organic compounds
Form II of adipic acid–nicotinohydrazide (1/2)
aMolecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg, PO Wits 2050, South Africa, bFaculty of Science, NYU Abu Dhabi, PO Box 129188, Abu Dhabi, United Arab Emirates, and cInstitute of Mineralogy and Petrography, University of Innsbruck, Innsbruck 6020, Austria
*Correspondence e-mail: andreas.lemmerer@wits.ac.za
The 6H7N3O·C6H10O4, is a second polymorph, designated form II, of the formed between the two molecules [Lemmerer et al. (2011). CrystEngComm, 13, 55–59]. The comprises one molecule of nicotinic acid hydrazide, and one half-molecule of adipic acid (the entire molecule is completed by the application of a centre of inversion). In the crystal, molecules assemble into a three-dimensional network of hydrogen bonds, formed by three N—H⋯O hydrogen bonds and one O—H⋯N hydrogen bond. The O—H⋯N hydrogen bond formed between the carboxyl group and the pyridine ring is supported by a C—H⋯O hydrogen bond.
of the title 2CRelated literature
For the first polymorph, see: Lemmerer et al. (2011). For experimental techniques, see: Friščić et al. (2009); Skovsgaard & Bond (2009); Karki et al. (2009). For hydrogen-bonding motifs, see: Bernstein et al. (1995).
Experimental
Crystal data
|
Refinement
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Data collection: CrysAlis PRO (Oxford Diffraction, 2006); cell CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 1999); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON (Spek, 2009).
Supporting information
10.1107/S1600536811054043/tk5035sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811054043/tk5035Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536811054043/tk5035Isup3.mol
Supporting information file. DOI: 10.1107/S1600536811054043/tk5035Isup4.cml
A stoichiometric amount in the ratio of 2:1 of nicotinic acid hydrazide to adipic acid was ground together in a mortar with a pestle under the drop-wise addition of methanol over 20 minutes. The resulting powder was then dissolved in 10 ml of AR-grade methanol, and the solution slowly left to evaporate to afford colourless block-like crystals after one week.
The C-bound H atoms were geometrically placed (C—H bond lengths of 0.95 (aromatic CH) and 0.99 (methylene CH2) Å) and refined as riding with Uiso(H) = 1.2Ueq(C). The N-bound and O-bound H atoms were located in the difference map and coordinates refined freely together with their isotropic displacement parameters.
Data collection: CrysAlis PRO (Oxford Diffraction, 2006); cell
CrysAlis PRO (Oxford Diffraction, 2006); data reduction: CrysAlis PRO (Oxford Diffraction, 2006); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 1999); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON (Spek, 2009).Fig. 1. The asymmetric unit of (I) extended to show the entire dicarboxylic acid and showing the atomic numbering scheme. Displacement ellipsoids are shown at the 50% probability level. Symmetry code: (i): -x, -y, -z. | |
