution in ethanol were found to be unsuitable for single-crystal X-ray diffraction, as were crystals obtained by slow recrystallization from both methanol and acetonitrile. Crystals obtained by slow evaporation of a solution in chloroform, the chloroform monosolvate (I), were found to be suitable for single-crystal X-ray for 3,4,5-trimethoxybenzaldehyde isonicotinoylhydrazone: yield 88%; 1 NMR (DMSO-d6, δ, p.p.m.): 12.06 (s, 1H, NH), 8.79 (d, 2H, J = 5.5 Hz, H12 and H16), 8.40 (s, 1H, H27), 7.84 (d, 2H, J = 5.5 Hz, H13 and H15), 7.81 (s, 2H, H22 and H26), 3.84 (s, 6H, 2 × OCH3), 3.17 (s, 3H, OCH3). Recrystallization from ethanol gave the dihydrate, (III): m.p. 466–468 K; IR (KBr disc, ν, cm−1) 1664 (CO). Further recrystallization from chloroform–propan-2-ol (1:1 v/v) produced the monohydrate, (II): IR (KBr disc, ν, cm−1) 1664 (CO).
Each reaction mixture was concentrated under reduced pressure. The residues were washed successively with cold ethanol and diethyl ether, and then recrystallized from ethanol. Analysis for 2,3-dimethoxybenzaldehyde isonicotinoylhydrazone: yield 90%, m.p. 413–414 K; 1H NMR (DMSO-d6,For compounds (I) and (III), the ═N–), 0.98 Å (methyl) and 1.00 Å (aliphatic CH), N—H = 0.88 Å and O—H = 0.87–0.90 Å, and with Uiso(H) = kUeq(C,N,O), where k = 1.5 for the methyl groups and the water molecules or 1.2 for all other H atoms.
P21/n was uniquely assigned from the and P21/c was similarly assigned for compound (II). All H atoms were located in difference maps and then treated as riding atoms, with C—H = 0.95 Å (aromatic and –CHFor all compounds, data collection: COLLECT (Nonius, 1999); cell
DENZO (Otwinowski & Minor, 1997) and COLLECT; data reduction: DENZO and COLLECT; program(s) used to solve structure: OSCAIL (McArdle, 2003) and SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: OSCAIL and SHELXL97 (Sheldrick, 1997); molecular graphics: PLATON (Spek, 2003); software used to prepare material for publication: SHELXL97 and PRPKAPPA (Ferguson, 1999).Fig. 1. The independent molecular components of compound (I), showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability level and H atoms are shown as small spheres of arbitrary radii. | |
Fig. 2. The independent molecular components of compound (II), showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability level and H atoms are shown as small spheres of arbitrary radii. | |
Fig. 3. The independent molecular components of compound (III), showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability level and H atoms are shown as small spheres of arbitrary radii. | |
Fig. 4. Part of the crystal structure of compound (I), showing the formation of a hydrogen-bonded chain of rings along [010]. For the sake of clarity, the chloroform molecules and H atoms not involved in the motif shown have been omitted. Atoms marked with an asterisk (*), a hash (#) or an ampersand (&) are at the symmetry positions (1/2 − x, −1/2 + y, 3/2 − z), (1/2 − x, 1/2 + y, 3/2 − z) and (x, −1 + y, z), respectively. | |
Fig. 5. A stereoview of part of the crystal structure of compound (II), showing the formation of a hydrogen-bonded sheet of R21(5) and R66(35) rings parallel to (101). For the sake of clarity, H atoms bonded to C atoms have been omitted. | |
Fig. 6. A stereoview of part of the crystal structure of compound (III), showing the formation of a hydrogen-bonded sheet of R21(5) and R66(40) rings parallel to (101). For the sake of clarity, H atoms bonded to C atoms have been omitted. | |
Fig. 7. Part of the crystal structure of compound (III), showing the formation of the centrosymmetric R66(16) motif linking the (101) sheets. For the sake of clarity, H atoms bonded to C atoms have been omitted. Atoms marked with an asterisk (*) are at the symmetry position (1 − x, 1 − y, 1 − z). | |
Fig. 8. A stereoview of part of the crystal structure of compound (IV), showing the formation of a sheet parallel to (010) built from N—H···O and C—H···π(arene) hydrogen bonds. The original atom coordinates (Chen et al., 1997) have been used. For the sake of clarity, H atoms not involved in the motifs shown have been omitted. |
C15H15N3O3·CHCl3 | F(000) = 832 |
Mr = 404.67 | Dx = 1.492 Mg m−3 |
Monoclinic, P21/n | Melting point: 413 K |
Hall symbol: -P 2yn | Mo Kα radiation, λ = 0.71073 Å |
a = 12.7400 (4) Å | Cell parameters from 4128 reflections |
b = 10.8595 (3) Å | θ = 3.1–27.5° |
c = 13.9187 (4) Å | µ = 0.53 mm−1 |
β = 110.728 (1)° | T = 120 K |
V = 1801.01 (9) Å3 | Plate, colourless |
Z = 4 | 0.18 × 0.13 × 0.03 mm |
Bruker Nonius KappaCCD area-detector diffractometer | 4128 independent reflections |
Radiation source: Bruker Nonius FR591 rotating anode | 3388 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.047 |
Detector resolution: 9.091 pixels mm-1 | θmax = 27.5°, θmin = 3.1° |
ϕ and ω scans | h = −16→16 |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | k = −14→12 |
Tmin = 0.932, Tmax = 0.984 | l = −15→18 |
20128 measured reflections |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.041 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.090 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.02P)2 + 1.8708P] where P = (Fo2 + 2Fc2)/3 |
4128 reflections | (Δ/σ)max < 0.001 |
228 parameters | Δρmax = 0.40 e Å−3 |
0 restraints | Δρmin = −0.60 e Å−3 |
C15H15N3O3·CHCl3 | V = 1801.01 (9) Å3 |
Mr = 404.67 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 12.7400 (4) Å | µ = 0.53 mm−1 |
b = 10.8595 (3) Å | T = 120 K |
c = 13.9187 (4) Å | 0.18 × 0.13 × 0.03 mm |
β = 110.728 (1)° |
Bruker Nonius KappaCCD area-detector diffractometer | 4128 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | 3388 reflections with I > 2σ(I) |
