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In the title compound, [Sr(C7H8N5O4)2(H2O)5]·H2O, one of the anionic (C7H8N5O4) ligands acts as a simple monodentate ligand coordinated via a carboxyl O atom, while the other acts as a bridging ligand between pairs of Sr atoms, utilizing one carboxyl O and the nitroso O atom, so generating a one-dimensional coordination polymer. Five water mol­ecules are coordinated to Sr, resulting in eight-coordination in the form of a distorted square antiprism, while the sixth water mol­ecule is hydrogen bonded to a coordinated water. The coordination polymer chains are reinforced by O—H...N and O—H...O hydrogen bonds and are linked into a three-dimensional framework by an extensive series of N—H...O and O—H...O hydrogen bonds.

Supporting information

cif

Crystallographic Information File (CIF) https://doi.org/10.1107/S0108270101017887/fr1349sup1.cif
Contains datablocks global, I

hkl

Structure factor file (CIF format) https://doi.org/10.1107/S0108270101017887/fr1349Isup2.hkl
Contains datablock I

CCDC reference: 1304851

Comment top

We have recently described and discussed the structures of a number of hydrated metal salts of the anions N-(6-amino-3,4-dihydro-3-methyl-5-nitroso-4-oxopyrimidin-2-yl)glycinate, (L1)- and N-(6-amino-3,4-dihydro-3-methyl- 5-nitroso-4-oxopyrimidin-2-yl)glycylglycinate, (L2)- (Arranz Mascarós et al., 1999, 2000; Low, Arranz et al., 2001a,b; Low, Moreno Sánchez et al., 2001). The simpler ligand (L1)- can form simple hydrated salts [M(H2O)6](L1)2, with no coordination of (L1)- to the metal cation, as when M2+ = Mg2+ or Zn2+ (Arranz Mascarós et al., 1999, 2000); finite molecular aggregates [Li(L1)(H2O)3] and [Mn(L1)2(H2O)4]·6H2O are formed with Li+ and Mn2+, where the molecular aggregates are linked into three-dimensional frameworks by extensive hydrogen bonding (Low, Moreno Sánchez et al., 2001); and with Na+ and K+, organic-inorganic hybrid sheets are formed, consisting of cations and anions only, which are then linked into three-dimensional frameworks by hydrogen bonds (Low, Moreno Sánchez et al., 2001). The hydrated K+ salt of (L2)- takes the form of a three-dimensional coordination polymer, in whose construction the water molecules play no direct role (Low, Arranz et al., 2001b), while in [Ca(L2)2(H2O)3], there are one-dimensional coordination polymer chains built from cations and anions only, linked by hydrogen bonds into a continuous framework (Low, Arranz et al., 2001a). Continuing with our structural study of the metal salts formed by (L1)-, we have now studied the hydrated Sr2+ salt.

Although the composition of the Sr2+ derivative (I) is identical to that of the Mg2+ analogue, M(L1)2·6H2O, the constitution is entirely different. In particular, both anions in (I) are directly coordinated in monodentate fashion to the Sr via a carboxylate O, [Sr(L1)2(H2O)5]·H2O, whereas in the Mg salt there is no coordination of the anions to the cation, thus [Mg(H2O)6](L1)2; one of the anions in (I) is also coordinated, via nitroso O25, to another Sr at the symmetry position (1 - x, 0.5 + y, 0.5 - z); the Sr coordination number is eight, as opposed to six in the Mg salt, but only five of the water molecules are directly bonded to Sr, while the sixth is hydrogen bonded to one of the coordinated water molecules (Fig. 1).

The range of Sr—O distances, 2.501 (2) - 2.751 (2) Å, has an overall mean value of 2.618 (2) Å. However, within this range it is possible to distinguish three types of Sr—O interaction: the bonds to carboxylate O have mean value 2.555 (2) Å, those to water O have mean value 2.616 (2) Å, while the unique bond to nitrosyl O has length 2.751 (2) Å. This ordering of the different types is consistent with the variations observed in the hydrated Na+ and K+ salts of (L1)- (Low, Moreno Sánchez et al., 2001). In [Ca(L2)2(H2O)3], the mean Ca—O distance is 2.420 (4) Å, if all seven ligating O are included, or 2.377 (4) Å if the outlier value for one weakly bound O is omitted. The difference between the mean Sr—O distance in (I) and the mean Ca—O distances in [Ca(L2)2(H2O)3] are ca 0.20 Å if Ca is regarded as seven-coordinate and ca 0.24 Å if Ca is regarded as six coordinate: these differences precisely reflect the differences between the corresponding ionic radii as tabulated by Shannon & Prewitt (1970): Ca2+ (seven coordinate) 1.07 Å, Ca2+ (six coordinate) 1.00 Å, and Sr2+ (eight coordinate) 1.25 Å. The geometry of the SrO8 polyhedron takes the form of a distorted square antiprism, typical of this coordination number.