Fig. 2. Hydrogen bonding diagram of (I), Form II, showing the various ring shaped hydrogen bonding motifs. Intermolecular N—H···N, O—H···N and C—H···O hydrogen bonds are shown as dashed red lines. |
2C6H7N3O·C6H10O4 | F(000) = 444 |
Mr = 420.43 | Dx = 1.403 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 3572 reflections |
a = 15.9747 (4) Å | θ = 3.1–28.5° |
b = 7.3309 (2) Å | µ = 0.11 mm−1 |
c = 8.7451 (2) Å | T = 173 K |
β = 103.729 (3)° | Block, colourless |
V = 994.87 (4) Å3 | 0.32 × 0.28 × 0.04 mm |
Z = 2 |
Oxford Diffraction Xcalibur diffractometer with a Ruby (Gemini ultra Mo) detector | 1487 reflections with I > 2σ(I) |
ω scans | Rint = 0.020 |
Absorption correction: multi-scan (CrysAlis PRO; Oxford Diffraction, 2006) | θmax = 25.5°, θmin = 3.1° |
Tmin = 0.92, Tmax = 0.98 | h = −13→19 |
6207 measured reflections | k = −8→8 |
1845 independent reflections | l = −10→9 |
Refinement on F2 | H atoms treated by a mixture of independent and constrained refinement |
Least-squares matrix: full | w = 1/[σ2(Fo2) + (0.048P)2] where P = (Fo2 + 2Fc2)/3 |
R[F2 > 2σ(F2)] = 0.029 | (Δ/σ)max < 0.001 |
wR(F2) = 0.077 | Δρmax = 0.18 e Å−3 |
S = 1.02 | Δρmin = −0.14 e Å−3 |
1845 reflections | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
153 parameters | Extinction coefficient: 0.0095 (18) |
0 restraints |
2C6H7N3O·C6H10O4 | V = 994.87 (4) Å3 |
Mr = 420.43 | Z = 2 |
Monoclinic, P21/c | Mo Kα radiation |
a = 15.9747 (4) Å | µ = 0.11 mm−1 |
b = 7.3309 (2) Å | T = 173 K |
c = 8.7451 (2) Å | 0.32 × 0.28 × 0.04 mm |
β = 103.729 (3)° |
Oxford Diffraction Xcalibur diffractometer with a Ruby (Gemini ultra Mo) detector | 1845 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Oxford Diffraction, 2006) | 1487 reflections with I > 2σ(I) |
Tmin = 0.92, Tmax = 0.98 | Rint = 0.020 |
6207 measured reflections |
R[F2 > 2σ(F2)] = 0.029 | 0 restraints |
wR(F2) = 0.077 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.02 | Δρmax = 0.18 e Å−3 |
1845 reflections | Δρmin = −0.14 e Å−3 |
153 parameters |
Experimental. Absorption corrections were made using the program Crysalis Empirical absorption correction using spherical harmonics, implemented in SCALE3 ABSPACK scaling algorithm in CrysAlisPro. |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
x | y | z | Uiso*/Ueq | ||
C1 | 0.16016 (7) | 0.37907 (15) | 0.35826 (13) | 0.0237 (3) | |
C2 | 0.22411 (7) | 0.44813 (15) | 0.47997 (13) | 0.0248 (3) | |
H2A | 0.2294 | 0.5767 | 0.4922 | 0.03* | |
C3 | 0.27134 (8) | 0.16066 (15) | 0.56223 (15) | 0.0296 (3) | |
H3 | 0.3105 | 0.0841 | 0.6326 | 0.036* | |
C4 | 0.20920 (8) | 0.08110 (15) | 0.44526 (15) | 0.0317 (3) | |
H4 | 0.2056 | −0.0479 | 0.4355 | 0.038* | |
C5 | 0.15231 (8) | 0.19064 (16) | 0.34265 (14) | 0.0291 (3) | |
H5 | 0.1082 | 0.1384 | 0.2622 | 0.035* | |
C6 | 0.09817 (8) | 0.49832 (15) | 0.24735 (13) | 0.0243 (3) | |