Tmin = 0.932, Tmax = 0.984 | Rint = 0.047 |
20128 measured reflections |
R[F2 > 2σ(F2)] = 0.041 | 0 restraints |
wR(F2) = 0.090 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.40 e Å−3 |
4128 reflections | Δρmin = −0.60 e Å−3 |
228 parameters |
x | y | z | Uiso*/Ueq | ||
N11 | 0.22757 (13) | 0.98240 (14) | 0.77907 (12) | 0.0185 (3) | |
C12 | 0.28780 (15) | 0.88659 (17) | 0.76639 (14) | 0.0181 (4) | |
C13 | 0.24866 (15) | 0.80306 (16) | 0.68662 (14) | 0.0168 (4) | |
C14 | 0.14125 (15) | 0.81829 (16) | 0.61437 (13) | 0.0144 (4) | |
C15 | 0.07851 (15) | 0.91794 (16) | 0.62648 (14) | 0.0164 (4) | |
C16 | 0.12398 (15) | 0.99619 (17) | 0.70910 (14) | 0.0177 (4) | |
C17 | 0.09228 (15) | 0.73817 (17) | 0.52085 (13) | 0.0155 (4) | |
O1 | 0.02107 (11) | 0.77780 (12) | 0.44265 (10) | 0.0225 (3) | |
N17 | 0.13378 (13) | 0.62205 (14) | 0.53120 (11) | 0.0166 (3) | |
N27 | 0.09778 (13) | 0.54331 (14) | 0.44744 (11) | 0.0171 (3) | |
C27 | 0.14763 (15) | 0.43921 (16) | 0.46255 (14) | 0.0165 (4) | |
C21 | 0.12237 (15) | 0.34655 (16) | 0.38124 (13) | 0.0148 (4) | |
C22 | 0.18842 (14) | 0.24095 (17) | 0.39888 (13) | 0.0149 (4) | |
O22 | 0.27244 (10) | 0.22225 (11) | 0.49363 (9) | 0.0164 (3) | |
C221 | 0.23499 (16) | 0.14032 (18) | 0.55703 (14) | 0.0210 (4) | |
C23 | 0.17311 (15) | 0.15285 (16) | 0.32166 (14) | 0.0164 (4) | |
O23 | 0.24417 (11) | 0.05456 (12) | 0.34760 (10) | 0.0216 (3) | |
C231 | 0.22892 (19) | −0.0361 (2) | 0.26949 (18) | 0.0357 (6) | |
C24 | 0.08938 (16) | 0.17058 (17) | 0.22664 (14) | 0.0191 (4) | |
C25 | 0.02193 (16) | 0.27503 (18) | 0.20963 (14) | 0.0202 (4) | |
C26 | 0.03706 (15) | 0.36202 (17) | 0.28503 (14) | 0.0183 (4) | |
C1 | 0.48909 (17) | 0.20831 (19) | 0.40932 (15) | 0.0247 (4) | |
Cl1 | 0.45379 (4) | 0.19099 (5) | 0.27618 (4) | 0.02812 (13) | |
Cl2 | 0.59683 (5) | 0.10637 (5) | 0.47660 (4) | 0.03738 (15) | |
Cl3 | 0.53302 (6) | 0.36172 (5) | 0.44572 (4) | 0.04491 (18) | |
H12 | 0.3615 | 0.8755 | 0.8149 | 0.022* | |
H13 | 0.2944 | 0.7363 | 0.6812 | 0.020* | |
H15 | 0.0051 | 0.9321 | 0.5784 | 0.020* | |
H16 | 0.0797 | 1.0632 | 0.7168 | 0.021* | |
H17 | 0.1828 | 0.5970 | 0.5901 | 0.020* | |
H27 | 0.2023 | 0.4216 | 0.5280 | 0.020* | |
H22A | 0.1681 | 0.1749 | 0.5662 | 0.032* | |
H22B | 0.2947 | 0.1309 | 0.6242 | 0.032* | |
H22C | 0.2168 | 0.0597 | 0.5236 | 0.032* | |
H23A | 0.1522 | −0.0684 | 0.2478 | 0.054* | |
H23B | 0.2824 | −0.1035 | 0.2966 | 0.054* | |
H23C | 0.2416 | 0.0013 | 0.2105 | 0.054* | |
H24 | 0.0782 | 0.1117 | 0.1734 | 0.023* | |
H25 | −0.0357 | 0.2864 | 0.1446 | 0.024* | |
H26 | −0.0101 | 0.4325 | 0.2721 | 0.022* | |
H1 | 0.4214 | 0.1904 | 0.4275 | 0.030* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N11 | 0.0217 (8) | 0.0159 (8) | 0.0160 (8) | −0.0014 (6) | 0.0043 (6) | −0.0007 (6) |
C12 | 0.0181 (9) | 0.0173 (9) | 0.0155 (9) | −0.0006 (7) | 0.0018 (7) | 0.0017 (7) |
C13 | 0.0172 (9) | 0.0135 (8) | 0.0185 (9) | 0.0016 (7) | 0.0048 (7) | 0.0021 (7) |
C14 | 0.0174 (8) | 0.0127 (8) | 0.0137 (8) | −0.0018 (7) | 0.0065 (7) | 0.0021 (7) |
C15 | 0.0147 (8) | 0.0172 (9) | 0.0159 (9) | −0.0002 (7) | 0.0038 (7) | 0.0006 (7) |
C16 | 0.0207 (9) | 0.0147 (9) | 0.0188 (9) | 0.0009 (7) | 0.0082 (7) | 0.0010 (7) |
C17 | 0.0150 (8) | 0.0156 (9) | 0.0165 (9) | −0.0006 (7) | 0.0062 (7) | −0.0002 (7) |
O1 | 0.0236 (7) | 0.0224 (7) | 0.0157 (7) | 0.0071 (6) | −0.0003 (6) | −0.0016 (5) |
N17 | 0.0192 (8) | 0.0144 (7) | 0.0127 (7) | 0.0009 (6) | 0.0012 (6) | −0.0013 (6) |
N27 | 0.0190 (8) | 0.0158 (8) | 0.0152 (7) | −0.0019 (6) | 0.0044 (6) | −0.0036 (6) |
C27 | 0.0182 (9) | 0.0157 (9) | 0.0136 (8) | −0.0006 (7) | 0.0033 (7) | 0.0000 (7) |
C21 | 0.0167 (8) | 0.0146 (9) | 0.0137 (8) | −0.0023 (7) | 0.0062 (7) | −0.0002 (7) |
C22 | 0.0127 (8) | 0.0181 (9) | 0.0139 (8) | −0.0023 (7) | 0.0045 (7) | 0.0009 (7) |
O22 | 0.0148 (6) | 0.0184 (6) | 0.0140 (6) | −0.0003 (5) | 0.0027 (5) | 0.0023 (5) |
C221 | 0.0180 (9) | 0.0237 (10) | 0.0203 (9) | 0.0010 (8) | 0.0057 (8) | 0.0076 (8) |
C23 | 0.0151 (8) | 0.0139 (9) | 0.0214 (9) | −0.0006 (7) | 0.0077 (7) | −0.0005 (7) |
O23 | 0.0207 (7) | 0.0171 (7) | 0.0242 (7) | 0.0049 (5) | 0.0047 (6) | −0.0053 (5) |
C231 | 0.0311 (12) | 0.0271 (12) | 0.0398 (13) | 0.0092 (10) | 0.0012 (10) | −0.0168 (10) |
C24 | 0.0226 (9) | 0.0188 (9) | 0.0166 (9) | −0.0014 (8) | 0.0078 (7) | −0.0040 (7) |
C25 | 0.0194 (9) | 0.0229 (10) | 0.0151 (9) | 0.0004 (8) | 0.0023 (7) | 0.0004 (7) |
C26 | 0.0190 (9) | 0.0157 (9) | 0.0185 (9) | 0.0018 (7) | 0.0047 (7) | 0.0006 (7) |
C1 | 0.0244 (10) | 0.0249 (10) | 0.0254 (10) | 0.0044 (8) | 0.0095 (8) | 0.0016 (8) |
Cl1 | 0.0273 (3) | 0.0304 (3) | 0.0249 (3) | 0.0020 (2) | 0.0071 (2) | −0.0064 (2) |
Cl2 | 0.0376 (3) | 0.0400 (3) | 0.0385 (3) | 0.0186 (3) | 0.0184 (3) | 0.0179 (2) |
Cl3 | 0.0703 (4) | 0.0274 (3) | 0.0243 (3) | 0.0043 (3) | 0.0010 (3) | −0.0048 (2) |
N11—C12 | 1.341 (2) | C22—C23 | 1.400 (3) |
N11—C16 | 1.343 (2) | O22—C221 | 1.448 (2) |
C12—C13 | 1.383 (3) | C221—H22A | 0.98 |
C12—H12 | 0.95 | C221—H22B | 0.98 |
C13—C14 | 1.392 (2) | C221—H22C | 0.98 |
C13—H13 | 0.95 | C23—O23 | 1.363 (2) |
C14—C15 | 1.390 (3) | C23—C24 | 1.388 (3) |
C14—C17 | 1.505 (2) | O23—C231 | 1.428 (2) |
C15—C16 | 1.382 (3) | C231—H23A | 0.98 |
C15—H15 | 0.95 | C231—H23B | 0.98 |
C16—H16 | 0.95 | C231—H23C | 0.98 |
C17—O1 | 1.222 (2) | C24—C25 | 1.392 (3) |
C17—N17 | 1.355 (2) | C24—H24 | 0.95 |
N17—N27 | 1.386 (2) | C25—C26 | 1.374 (3) |
N17—H17 | 0.88 | C25—H25 | 0.95 |
N27—C27 | 1.277 (2) | C26—H26 | 0.95 |
C27—C21 | 1.463 (2) | C1—Cl2 | 1.754 (2) |
C27—H27 | 0.95 | C1—Cl1 | 1.755 (2) |
C21—C22 | 1.392 (3) | C1—Cl3 | 1.773 (2) |
C21—C26 | 1.404 (2) | C1—H1 | 1.00 |
C22—O22 | 1.388 (2) | ||
C12—N11—C16 | 116.89 (16) | C22—O22—C221 | 111.05 (13) |
N11—C12—C13 | 123.65 (17) | O22—C221—H22A | 109.5 |
N11—C12—H12 | 118.2 | O22—C221—H22B | 109.5 |
C13—C12—H12 | 118.2 | H22A—C221—H22B | 109.5 |
C12—C13—C14 | 119.02 (17) | O22—C221—H22C | 109.5 |
C12—C13—H13 | 120.5 | H22A—C221—H22C | 109.5 |
C14—C13—H13 | 120.5 | H22B—C221—H22C | 109.5 |
C15—C14—C13 | 117.73 (16) | O23—C23—C24 | 125.14 (17) |
C15—C14—C17 | 118.33 (15) | O23—C23—C22 | 115.64 (16) |
C13—C14—C17 | 123.83 (16) | C24—C23—C22 | 119.21 (16) |
C16—C15—C14 | 119.34 (16) | C23—O23—C231 | 116.08 (15) |
C16—C15—H15 | 120.3 | O23—C231—H23A | 109.5 |
C14—C15—H15 | 120.3 | O23—C231—H23B | 109.5 |
N11—C16—C15 | 123.37 (17) | H23A—C231—H23B | 109.5 |
N11—C16—H16 | 118.3 | O23—C231—H23C | 109.5 |
C15—C16—H16 | 118.3 | H23A—C231—H23C | 109.5 |
O1—C17—N17 | 124.12 (16) | H23B—C231—H23C | 109.5 |
O1—C17—C14 | 121.09 (16) | C23—C24—C25 | 119.69 (17) |
N17—C17—C14 | 114.79 (15) | C23—C24—H24 | 120.2 |
C17—N17—N27 | 118.95 (14) | C25—C24—H24 | 120.2 |
C17—N17—H17 | 120.5 | C26—C25—C24 | 121.27 (17) |
N27—N17—H17 | 120.5 | C26—C25—H25 | 119.4 |
C27—N27—N17 | 114.22 (15) | C24—C25—H25 | 119.4 |
N27—C27—C21 | 121.41 (16) | C25—C26—C21 | 119.87 (17) |
N27—C27—H27 | 119.3 | C25—C26—H26 | 120.1 |
C21—C27—H27 | 119.3 | C21—C26—H26 | 120.1 |
C22—C21—C26 | 118.83 (16) | Cl2—C1—Cl1 | 110.83 (11) |
C22—C21—C27 | 118.47 (15) | Cl2—C1—Cl3 | 109.41 (11) |
C26—C21—C27 | 122.65 (16) | Cl1—C1—Cl3 | 109.83 (11) |
O22—C22—C21 | 120.19 (16) | Cl2—C1—H1 | 108.9 |
O22—C22—C23 | 118.71 (16) | Cl1—C1—H1 | 108.9 |
C21—C22—C23 | 121.09 (16) | Cl3—C1—H1 | 108.9 |
C16—N11—C12—C13 | −0.3 (3) | C26—C21—C22—O22 | −179.16 (16) |
N11—C12—C13—C14 | 0.4 (3) | C27—C21—C22—O22 | 3.2 (3) |
C12—C13—C14—C15 | 0.1 (3) | C26—C21—C22—C23 | 1.9 (3) |
C12—C13—C14—C17 | 176.08 (17) | C27—C21—C22—C23 | −175.74 (16) |
C13—C14—C15—C16 | −0.7 (3) | C21—C22—O22—C221 | 98.85 (19) |
C17—C14—C15—C16 | −176.90 (16) | C23—C22—O22—C221 | −82.2 (2) |
C12—N11—C16—C15 | −0.3 (3) | O22—C22—C23—O23 | 0.0 (2) |
C14—C15—C16—N11 | 0.8 (3) | C21—C22—C23—O23 | 178.88 (16) |
C15—C14—C17—O1 | 24.0 (3) | O22—C22—C23—C24 | 180.00 (16) |
C13—C14—C17—O1 | −151.96 (18) | C21—C22—C23—C24 | −1.1 (3) |
C15—C14—C17—N17 | −156.28 (16) | C24—C23—O23—C231 | −0.3 (3) |
C13—C14—C17—N17 | 27.7 (2) | C22—C23—O23—C231 | 179.73 (18) |
O1—C17—N17—N27 | 2.8 (3) | O23—C23—C24—C25 | 179.89 (18) |
C14—C17—N17—N27 | −176.86 (15) | C22—C23—C24—C25 | −0.2 (3) |
C17—N17—N27—C27 | 175.15 (16) | C23—C24—C25—C26 | 0.5 (3) |
N17—N27—C27—C21 | −178.11 (16) | C24—C25—C26—C21 | 0.4 (3) |
N27—C27—C21—C22 | 172.79 (17) | C22—C21—C26—C25 | −1.6 (3) |
N27—C27—C21—C26 | −4.8 (3) | C27—C21—C26—C25 | 176.00 (18) |
D—H···A | D—H | H···A | D···A | D—H···A |
N17—H17···N11i | 0.88 | 2.17 | 3.015 (2) | 162 |
C1—H1···O22 | 1.00 | 2.41 | 3.363 (2) | 159 |
C1—H1···O23 | 1.00 | 2.59 | 3.371 (3) | 134 |
C27—H27···N11i | 0.95 | 2.60 | 3.411 (2) | 144 |
Symmetry code: (i) −x+1/2, y−1/2, −z+3/2. |
C16H17N3O4·H2O | F(000) = 704 |
Mr = 333.34 | Dx = 1.376 Mg m−3 |
Monoclinic, P21/c | Melting point: 467 K |
Hall symbol: -P 2ybc | Mo Kα radiation, λ = 0.71073 Å |
a = 10.8081 (6) Å | Cell parameters from 3686 reflections |
b = 10.3597 (3) Å | θ = 2.4–27.6° |
c = 14.4270 (7) Å | µ = 0.10 mm−1 |
β = 95.281 (2)° | T = 120 K |
V = 1608.52 (13) Å3 | Plate, colourless |
Z = 4 | 0.20 × 0.20 × 0.05 mm |
Bruker Nonius KappaCCD area-detector diffractometer | 3686 independent reflections |
Radiation source: Bruker Nonius FR591 rotating anode | 2480 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.048 |
Detector resolution: 9.091 pixels mm-1 | θmax = 27.6°, θmin = 2.4° |
ϕ and ω scans | h = −11→14 |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | k = −13→13 |
Tmin = 0.967, Tmax = 0.995 | l = −18→18 |
15972 measured reflections |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.047 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.133 | H-atom parameters constrained |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0714P)2 + 0.2493P] where P = (Fo2 + 2Fc2)/3 |
3686 reflections | (Δ/σ)max < 0.001 |
220 parameters | Δρmax = 0.21 e Å−3 |
0 restraints | Δρmin = −0.29 e Å−3 |
C16H17N3O4·H2O | V = 1608.52 (13) Å3 |
Mr = 333.34 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 10.8081 (6) Å | µ = 0.10 mm−1 |
b = 10.3597 (3) Å | T = 120 K |
c = 14.4270 (7) Å | 0.20 × 0.20 × 0.05 mm |
β = 95.281 (2)° |
Bruker Nonius KappaCCD area-detector diffractometer | 3686 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | 2480 reflections with I > 2σ(I) |
Tmin = 0.967, Tmax = 0.995 | Rint = 0.048 |
15972 measured reflections |
R[F2 > 2σ(F2)] = 0.047 | 0 restraints |
wR(F2) = 0.133 | H-atom parameters constrained |
S = 1.03 | Δρmax = 0.21 e Å−3 |
3686 reflections | Δρmin = −0.29 e Å−3 |
220 parameters |
x | y | z | Uiso*/Ueq | ||
N11 | 0.58743 (14) | 0.02109 (12) | 0.76354 (9) | 0.0215 (3) | |
C12 | 0.50542 (18) | 0.11347 (15) | 0.77901 (11) | 0.0233 (4) | |
C13 | 0.45279 (17) | 0.19599 (15) | 0.71086 (11) | 0.0214 (4) | |
C14 | 0.48758 (16) | 0.18307 (14) | 0.62074 (11) | 0.0183 (4) | |
C15 | 0.57154 (16) | 0.08648 (15) | 0.60377 (12) | 0.0209 (4) | |
C16 | 0.61908 (17) | 0.00829 (16) | 0.67642 (11) | 0.0215 (4) | |
C17 | 0.43634 (17) | 0.26361 (15) | 0.53950 (11) | 0.0203 (4) | |
O1 | 0.44437 (14) | 0.22647 (11) | 0.45970 (8) | 0.0320 (3) | |
N17 | 0.38043 (14) | 0.37580 (12) | 0.56025 (9) | 0.0201 (3) | |
N27 | 0.32816 (14) | 0.44914 (13) | 0.48629 (9) | 0.0207 (3) | |
C21 | 0.20923 (16) | 0.63447 (14) | 0.43460 (11) | 0.0194 (4) | |
C27 | 0.27012 (17) | 0.55110 (15) | 0.50791 (11) | 0.0213 (4) | |