N1 | 0.13026 (7) | 0.65323 (12) | 0.20370 (11) | 0.0259 (2) | |
H1 | 0.1859 (9) | 0.6738 (17) | 0.2300 (15) | 0.030 (3)* | |
N2 | 0.27881 (6) | 0.34156 (13) | 0.58100 (11) | 0.0276 (3) | |
N3 | 0.07997 (7) | 0.77311 (15) | 0.09121 (13) | 0.0303 (3) | |
H3A | 0.0389 (9) | 0.8250 (17) | 0.1382 (16) | 0.036 (4)* | |
H3B | 0.0508 (9) | 0.7022 (19) | 0.0145 (18) | 0.042 (4)* | |
O1 | 0.02225 (5) | 0.45309 (11) | 0.19861 (10) | 0.0327 (2) | |
C7 | 0.38377 (7) | 0.67377 (15) | 0.82289 (13) | 0.0259 (3) | |
C8 | 0.45756 (8) | 0.75709 (16) | 0.94010 (16) | 0.0352 (3) | |
H8A | 0.5119 | 0.7085 | 0.9206 | 0.042* | |
H8B | 0.4543 | 0.7172 | 1.0467 | 0.042* | |
C9 | 0.46178 (7) | 0.96301 (15) | 0.93861 (14) | 0.0281 (3) | |
H9A | 0.4079 | 1.0133 | 0.9588 | 0.034* | |
H9B | 0.466 | 1.0045 | 0.833 | 0.034* | |
O2 | 0.39428 (6) | 0.49783 (11) | 0.80455 (11) | 0.0341 (2) | |
O3 | 0.32068 (5) | 0.75783 (10) | 0.75195 (11) | 0.0353 (2) | |
H2 | 0.3478 (12) | 0.449 (2) | 0.727 (2) | 0.069 (5)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0214 (6) | 0.0264 (6) | 0.0251 (6) | −0.0031 (5) | 0.0090 (5) | −0.0026 (5) |
C2 | 0.0240 (6) | 0.0226 (6) | 0.0279 (7) | −0.0018 (5) | 0.0062 (5) | −0.0018 (5) |
C3 | 0.0293 (7) | 0.0270 (7) | 0.0342 (7) | 0.0028 (5) | 0.0105 (6) | 0.0043 (5) |
C4 | 0.0374 (8) | 0.0216 (6) | 0.0387 (7) | −0.0023 (5) | 0.0144 (6) | −0.0018 (5) |
C5 | 0.0280 (7) | 0.0281 (6) | 0.0317 (7) | −0.0065 (5) | 0.0083 (5) | −0.0057 (5) |
C6 | 0.0221 (7) | 0.0279 (6) | 0.0231 (6) | −0.0031 (5) | 0.0055 (5) | −0.0062 (4) |
N1 | 0.0207 (6) | 0.0276 (6) | 0.0280 (6) | −0.0013 (4) | 0.0030 (5) | 0.0001 (4) |
N2 | 0.0245 (6) | 0.0274 (6) | 0.0301 (6) | −0.0012 (4) | 0.0048 (4) | 0.0009 (4) |
N3 | 0.0284 (6) | 0.0319 (6) | 0.0290 (6) | 0.0001 (5) | 0.0038 (5) | 0.0023 (5) |
O1 | 0.0232 (5) | 0.0372 (5) | 0.0346 (5) | −0.0062 (4) | 0.0010 (4) | 0.0019 (4) |
C7 | 0.0228 (7) | 0.0276 (7) | 0.0266 (6) | 0.0012 (5) | 0.0042 (5) | 0.0027 (5) |
C8 | 0.0291 (7) | 0.0348 (8) | 0.0350 (7) | 0.0021 (5) | −0.0058 (6) | −0.0030 (5) |
C9 | 0.0206 (7) | 0.0321 (7) | 0.0292 (7) | 0.0011 (5) | 0.0014 (5) | −0.0023 (5) |
O2 | 0.0296 (5) | 0.0276 (5) | 0.0382 (6) | 0.0027 (4) | −0.0059 (4) | −0.0015 (4) |
O3 | 0.0244 (5) | 0.0306 (5) | 0.0444 (5) | 0.0030 (4) | −0.0047 (4) | 0.0000 (4) |
C1—C2 | 1.3845 (16) | N1—H1 | 0.877 (14) |
C1—C5 | 1.3908 (15) | N3—H3A | 0.934 (14) |
C1—C6 | 1.4932 (16) | N3—H3B | 0.888 (15) |
C2—N2 | 1.3371 (15) | C7—O3 | 1.2180 (13) |
C2—H2A | 0.95 | C7—O2 | 1.3154 (13) |
C3—N2 | 1.3382 (15) | C7—C8 | 1.4965 (17) |
C3—C4 | 1.3747 (18) | C8—C9 | 1.5113 (16) |
C3—H3 | 0.95 | C8—H8A | 0.99 |
C4—C5 | 1.3744 (17) | C8—H8B | 0.99 |
C4—H4 | 0.95 | C9—C9i | 1.522 (2) |
C5—H5 | 0.95 | C9—H9A | 0.99 |
C6—O1 | 1.2317 (14) | C9—H9B | 0.99 |
C6—N1 | 1.3383 (15) | O2—H2 | 0.950 (19) |
N1—N3 | 1.4178 (14) | ||
C2—C1—C5 | 118.13 (10) | C2—N2—C3 | 118.21 (10) |
C2—C1—C6 | 122.68 (10) | N1—N3—H3A | 106.8 (8) |