C22 | 0.11573 (17) | 0.71712 (15) | 0.45893 (12) | 0.0221 (4) | |
C23 | 0.05273 (16) | 0.79419 (14) | 0.39082 (12) | 0.0216 (4) | |
O23 | −0.04416 (12) | 0.87398 (11) | 0.40643 (9) | 0.0287 (3) | |
C231 | −0.0971 (2) | 0.85704 (19) | 0.49307 (14) | 0.0354 (5) | |
C24 | 0.08617 (16) | 0.79116 (14) | 0.30013 (11) | 0.0213 (4) | |
C241 | 0.06472 (19) | 0.99143 (16) | 0.22163 (13) | 0.0286 (4) | |
O24 | 0.02084 (12) | 0.86211 (11) | 0.23053 (8) | 0.0261 (3) | |
C25 | 0.18028 (17) | 0.70794 (14) | 0.27631 (11) | 0.0201 (4) | |
O25 | 0.20376 (12) | 0.71095 (11) | 0.18479 (8) | 0.0254 (3) | |
C251 | 0.28537 (19) | 0.61441 (18) | 0.15469 (12) | 0.0303 (4) | |
C26 | 0.24135 (16) | 0.62851 (15) | 0.34344 (11) | 0.0203 (4) | |
O2 | 0.21573 (13) | 0.25793 (13) | 0.32528 (10) | 0.0387 (4) | |
H12 | 0.4818 | 0.1231 | 0.8405 | 0.028* | |
H13 | 0.3944 | 0.2598 | 0.7252 | 0.026* | |
H15 | 0.5962 | 0.0741 | 0.5429 | 0.025* | |
H16 | 0.6767 | −0.0573 | 0.6639 | 0.026* | |
H17 | 0.3774 | 0.4010 | 0.6182 | 0.024* | |
H27 | 0.2663 | 0.5730 | 0.5715 | 0.026* | |
H22 | 0.0951 | 0.7209 | 0.5215 | 0.027* | |
H23A | −0.1211 | 0.7665 | 0.4997 | 0.053* | |
H23B | −0.1706 | 0.9122 | 0.4943 | 0.053* | |
H23C | −0.0357 | 0.8808 | 0.5445 | 0.053* | |
H24A | 0.0550 | 1.0391 | 0.2792 | 0.043* | |
H24B | 0.0165 | 1.0340 | 0.1695 | 0.043* | |
H24C | 0.1527 | 0.9898 | 0.2101 | 0.043* | |
H25A | 0.3679 | 0.6249 | 0.1880 | 0.045* | |
H25B | 0.2914 | 0.6233 | 0.0876 | 0.045* | |
H25C | 0.2528 | 0.5287 | 0.1678 | 0.045* | |
H26 | 0.3043 | 0.5708 | 0.3273 | 0.024* | |
H2A | 0.2584 | 0.3018 | 0.3717 | 0.058* | |
H2B | 0.1492 | 0.3077 | 0.3083 | 0.058* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N11 | 0.0272 (9) | 0.0181 (7) | 0.0182 (7) | −0.0008 (6) | −0.0033 (6) | −0.0001 (5) |
C12 | 0.0353 (11) | 0.0197 (8) | 0.0149 (8) | −0.0013 (7) | 0.0029 (7) | 0.0008 (6) |
C13 | 0.0290 (10) | 0.0160 (8) | 0.0193 (9) | 0.0011 (7) | 0.0031 (7) | −0.0013 (6) |
C14 | 0.0218 (10) | 0.0149 (8) | 0.0175 (8) | −0.0029 (6) | −0.0017 (7) | 0.0006 (6) |
C15 | 0.0239 (10) | 0.0214 (8) | 0.0177 (8) | −0.0007 (7) | 0.0029 (7) | 0.0000 (6) |
C16 | 0.0227 (10) | 0.0210 (8) | 0.0205 (9) | 0.0019 (7) | 0.0007 (7) | −0.0005 (6) |
C17 | 0.0253 (10) | 0.0187 (8) | 0.0168 (9) | −0.0009 (7) | 0.0011 (7) | 0.0015 (6) |
O1 | 0.0546 (10) | 0.0255 (7) | 0.0155 (7) | 0.0119 (6) | 0.0016 (6) | 0.0005 (5) |
N17 | 0.0301 (9) | 0.0165 (7) | 0.0129 (7) | 0.0031 (6) | −0.0033 (6) | 0.0010 (5) |
N27 | 0.0286 (9) | 0.0181 (7) | 0.0143 (7) | 0.0011 (6) | −0.0037 (6) | 0.0026 (5) |
C21 | 0.0252 (10) | 0.0140 (7) | 0.0178 (8) | −0.0023 (6) | −0.0042 (7) | −0.0007 (6) |
C27 | 0.0285 (10) | 0.0175 (8) | 0.0168 (8) | −0.0012 (7) | −0.0038 (7) | 0.0000 (6) |
C22 | 0.0296 (10) | 0.0176 (8) | 0.0185 (9) | −0.0021 (7) | −0.0008 (7) | −0.0022 (6) |
C23 | 0.0222 (10) | 0.0164 (8) | 0.0256 (9) | 0.0014 (7) | −0.0018 (7) | −0.0027 (7) |
O23 | 0.0310 (8) | 0.0268 (6) | 0.0282 (7) | 0.0098 (5) | 0.0027 (6) | 0.0010 (5) |
C231 | 0.0356 (12) | 0.0351 (11) | 0.0365 (11) | 0.0109 (9) | 0.0082 (9) | 0.0008 (9) |
C24 | 0.0232 (10) | 0.0155 (8) | 0.0234 (9) | −0.0015 (6) | −0.0074 (7) | 0.0027 (6) |
C241 | 0.0332 (12) | 0.0197 (9) | 0.0321 (11) | 0.0016 (7) | −0.0015 (8) | 0.0070 (7) |
O24 | 0.0282 (7) | 0.0203 (6) | 0.0277 (7) | 0.0005 (5) | −0.0085 (5) | 0.0061 (5) |
C25 | 0.0246 (10) | 0.0172 (8) | 0.0177 (8) | −0.0035 (7) | −0.0023 (7) | 0.0015 (6) |
O25 | 0.0317 (8) | 0.0273 (7) | 0.0169 (6) | 0.0056 (5) | 0.0006 (5) | 0.0048 (5) |
C251 | 0.0356 (12) | 0.0344 (10) | 0.0212 (9) | 0.0078 (8) | 0.0035 (8) | 0.0016 (7) |
C26 | 0.0218 (10) | 0.0173 (8) | 0.0210 (9) | −0.0004 (6) | −0.0017 (7) | 0.0010 (6) |
O2 | 0.0321 (9) | 0.0403 (8) | 0.0422 (9) | 0.0080 (6) | −0.0049 (6) | −0.0060 (6) |
N11—C12 | 1.337 (2) | C23—O23 | 1.369 (2) |
N11—C16 | 1.339 (2) | C23—C24 | 1.389 (2) |
C12—C13 | 1.385 (2) | O23—C231 | 1.432 (2) |
C12—H12 | 0.95 | C231—H23A | 0.98 |
C13—C14 | 1.393 (2) | C231—H23B | 0.98 |
C13—H13 | 0.95 | C231—H23C | 0.98 |
C14—C15 | 1.388 (2) | C24—O24 | 1.3844 (19) |
C14—C17 | 1.502 (2) | C24—C25 | 1.400 (2) |
C15—C16 | 1.385 (2) | C241—O24 | 1.431 (2) |
C15—H15 | 0.95 | C241—H24A | 0.98 |
C16—H16 | 0.95 | C241—H24B | 0.98 |
C17—O1 | 1.2245 (19) | C241—H24C | 0.98 |
C17—N17 | 1.356 (2) | C25—O25 | 1.368 (2) |
N17—N27 | 1.3870 (18) | C25—C26 | 1.390 (2) |
N17—H17 | 0.88 | O25—C251 | 1.427 (2) |
N27—C27 | 1.282 (2) | C251—H25A | 0.98 |
C21—C26 | 1.392 (2) | C251—H25B | 0.98 |
C21—C22 | 1.394 (2) | C251—H25C | 0.98 |
C21—C27 | 1.473 (2) | C26—H26 | 0.95 |
C27—H27 | 0.95 | O2—H2A | 0.90 |
C22—C23 | 1.394 (2) | O2—H2B | 0.90 |
C22—H22 | 0.95 | ||
C12—N11—C16 | 117.26 (14) | O23—C23—C22 | 124.14 (16) |
N11—C12—C13 | 123.95 (15) | C24—C23—C22 | 119.89 (16) |
N11—C12—H12 | 118.0 | C23—O23—C231 | 116.27 (13) |
C13—C12—H12 | 118.0 | O23—C231—H23A | 109.5 |
C12—C13—C14 | 118.35 (15) | O23—C231—H23B | 109.5 |
C12—C13—H13 | 120.8 | H23A—C231—H23B | 109.5 |
C14—C13—H13 | 120.8 | O23—C231—H23C | 109.5 |
C15—C14—C13 | 118.11 (14) | H23A—C231—H23C | 109.5 |
C15—C14—C17 | 117.58 (14) | H23B—C231—H23C | 109.5 |
C13—C14—C17 | 124.27 (15) | O24—C24—C23 | 120.76 (15) |
C16—C15—C14 | 119.42 (15) | O24—C24—C25 | 118.85 (15) |
C16—C15—H15 | 120.3 | C23—C24—C25 | 120.19 (15) |
C14—C15—H15 | 120.3 | O24—C241—H24A | 109.5 |
N11—C16—C15 | 122.90 (16) | O24—C241—H24B | 109.5 |
N11—C16—H16 | 118.6 | H24A—C241—H24B | 109.5 |
C15—C16—H16 | 118.6 | O24—C241—H24C | 109.5 |
O1—C17—N17 | 123.26 (15) | H24A—C241—H24C | 109.5 |
O1—C17—C14 | 120.40 (14) | H24B—C241—H24C | 109.5 |
N17—C17—C14 | 116.33 (14) | C24—O24—C241 | 114.27 (13) |
C17—N17—N27 | 117.25 (13) | O25—C25—C26 | 124.59 (15) |
C17—N17—H17 | 121.4 | O25—C25—C24 | 115.24 (14) |
N27—N17—H17 | 121.4 | C26—C25—C24 | 120.17 (15) |
C27—N27—N17 | 115.98 (13) | C25—O25—C251 | 116.90 (12) |
C26—C21—C22 | 120.98 (15) | O25—C251—H25A | 109.5 |
C26—C21—C27 | 121.23 (15) | O25—C251—H25B | 109.5 |
C22—C21—C27 | 117.76 (15) | H25A—C251—H25B | 109.5 |
N27—C27—C21 | 120.33 (15) | O25—C251—H25C | 109.5 |
N27—C27—H27 | 119.8 | H25A—C251—H25C | 109.5 |
C21—C27—H27 | 119.8 | H25B—C251—H25C | 109.5 |
C21—C22—C23 | 119.52 (15) | C25—C26—C21 | 119.22 (16) |
C21—C22—H22 | 120.2 | C25—C26—H26 | 120.4 |
C23—C22—H22 | 120.2 | C21—C26—H26 | 120.4 |
O23—C23—C24 | 115.97 (14) | H2A—O2—H2B | 104.8 |
C16—N11—C12—C13 | −0.4 (2) | C21—C22—C23—O23 | 176.85 (15) |
N11—C12—C13—C14 | −0.4 (3) | C21—C22—C23—C24 | −2.1 (2) |
C12—C13—C14—C15 | 1.2 (2) | C24—C23—O23—C231 | 166.68 (15) |
C12—C13—C14—C17 | 178.64 (15) | C22—C23—O23—C231 | −12.3 (2) |
C13—C14—C15—C16 | −1.0 (2) | O23—C23—C24—O24 | −2.2 (2) |
C17—C14—C15—C16 | −178.70 (15) | C22—C23—C24—O24 | 176.80 (14) |
C12—N11—C16—C15 | 0.5 (2) | O23—C23—C24—C25 | −176.98 (15) |
C14—C15—C16—N11 | 0.2 (3) | C22—C23—C24—C25 | 2.0 (2) |
C15—C14—C17—O1 | 17.1 (2) | C23—C24—O24—C241 | 87.82 (19) |
C13—C14—C17—O1 | −160.42 (17) | C25—C24—O24—C241 | −97.33 (18) |
C15—C14—C17—N17 | −163.98 (15) | O24—C24—C25—O25 | 3.8 (2) |
C13—C14—C17—N17 | 18.5 (2) | C23—C24—C25—O25 | 178.68 (14) |
O1—C17—N17—N27 | 1.4 (3) | O24—C24—C25—C26 | −175.31 (14) |
C14—C17—N17—N27 | −177.52 (14) | C23—C24—C25—C26 | −0.4 (2) |
C17—N17—N27—C27 | 176.37 (16) | C26—C25—O25—C251 | 8.2 (2) |
N17—N27—C27—C21 | −178.87 (14) | C24—C25—O25—C251 | −170.87 (15) |
C26—C21—C27—N27 | −18.8 (2) | O25—C25—C26—C21 | 179.88 (15) |
C22—C21—C27—N27 | 159.37 (17) | C24—C25—C26—C21 | −1.1 (2) |
C26—C21—C22—C23 | 0.5 (2) | C22—C21—C26—C25 | 1.0 (2) |
C27—C21—C22—C23 | −177.69 (15) | C27—C21—C26—C25 | 179.21 (15) |
D—H···A | D—H | H···A | D···A | D—H···A |
N17—H17···N11i | 0.88 | 2.12 | 2.947 (2) | 157 |
O2—H2A···O1 | 0.90 | 2.41 | 3.015 (2) | 125 |
O2—H2A···N27 | 0.90 | 2.32 | 3.206 (2) | 166 |
O2—H2B···O24ii | 0.90 | 1.95 | 2.823 (2) | 162 |
Symmetry codes: (i) −x+1, y+1/2, −z+3/2; (ii) −x, y−1/2, −z+1/2. |
C16H17N3O4·2H2O | F(000) = 744 |
Mr = 351.36 | Dx = 1.371 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 3890 reflections |
a = 8.9930 (5) Å | θ = 2.6–27.6° |
b = 16.2713 (10) Å | µ = 0.11 mm−1 |
c = 11.6311 (6) Å | T = 120 K |
β = 90.354 (3)° | Lath, colourless |
V = 1701.92 (17) Å3 | 0.48 × 0.10 × 0.01 mm |
Z = 4 |
Bruker Nonius KappaCCD area-detector diffractometer | 3890 independent reflections |
Radiation source: Bruker Nonius FR591 rotating anode | 2409 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.090 |
Detector resolution: 9.091 pixels mm-1 | θmax = 27.6°, θmin = 2.6° |
ϕ and ω scans | h = −11→11 |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | k = −21→20 |
Tmin = 0.966, Tmax = 0.999 | l = −15→15 |
21442 measured reflections |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.065 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.121 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0413P)2 + 0.796P] where P = (Fo2 + 2Fc2)/3 |
3890 reflections | (Δ/σ)max = 0.002 |
229 parameters | Δρmax = 0.21 e Å−3 |
0 restraints | Δρmin = −0.24 e Å−3 |
C16H17N3O4·2H2O | V = 1701.92 (17) Å3 |
Mr = 351.36 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 8.9930 (5) Å | µ = 0.11 mm−1 |
b = 16.2713 (10) Å | T = 120 K |
c = 11.6311 (6) Å | 0.48 × 0.10 × 0.01 mm |
β = 90.354 (3)° |
Bruker Nonius KappaCCD area-detector diffractometer | 3890 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | 2409 reflections with I > 2σ(I) |
Tmin = 0.966, Tmax = 0.999 | Rint = 0.090 |
21442 measured reflections |
R[F2 > 2σ(F2)] = 0.065 | 0 restraints |
wR(F2) = 0.121 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.21 e Å−3 |
3890 reflections | Δρmin = −0.24 e Å−3 |
229 parameters |
x | y | z | Uiso*/Ueq | ||
N11 | 1.0327 (2) | 0.68440 (11) | 0.80314 (15) | 0.0268 (5) | |
C12 | 0.9186 (3) | 0.70929 (14) | 0.73826 (19) | 0.0286 (5) | |
C13 | 0.8480 (2) | 0.66129 (13) | 0.65684 (18) | 0.0251 (5) | |
C14 | 0.8961 (2) | 0.58113 (13) | 0.64087 (17) | 0.0199 (5) | |
C15 | 1.0161 (2) | 0.55471 (14) | 0.70717 (17) | 0.0224 (5) | |
C16 | 1.0793 (2) | 0.60735 (14) | 0.78556 (18) | 0.0242 (5) | |
C17 | 0.8275 (2) | 0.51997 (14) | 0.55960 (17) | 0.0207 (5) | |
O1 | 0.86770 (16) | 0.44784 (9) | 0.55984 (12) | 0.0249 (4) | |
N17 | 0.72086 (19) | 0.54970 (10) | 0.48753 (14) | 0.0209 (4) | |
N27 | 0.65662 (19) | 0.49611 (11) | 0.40880 (14) | 0.0220 (4) | |
C27 | 0.5482 (2) | 0.52674 (13) | 0.35114 (17) | 0.0214 (5) | |
C21 | 0.4712 (2) | 0.48049 (13) | 0.26075 (17) | 0.0201 (5) | |
C22 | 0.3589 (2) | 0.52179 (13) | 0.20126 (18) | 0.0216 (5) | |
C23 | 0.2834 (2) | 0.48265 (13) | 0.11183 (18) | 0.0209 (5) | |
O23 | 0.16987 (16) | 0.51694 (9) | 0.04958 (12) | 0.0243 (4) | |
C231 | 0.1219 (3) | 0.59722 (14) | 0.0828 (2) | 0.0294 (6) | |
C24 | 0.3213 (2) | 0.40283 (13) | 0.08293 (17) | 0.0205 (5) | |
O24 | 0.24446 (16) | 0.36157 (8) | −0.00298 (11) | 0.0225 (4) | |
C241 | 0.2936 (3) | 0.38260 (15) | −0.11629 (18) | 0.0317 (6) | |
C25 | 0.4325 (2) | 0.36127 (13) | 0.14397 (18) | 0.0219 (5) | |
C251 | 0.5604 (3) | 0.23406 (14) | 0.1718 (2) | 0.0329 (6) | |
O25 | 0.45521 (17) | 0.28201 (9) | 0.10813 (13) | 0.0282 (4) | |
C26 | 0.5081 (2) | 0.39941 (13) | 0.23326 (18) | 0.0215 (5) | |
O2 | 0.56908 (17) | 0.70492 (9) | 0.49034 (13) | 0.0297 (4) | |
O3 | 0.72426 (17) | 0.31146 (9) | 0.44996 (13) | 0.0315 (4) | |
H12 | 0.8835 | 0.7638 | 0.7488 | 0.034* | |
H13 | 0.7679 | 0.6827 | 0.6125 | 0.030* | |
H15 | 1.0540 | 0.5006 | 0.6982 | 0.027* | |