C5—C1—C6 | 119.16 (10) | N1—N3—H3B | 105.7 (9) |
N2—C2—C1 | 122.79 (10) | H3A—N3—H3B | 105.8 (12) |
N2—C2—H2A | 118.6 | O3—C7—O2 | 123.24 (11) |
C1—C2—H2A | 118.6 | O3—C7—C8 | 124.36 (10) |
N2—C3—C4 | 122.64 (11) | O2—C7—C8 | 112.40 (10) |
N2—C3—H3 | 118.7 | C7—C8—C9 | 115.55 (10) |
C4—C3—H3 | 118.7 | C7—C8—H8A | 108.4 |
C5—C4—C3 | 119.13 (11) | C9—C8—H8A | 108.4 |
C5—C4—H4 | 120.4 | C7—C8—H8B | 108.4 |
C3—C4—H4 | 120.4 | C9—C8—H8B | 108.4 |
C4—C5—C1 | 119.08 (11) | H8A—C8—H8B | 107.5 |
C4—C5—H5 | 120.5 | C8—C9—C9i | 112.33 (12) |
C1—C5—H5 | 120.5 | C8—C9—H9A | 109.1 |
O1—C6—N1 | 122.82 (11) | C9i—C9—H9A | 109.1 |
O1—C6—C1 | 120.92 (10) | C8—C9—H9B | 109.1 |
N1—C6—C1 | 116.25 (10) | C9i—C9—H9B | 109.1 |
C6—N1—N3 | 122.12 (10) | H9A—C9—H9B | 107.9 |
C6—N1—H1 | 120.3 (8) | C7—O2—H2 | 110.9 (10) |
N3—N1—H1 | 116.6 (8) | ||
C5—C1—C2—N2 | 0.84 (16) | C5—C1—C6—N1 | −143.68 (10) |
C6—C1—C2—N2 | 178.88 (10) | O1—C6—N1—N3 | −3.28 (17) |
N2—C3—C4—C5 | 0.17 (17) | C1—C6—N1—N3 | 175.83 (10) |
C3—C4—C5—C1 | 1.15 (17) | C1—C2—N2—C3 | 0.45 (15) |
C2—C1—C5—C4 | −1.61 (15) | C4—C3—N2—C2 | −0.97 (15) |
C6—C1—C5—C4 | −179.73 (10) | O3—C7—C8—C9 | −14.84 (18) |
C2—C1—C6—O1 | −142.57 (11) | O2—C7—C8—C9 | 165.28 (10) |
C5—C1—C6—O1 | 35.46 (15) | C7—C8—C9—C9i | 179.74 (12) |
C2—C1—C6—N1 | 38.30 (15) |
Symmetry code: (i) −x+1, −y+2, −z+2. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O3ii | 0.877 (14) | 2.174 (15) | 3.0409 (14) | 169.7 (11) |
N3—H3A···O1iii | 0.934 (14) | 2.129 (14) | 3.0349 (14) | 163.0 (12) |
N3—H3B···O1iv | 0.888 (15) | 2.258 (16) | 3.1426 (14) | 173.7 (13) |
O2—H2···N2 | 0.950 (19) | 1.671 (19) | 2.6126 (13) | 170.3 (16) |
C2—H2A···O3 | 0.95 | 2.73 | 3.3838 (14) | 126 |
Symmetry codes: (ii) x, −y+3/2, z−1/2; (iii) −x, y+1/2, −z+1/2; (iv) −x, −y+1, −z. |
Experimental details
Crystal data | |
Chemical formula | 2C6H7N3O·C6H10O4 |
Mr | 420.43 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 173 |
a, b, c (Å) | 15.9747 (4), 7.3309 (2), 8.7451 (2) |
β (°) | 103.729 (3) |
V (Å3) | 994.87 (4) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.11 |
Crystal size (mm) | 0.32 × 0.28 × 0.04 |
Data collection | |
Diffractometer | Oxford Diffraction Xcalibur diffractometer with a Ruby (Gemini ultra Mo) detector |
Absorption correction | Multi-scan (CrysAlis PRO; Oxford Diffraction, 2006) |
Tmin, Tmax | 0.92, 0.98 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6207, 1845, 1487 |
Rint | 0.020 |
(sin θ/λ)max (Å−1) | 0.606 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.029, 0.077, 1.02 |
No. of reflections | 1845 |
No. of parameters | 153 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.18, −0.14 |
Computer programs: CrysAlis PRO (Oxford Diffraction, 2006), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 1999), WinGX (Farrugia, 1999) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1···O3i | 0.877 (14) | 2.174 (15) | 3.0409 (14) | 169.7 (11) |
N3—H3A···O1ii | 0.934 (14) | 2.129 (14) | 3.0349 (14) | 163.0 (12) |