H16 | 1.1611 | 0.5880 | 0.8300 | 0.029* | |
H17 | 0.6933 | 0.6015 | 0.4907 | 0.025* | |
H27 | 0.5168 | 0.5812 | 0.3675 | 0.026* | |
H22 | 0.3339 | 0.5766 | 0.2217 | 0.026* | |
H23A | 0.1005 | 0.5977 | 0.1653 | 0.044* | |
H23B | 0.0319 | 0.6119 | 0.0395 | 0.044* | |
H23C | 0.2006 | 0.6371 | 0.0662 | 0.044* | |
H24A | 0.2780 | 0.4415 | −0.1296 | 0.048* | |
H24B | 0.2367 | 0.3510 | −0.1732 | 0.048* | |
H24C | 0.3995 | 0.3697 | −0.1235 | 0.048* | |
H25A | 0.6600 | 0.2574 | 0.1624 | 0.049* | |
H25B | 0.5594 | 0.1774 | 0.1432 | 0.049* | |
H25C | 0.5338 | 0.2345 | 0.2534 | 0.049* | |
H26 | 0.5835 | 0.3711 | 0.2749 | 0.026* | |
H2A | 0.5744 | 0.7382 | 0.4319 | 0.045* | |
H2B | 0.4775 | 0.7018 | 0.5136 | 0.045* | |
H3A | 0.7581 | 0.3579 | 0.4764 | 0.047* | |
H3B | 0.7775 | 0.2743 | 0.4849 | 0.047* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N11 | 0.0273 (10) | 0.0282 (12) | 0.0249 (10) | −0.0039 (9) | −0.0048 (8) | −0.0016 (8) |
C12 | 0.0356 (14) | 0.0201 (13) | 0.0300 (13) | −0.0001 (11) | −0.0046 (11) | −0.0035 (10) |
C13 | 0.0290 (13) | 0.0206 (13) | 0.0256 (12) | 0.0004 (10) | −0.0080 (10) | 0.0015 (10) |
C14 | 0.0203 (11) | 0.0223 (13) | 0.0170 (11) | −0.0030 (9) | −0.0010 (9) | 0.0035 (9) |
C15 | 0.0213 (12) | 0.0241 (13) | 0.0218 (12) | 0.0005 (10) | −0.0014 (10) | 0.0001 (9) |
C16 | 0.0222 (12) | 0.0292 (14) | 0.0210 (12) | −0.0009 (10) | −0.0029 (9) | −0.0012 (10) |
C17 | 0.0210 (11) | 0.0220 (13) | 0.0190 (11) | −0.0018 (10) | −0.0011 (9) | 0.0014 (9) |
O1 | 0.0281 (9) | 0.0208 (9) | 0.0257 (8) | 0.0000 (7) | −0.0053 (7) | −0.0021 (7) |
N17 | 0.0266 (10) | 0.0148 (10) | 0.0212 (9) | −0.0003 (8) | −0.0054 (8) | −0.0036 (8) |
N27 | 0.0242 (10) | 0.0215 (10) | 0.0202 (9) | −0.0028 (8) | −0.0039 (8) | −0.0027 (8) |
C27 | 0.0257 (12) | 0.0166 (12) | 0.0219 (11) | −0.0004 (9) | −0.0020 (10) | −0.0003 (9) |
C21 | 0.0204 (11) | 0.0205 (12) | 0.0194 (11) | −0.0028 (9) | −0.0008 (9) | 0.0015 (9) |
C22 | 0.0242 (12) | 0.0177 (12) | 0.0229 (11) | −0.0002 (10) | −0.0016 (9) | −0.0003 (9) |
C23 | 0.0201 (11) | 0.0222 (13) | 0.0204 (11) | −0.0010 (9) | −0.0033 (9) | 0.0054 (9) |
O23 | 0.0264 (8) | 0.0207 (9) | 0.0257 (8) | 0.0052 (7) | −0.0086 (7) | −0.0007 (7) |
C231 | 0.0325 (14) | 0.0221 (13) | 0.0335 (14) | 0.0083 (11) | −0.0100 (11) | −0.0011 (10) |
C24 | 0.0217 (11) | 0.0205 (12) | 0.0194 (11) | −0.0050 (9) | −0.0033 (9) | −0.0016 (9) |
O24 | 0.0267 (8) | 0.0212 (8) | 0.0195 (8) | −0.0042 (7) | −0.0061 (7) | −0.0008 (6) |
C241 | 0.0399 (14) | 0.0328 (14) | 0.0224 (12) | −0.0069 (12) | −0.0029 (11) | −0.0032 (10) |
C25 | 0.0244 (12) | 0.0167 (12) | 0.0244 (12) | −0.0003 (9) | −0.0015 (10) | 0.0016 (9) |
C251 | 0.0348 (14) | 0.0215 (13) | 0.0422 (15) | 0.0076 (11) | −0.0124 (12) | −0.0003 (11) |
O25 | 0.0323 (9) | 0.0174 (9) | 0.0348 (9) | 0.0047 (7) | −0.0124 (7) | −0.0040 (7) |
C26 | 0.0225 (11) | 0.0209 (12) | 0.0212 (11) | −0.0008 (10) | −0.0044 (9) | 0.0037 (9) |
O2 | 0.0320 (9) | 0.0239 (9) | 0.0331 (9) | 0.0023 (7) | −0.0059 (7) | 0.0067 (7) |
O3 | 0.0375 (10) | 0.0173 (9) | 0.0396 (10) | 0.0006 (7) | −0.0099 (8) | 0.0013 (7) |
N11—C12 | 1.333 (3) | C23—C24 | 1.385 (3) |
N11—C16 | 1.338 (3) | O23—C231 | 1.429 (3) |
C12—C13 | 1.379 (3) | C231—H23A | 0.98 |
C12—H12 | 0.95 | C231—H23B | 0.98 |
C13—C14 | 1.387 (3) | C231—H23C | 0.98 |
C13—H13 | 0.95 | C24—O24 | 1.385 (2) |
C14—C15 | 1.391 (3) | C24—C25 | 1.397 (3) |
C14—C17 | 1.502 (3) | O24—C241 | 1.434 (3) |
C15—C16 | 1.372 (3) | C241—H24A | 0.98 |
C15—H15 | 0.95 | C241—H24B | 0.98 |
C16—H16 | 0.95 | C241—H24C | 0.98 |
C17—O1 | 1.228 (3) | C25—O25 | 1.371 (2) |
C17—N17 | 1.359 (3) | C25—C26 | 1.385 (3) |
N17—N27 | 1.388 (2) | C251—O25 | 1.429 (3) |
N17—H17 | 0.88 | C251—H25A | 0.98 |
N27—C27 | 1.281 (3) | C251—H25B | 0.98 |
C27—C21 | 1.464 (3) | C251—H25C | 0.98 |
C27—H27 | 0.95 | C26—H26 | 0.95 |
C21—C22 | 1.393 (3) | O2—H2A | 0.87 |
C21—C26 | 1.398 (3) | O2—H2B | 0.87 |
C22—C23 | 1.393 (3) | O3—H3A | 0.87 |
C22—H22 | 0.95 | O3—H3B | 0.87 |
C23—O23 | 1.367 (2) | ||
C12—N11—C16 | 116.05 (18) | C24—C23—C22 | 119.36 (19) |
N11—C12—C13 | 124.5 (2) | C23—O23—C231 | 117.10 (16) |
N11—C12—H12 | 117.8 | O23—C231—H23A | 109.5 |
C13—C12—H12 | 117.8 | O23—C231—H23B | 109.5 |
C12—C13—C14 | 118.8 (2) | H23A—C231—H23B | 109.5 |
C12—C13—H13 | 120.6 | O23—C231—H23C | 109.5 |
C14—C13—H13 | 120.6 | H23A—C231—H23C | 109.5 |
C13—C14—C15 | 117.26 (19) | H23B—C231—H23C | 109.5 |
C13—C14—C17 | 125.45 (19) | C23—C24—O24 | 120.48 (18) |
C15—C14—C17 | 117.28 (19) | C23—C24—C25 | 120.48 (18) |
C16—C15—C14 | 119.5 (2) | O24—C24—C25 | 118.96 (19) |
C16—C15—H15 | 120.2 | C24—O24—C241 | 113.10 (16) |
C14—C15—H15 | 120.2 | O24—C241—H24A | 109.5 |
N11—C16—C15 | 123.9 (2) | O24—C241—H24B | 109.5 |
N11—C16—H16 | 118.1 | H24A—C241—H24B | 109.5 |
C15—C16—H16 | 118.1 | O24—C241—H24C | 109.5 |
O1—C17—N17 | 123.25 (19) | H24A—C241—H24C | 109.5 |
O1—C17—C14 | 120.79 (18) | H24B—C241—H24C | 109.5 |
N17—C17—C14 | 115.96 (19) | O25—C25—C26 | 125.19 (19) |
C17—N17—N27 | 118.21 (17) | O25—C25—C24 | 114.09 (18) |
C17—N17—H17 | 120.9 | C26—C25—C24 | 120.7 (2) |
N27—N17—H17 | 120.9 | O25—C251—H25A | 109.5 |
C27—N27—N17 | 114.42 (18) | O25—C251—H25B | 109.5 |
N27—C27—C21 | 122.1 (2) | H25A—C251—H25B | 109.5 |
N27—C27—H27 | 119.0 | O25—C251—H25C | 109.5 |
C21—C27—H27 | 119.0 | H25A—C251—H25C | 109.5 |
C22—C21—C26 | 120.95 (19) | H25B—C251—H25C | 109.5 |
C22—C21—C27 | 116.55 (19) | C25—O25—C251 | 117.08 (16) |
C26—C21—C27 | 122.50 (19) | C25—C26—C21 | 118.56 (19) |
C21—C22—C23 | 119.9 (2) | C25—C26—H26 | 120.7 |
C21—C22—H22 | 120.0 | C21—C26—H26 | 120.7 |
C23—C22—H22 | 120.0 | H2A—O2—H2B | 109.6 |
O23—C23—C24 | 116.02 (18) | H3A—O3—H3B | 104.4 |
O23—C23—C22 | 124.62 (19) | ||
C16—N11—C12—C13 | 0.2 (3) | C21—C22—C23—O23 | 178.68 (19) |
N11—C12—C13—C14 | 0.8 (4) | C21—C22—C23—C24 | −0.1 (3) |
C12—C13—C14—C15 | −1.4 (3) | C24—C23—O23—C231 | 175.93 (19) |
C12—C13—C14—C17 | 177.3 (2) | C22—C23—O23—C231 | −2.9 (3) |
C13—C14—C15—C16 | 1.1 (3) | O23—C23—C24—O24 | −1.2 (3) |
C17—C14—C15—C16 | −177.7 (2) | C22—C23—C24—O24 | 177.76 (19) |
C12—N11—C16—C15 | −0.6 (3) | O23—C23—C24—C25 | −177.85 (18) |
C14—C15—C16—N11 | −0.1 (3) | C22—C23—C24—C25 | 1.1 (3) |
C13—C14—C17—O1 | −172.3 (2) | C23—C24—O24—C241 | 81.1 (2) |
C15—C14—C17—O1 | 6.4 (3) | C25—C24—O24—C241 | −102.1 (2) |
C13—C14—C17—N17 | 7.9 (3) | C23—C24—C25—O25 | 178.19 (19) |
C15—C14—C17—N17 | −173.41 (18) | O24—C24—C25—O25 | 1.5 (3) |
O1—C17—N17—N27 | −1.4 (3) | C23—C24—C25—C26 | −0.9 (3) |
C14—C17—N17—N27 | 178.43 (17) | O24—C24—C25—C26 | −177.6 (2) |
C17—N17—N27—C27 | 174.09 (19) | C26—C25—O25—C251 | 3.1 (3) |
N17—N27—C27—C21 | 177.30 (19) | C24—C25—O25—C251 | −175.91 (19) |
N27—C27—C21—C22 | −177.6 (2) | O25—C25—C26—C21 | −179.2 (2) |
N27—C27—C21—C26 | 1.6 (3) | C24—C25—C26—C21 | −0.2 (3) |
C26—C21—C22—C23 | −1.0 (3) | C22—C21—C26—C25 | 1.2 (3) |
C27—C21—C22—C23 | 178.2 (2) | C27—C21—C26—C25 | −177.9 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
N17—H17···O2 | 0.88 | 2.02 | 2.871 (2) | 163 |
O2—H2A···N11i | 0.87 | 1.99 | 2.843 (2) | 166 |
O2—H2B···O3ii | 0.87 | 1.88 | 2.745 (2) | 174 |
O3—H3A···O1 | 0.87 | 2.01 | 2.864 (2) | 166 |
O3—H3B···O24iii | 0.87 | 2.24 | 2.874 (2) | 130 |
O3—H3B···O25iii | 0.87 | 2.33 | 3.157 (2) | 159 |
Symmetry codes: (i) x−1/2, −y+3/2, z−1/2; (ii) −x+1, −y+1, −z+1; (iii) x+1/2, −y+1/2, z+1/2. |
Experimental details
(I) | (II) | (III) | |
Crystal data | |||
Chemical formula | C15H15N3O3·CHCl3 | C16H17N3O4·H2O | C16H17N3O4·2H2O |
Mr | 404.67 | 333.34 | 351.36 |
Crystal system, space group | Monoclinic, P21/n | Monoclinic, P21/c | Monoclinic, P21/n |
Temperature (K) | 120 | 120 | 120 |
a, b, c (Å) | 12.7400 (4), 10.8595 (3), 13.9187 (4) | 10.8081 (6), 10.3597 (3), 14.4270 (7) | 8.9930 (5), 16.2713 (10), 11.6311 (6) |
β (°) | 110.728 (1) | 95.281 (2) | 90.354 (3) |
V (Å3) | 1801.01 (9) | 1608.52 (13) | 1701.92 (17) |
Z | 4 | 4 | 4 |
Radiation type | Mo Kα | Mo Kα | Mo Kα |
µ (mm−1) | 0.53 | 0.10 | 0.11 |
Crystal size (mm) | 0.18 × 0.13 × 0.03 | 0.20 × 0.20 × 0.05 | 0.48 × 0.10 × 0.01 |
Data collection | |||
Diffractometer | Bruker Nonius KappaCCD area-detector diffractometer | Bruker Nonius KappaCCD area-detector diffractometer | Bruker Nonius KappaCCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2003) | Multi-scan (SADABS; Sheldrick, 2003) | Multi-scan (SADABS; Sheldrick, 2003) |
Tmin, Tmax | 0.932, 0.984 | 0.967, 0.995 | 0.966, 0.999 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 20128, 4128, 3388 | 15972, 3686, 2480 | 21442, 3890, 2409 |
Rint | 0.047 | 0.048 | 0.090 |
(sin θ/λ)max (Å−1) | 0.651 | 0.651 | 0.651 |
Refinement | |||
R[F2 > 2σ(F2)], wR(F2), S | 0.041, 0.090, 1.02 | 0.047, 0.133, 1.03 | 0.065, 0.121, 1.02 |
No. of reflections | 4128 | 3686 | 3890 |
No. of parameters | 228 | 220 | 229 |
H-atom treatment | H-atom parameters constrained | H-atom parameters constrained | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.40, −0.60 | 0.21, −0.29 | 0.21, −0.24 |
Computer programs: COLLECT (Nonius, 1999), DENZO (Otwinowski & Minor, 1997) and COLLECT, DENZO and COLLECT, OSCAIL (McArdle, 2003) and SHELXS97 (Sheldrick, 1997), OSCAIL and SHELXL97 (Sheldrick, 1997), PLATON (Spek, 2003), SHELXL97 and PRPKAPPA (Ferguson, 1999).
D—H···A | D—H | H···A | D···A | D—H···A |
N17—H17···N11i | 0.88 | 2.17 | 3.015 (2) | 162 |
C1—H1···O22 | 1.00 | 2.41 | 3.363 (2) | 159 |
C1—H1···O23 | 1.00 | 2.59 | 3.371 (3) | 134 |
C27—H27···N11i | 0.95 | 2.60 | 3.411 (2) | 144 |
Symmetry code: (i) −x+1/2, y−1/2, −z+3/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
N17—H17···N11i | 0.88 | 2.12 | 2.947 (2) | 157 |
O2—H2A···O1 | 0.90 | 2.41 | 3.015 (2) | 125 |
O2—H2A···N27 | 0.90 | 2.32 | 3.206 (2) | 166 |
O2—H2B···O24ii | 0.90 | 1.95 | 2.823 (2) | 162 |
Symmetry codes: (i) −x+1, y+1/2, −z+3/2; (ii) −x, y−1/2, −z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
N17—H17···O2 | 0.88 | 2.02 | 2.871 (2) | 163 |
O2—H2A···N11i | 0.87 | 1.99 | 2.843 (2) | 166 |
O2—H2B···O3ii | 0.87 | 1.88 | 2.745 (2) | 174 |
O3—H3A···O1 | 0.87 | 2.01 | 2.864 (2) | 166 |
O3—H3B···O24iii | 0.87 | 2.24 | 2.874 (2) | 130 |
O3—H3B···O25iii | 0.87 | 2.33 | 3.157 (2) | 159 |
Symmetry codes: (i) x−1/2, −y+3/2, z−1/2; (ii) −x+1, −y+1, −z+1; (iii) x+1/2, −y+1/2, z+1/2. |
Parameter | (I) | (II) | (III) | |
C13-C14-C17-N17 | 27.7 (2) | 18.5 (2) | 7.9 (3) | |
C14-C17-N17-N27 | -176.86 (15) | -177.52 (14) | 178.43 (17) | |
C17-N17-N27-C27 | 175.15 (16) | 176.37 (16) | 174.09 (19) | |
N17-N27-C27-C21 | -178.11 (16) | -178.87 (14) | 177.30 (19) | |
N27-C27-C21-C22 | 172.79 (17) | 159.37 (17) | -177.6 (2) | |
C21-C22-O22 | 120.19 (16) | |||
C23-C22-O22 | 118.71 (16) | |||
C21-C22-O22-C221 | 98.85 (19) | |||
C22-C23-O23 | 115.64 (16) | 124.14 (16) | 124.62 (19) | |
C24-C23-O23 | 125.14 (17) | 115.97 (14) | 116.02 (18) | |
C22-C23-O23-C231 | 179.89 (18) | -12.3 (2) | -2.9 (3) | |
C23-C24-O24 | 120.76 (15) | 120.48 (18) | ||
C25-C24-O24 | 118.85 (15) | 118.96 (19) | ||
C23-C24-O24-C241 | 87.82 (19) | 81.1 (2) | ||
C24-C25-O25 | 115.24 (14) | 114.09 (18) | ||
C26-C25-O25 | 124.59 (15) | 125.19 (19) | ||
C26-C25-O25-C251 | 8.2 (2) | 3.1 (3) |
Acknowledgements
The X-ray data were collected at the EPSRC National Crystallography Service, University of Southampton, England; the authors thank the staff of the Service for all their help and advice. JLW thanks CNPq and FAPERJ for financial support.