N3—H3B···O1iii | 0.888 (15) | 2.258 (16) | 3.1426 (14) | 173.7 (13) |
O2—H2···N2 | 0.950 (19) | 1.671 (19) | 2.6126 (13) | 170.3 (16) |
C2—H2A···O3 | 0.95 | 2.73 | 3.3838 (14) | 126.2 |
Symmetry codes: (i) x, −y+3/2, z−1/2; (ii) −x, y+1/2, −z+1/2; (iii) −x, −y+1, −z. |
Acknowledgements
This work was supported in part by grant No. 2004118 from the United States–Israel Binational Science Foundation (Jerusalem). AL thanks the South African National Research Foundation for a postdoctoral scholarship (SFP2007070400002) and the Oppenheimer Memorial Trust for financial support, and the Molecular Sciences Institute for infrastucture.
References
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Form I of the title compound was obtained by solution crystallization, where 1 equivalent of adipic acid was dissolved with two equivalents of niazid in methanol, and then the solution left to slowly evaporate over a few days (Lemmerer et al., 2011). The ratio of the two starting materials was determined by the two expected primary hydrogen bond interactions, namely the two carboxylic acids hydrogen bonding to the single pyridine of two niazid molecules. Form II was obtained by first grinding the two starting materials in the same stoichiometric ratio as form I for 20 minutes, followed by conventional solution crystallization by dissolving the ground powder in methanol. Crystals were obtained after a few days from the methanol solution. Obtaining polymorphs by either grinding or solution crystallization is a focus of recent research (Friščić et al., 2009; Skovsgaard & Bond, 2009; Karki et al., 2009).
The crystallographic asymmetric unit of the resulting crystal structure of form II reflects this stoichiometry, containing one niazid molecule in a general position and one half adipic acid molecule on a special position (Fig. 1). The two molecules lie approximately co-planar. The expected heterosynthon is formed between two niazid and one adipic acid molecule lying on a crystallographic center of symmetry (which requires the pyridine ring and carboxylic acid to be co-planar). The heterosynthon between the dicarboxylic acid molecule and the pyridine ring is formed by a O—H···N hydrogen bond, as well as a C—H···O hydrogen bond, to form a R22(7) ring (Bernstein et al., 1995). The niazid molecules are connected by a centrosymmetric R22(10) ring using N—H···O hydrogen bonds from one of the amine H atoms. Adjacent dimers are joined by a N—H···O bond using the second amine H atom, which together with the C—H···O hydrogen bond and the N—H···O hydrogen bond from the amide H forms a R24(13) ring (Fig. 2). Hence, all four H bond donors are used to form a 3-D network. In form I, the same R22(7) ring is observed but the amide H atom forms a C(4) chain to form a 2-D sheet, which is then connected into a 3-D network by the amine H atoms hydrogen bonding to adjacent sheets (Lemmerer et al., 2011).