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We report here the molecular and supramolecular structures of three methoxy-substituted benzaldehyde isonicotinoylhydrazones, namely 2,3-dimethoxybenzaldehyde isonicotinoylhydrazone which crystallizes as a chloroform monosolvate, (I), and the mono- and dihydrates of 3,4,5-trimethoxybenzaldehyde isonicotinoylhydrazone, (II) and (III), respectively (Figs. 1–3). We have undertaken this work as part of a more general study of isonicotinoylhydrazones (Wardell, de Souza, Ferreira et al., 2005; Wardell, de Souza, Wardell et al., 2005; Wardell et al., 2006; Low et al., 2006). The structure of the dihydrate, (III), has been reported previously (Bhagiratha et al., 2000), determined from diffraction data collected at ambient temperature, but the description of the supramolecular aggregation differs markedly from that deduced here.
In the organic components in each of compounds (I)–(III), the central spacer unit between atoms C14 and C21 (Figs. 1–3) is effectively planar, with an all-trans chain-extended conformation, as shown by the relevant torsion angles (Table 1). The two independent rings are only slightly twisted out of the plane of the central spacer unit, although with no evident pattern in the torsion angles defining the ring orientations. Methoxy atom C231 in (I), and the corresponding atoms C231 and C251 in the two hydrates (II) and (III), are all almost coplanar with the adjacent aryl rings, whereas the C/O/C planes containing atoms C221 in (I) and C241 in (II) and (III) are almost orthogonal to the planes of the adjacent rings. In general, isolated methoxy groups bonded to aryl rings exhibit effective coplanarity with the aryl ring (Seip & Seip, 1973; Ferguson et al., 1996; Gallagher et al., 2001, 2004). Thus, the methoxy groups in compounds (I)–(III), where the C/O/C planes are approximately normal to the planes of the adjacent aryl rings, are anomalous. If the two methoxy groups in compound (I) were both approximately coplanar with the aryl ring, with atoms C221 and C231 maximally distant from one another to minimize close repulsive H···O contacts involving the H atoms of one substituent and the O atom of the other, there would be close repulsive contacts between the H atoms bonded to atoms C221 and C27, hence the orthogonal conformation of the methoxy group at C22. Rather similar considerations govern the conformations adopted by the 4-methoxy groups in each of (II) and (III). As usual, the two exocyclic C—C—O angles for the orthogonal methoxy groups are very similar, whereas these two angles consistently differ by 8–10° for the coplanar methoxy groups. The organic components of the hydrates (II) and (III) show no significant differences, apart from minor differences in conformation (Table 1).
The supramolecular aggregation in compound (I) is extremely simple, even though the structure contains three types of hydrogen bond (Table 2). Atoms N17 and C27 in the hydrazone molecule at (x, y, z) both act as hydrogen-bond donors to pyridyl atom N11 of the hydrazone molecule at (1/2 − x, −1/2 + y, 3/2 − z), so forming a C(7)C(9)[R12(6)] (Bernstein et al., 1995) chain of rings running parallel to the [010] direction and generated by the 21 screw axis along (1/4, y, 3/4) (Fig. 4). The chloroform molecules are pendent from the chain, to which they are weakly linked via a planar three-centre C—H···(O)2 hydrogen bond (Fig. 1, Table 2). Two chains of this type, related to one another by inversion, pass through each unit cell, but there are no direction-specific interactions between the chains, so that the supramolecular structure is strictly one-dimensional.
Within the selected asymmetric unit of compound (II), the water molecule is linked to the hydrazone component via a three-centre O—H···(N,O) hydrogen bond (Fig. 2, Table 3). Two further hydrogen bonds, one each of O—H···O and N—H···N types, link these bimolecular aggregates into sheets. Water atom O2 at (x, y, z) acts as hydrogen-bond donor to atom N27 and methoxy atom O24 at (−x, −1/2 + y, 1/2 − z), so forming a C22(12) chain running parallel to the [010] direction and generated by the 21 screw axis along (0, y, 1/4). In addition, amino atom N17 at (x, y, z) acts as hydrogen-bond donor to pyridyl atom N11 at (1 − x, 1/2 + y, 3/2 − z), so forming a second motif running parallel to the [010] direction, this time of C(7) type and generated by the 21 screw axis along (1/2, y, 3/4). The combination of these two chain motifs generates a sheet of R21(5) and R66(35) rings parallel to (101) (Fig. 5). Two inversion-related sheets pass through each unit cell, but there are no direction-specific interactions between adjacent sheets, so that the supramolecular structure is strictly two-dimensional.
The asymmetric unit of the dihydrate compound, (III), has been selected such that the components are joined by one O—H···O hydrogen bond and one N—H···O hydrogen bond (Fig. 3, Table 4). These three-component aggregates are linked by two-centre O—H···N and O—H···O hydrogen bonds and by a three-centre O—H···(O)2 hydrogen bond to form a three-dimensional framework, whose formation is readily analysed in terms of simple sub-structures of low dimensionality. In the first such sub-structure, water atom O2 at (x, y, z) acts as hydrogen-bond donor, via atom H2A, to pyridyl atom N11 at (−1/2 + x, 1/2 − y, −1/2 + z), so forming a C22(9) chain running parallel to the [101] direction and generated by the n-glide plane at y = 3/4. In the second sub-structure, water atom O3 at (x, y, z) acts as hydrogen-bond donor, via atom H3B, to methoxy atoms O24 and O25, both at (1/2 + x, 1/2 − y, 1/2 + z), thus forming a C22(12)C22(13)[R21(5)] chain of rings, again parallel to the [101] direction but now generated by the n-glide plane at y = 1/4. The combination of these two sub-structures then generates a sheet parallel to (101) (Fig. 6).
Two sheets of this type, related to one another by inversion, pass through each unit cell, and adjacent sheets are linked by the final sub-structural motif. Water atom O2 at (x, y, z) acts as hydrogen-bond donor, via atom H2B, to water atom O3 at (1 − x, 1 − y, 1 − z), so generating by inversion an R66(16) motif (Fig. 7). Propagation of this motif by the space group links each (101) sheet to the two neighbouring sheets, so linking all of the molecular components into a single three-dimensional framework of considerable complexity.
The structure deduced here for dihydrate (III) differs markedly from that recently reported for this compound at ambient temperature, where the structure was described in terms of sheets parallel to (010) formed by O—H···O and O—H···N hydrogen bonds (Bhagiratha et al., 2000). Although the unit-cell dimensions, space group and atom coordinates reported earlier show that there has been no phase change between ambient temperature and 120 K, we find no combination of any sub-set of the hydrogen bonds present which can generate a sheet parallel to (010). In any event, as noted above, the supramolecular structure of (III) is three-dimensional, not two-dimensional.
It is of interest at this point briefly to compare the structures of compounds (I) and the isomeric solvent-free hydrazone (IV), which was crystallized from acetonitrile (Chen et al., 1997). In both methoxy groups of compound (IV), the methyl C atoms are essentially coplanar with the adjacent aryl ring. The supramolecular structure of (IV) was described in terms of simple chains formed by a single N—H···O hydrogen bond (Chen et al., 1997). In fact, these chains, which are of C(4) type, are linked into sheets by a C—H···π(arene) hydrogen bond, although this interaction was not mentioned in the original report. The parameters are H1···Cgi = 2.88 Å, C1···Cgi = 3.675 (3) Å and C1—H1···Cgi = 144°, where the original atom numbers have been used and Cg represents the centroid of the aryl ring [symmetry code: (i) 1 + x, y, z]. The resulting supramolecular structure of (IV) then takes the form of sheets parallel to (010) (Fig. 8).