The effect of the bridging action of one of the anions in (I) is the generation of a coordination polymer chain running parallel to the [010] direction, and generated by the 21 screw axis along (1/2, y, 1/4) (Fig. 2): a second, antiparallel chain is generated by the 21 axis along (1/2, -y, 3/4). It is striking that the formation of the coordination polymer involves only one of the two independent anionic ligands: in the one dimensional coordination polymer formed by Ca2+ and the related anion (L2)- (Low, Arranz et al., 2001a), the polymer chains lie across twofold rotation axes so that both anionic ligands participate in the chain formation. The formation of the one-dimensional chain polymers [Sr(L1)2]n and [Ca(L2)2]n may be contrasted with the formation of organic-inorganic hybrid sheets in the hydrated Na and K salts of (L1)-, in which the nitroso groups act as η1 and η2 ligands to Na and K respectively (Low, Moreno Sánchez et al., 2001).

As in [Ca(L2)2]n, the coordination polymer chains in [Sr(L1)2]n are linked into a single three-dimensional framework by an extensive series of hydrogen bonds. In addition to the intramolecular N—H···O hydrogen bonds as normally found in the anion (Low, Moreno Sánchez et al., 2001). and the O5—H51C···O6 hydrogen bond to the sixth water molecule within the asymmetric unit, there are a total of sixteen independent hydrogen bonds linking the neutral molecular aggregates; some of these reinforce the polymer chains and some link adjacent chains. There are two strictly planar three-centre O—H····O/N systems in which a water O—H moiety acts as the hydrogen bond donor and the ortho-substituent atoms On4 and Nn5 (n = 1 or 2) act as the pair of acceptors (Table 2). In addition there are twelve two-centre hydrogen bonds linking the molecular units, nine of O—H···O type and three of N—H···O type.

Water O1 acts as hydrogen-bond donor, via H11C, to O222iv [symmetry operators are as defined in Table 2], and water O3 acts as donor, via H31C and H31D to O221iv and O4iv respectively: these three translational hydrogen bonds all reinforce the coordination polymer chain along [010]. Similarly water O2 acts as donor, via H21C, to both O24v and N25v in a three-centre hydrogen bond, which again reinforces the [010] chain by following the 21 axis along (1/2, y, 1/4).

To analyse the linking of the coordination polymer chains it is not, in fact, necessary to consider all of the inter-aggregate hydrogen bonds. Just three of the remaining hydrogen bonds, two of N—H···O type and one of the O—H···O hydrogen bonds suffice to demonstrate the three-dimensional framework structure. Amino N16 in the type 1 anion (linked to Sr via O121) acts as hydrogen bond donor, via H16A, to amido O14i, so producing a C(6) zigzag chain running parallel to [001] and generated by the glide plane at y = 0.25: in an entirely similar manner, N26 in the type 2 anion (linked to Sr via O221)acts as hydrogen-bond donor, via H26A, to O24iii, so producing a second C(6) chain parallel to [001], this time generated by the glide plane at y = -0.25. The combination and propagation, of these two simple chain motifs generates a deeply puckered sheet parallel to (100) in the form of a (4,4) net (Batten & Robson, 1998) built from a single type of R44(48) ring (Fig. 3). Two sheets of this type run through each unit cell and they are linked by the coordination polymer chain into bilayers comprising cations and anions. There are, of course, water molecules present which add considerable complexity to the overall hydrogen bonding: nonetheless it is possible to identify both one- and two-dimensional sub-structures (Figs. 2 and 3) built from the ionic components only.

The linking of the (100) bilayers into a continuous framework is most simply envisaged in terms of the formation of a [100] chain motif involving the ionic components together with just one of the water molecules, that containing O4. The cation-anion aggregates at (x, y, z) and (1 - x, -y, 1 - z) are linked by that at (x, 0.5 - y, 0.5 + z): N16 at (x, y, z) acts as hydrogen-bond donor to O14 at (x, 0.5 - y, 0.5 + z) (cf. Fig. 3), while O25 at (1 - x, -y, 1 - z) is coordinated to the Sr at (x, 0.5 - y, 0.5 + z) (cf. Fig. 3). At the same time the aggregates at (1 - x, -y, 1 - z) and (1 + x, y, z) are linked by the O4 water molecule (Table 2): O4 at (1 + x, y, z), which is coordinated to the Sr at (1 + x, y, z) acts as hydrogen-bond donor, via H41C, to O15 at (1 - x, -y, 1 - z), and O4 at (1 - x, -y, 1 - z) similarly acts as donor to O15 at (1 + x, y, z), so generating a centrosymmetric R22(26) ring. In this way the ionic aggregates at (x, y, z) and (1 + x, y, z) are linked via a C22(28)[R22(26)] chain of rings, and hence all of the (100) bilayers are linked into a continuous framework.

Not only do the two anionic ligands in (I) exhibit different modes of coordination to the Sr, but they adopt significantly different conformations (Table 1). In the type 1 anion, the torsional angles along the sequence of bonds from Sr1 to N11 can be classified as ac, ap, ap, sp (where ap denotes antiperiplanar and so on), while the corresponding sequence of torsional angles in the type 2 anions is sp, ap, ac, sp (cf. Fig. 1).

Within the anionic ligands, the pattern of bond distances reproduces the pattern observed earlier, both in salts of (L1)- (Low, Moreno Sánchez et al., 2001) and in the neutral HL1 (Low et al., 2000), and point to the delocalized form (B) as more important than the classically localized form (A). We note in particular that the values of Δ [Δ ={d(C—N)-d(N—O)}] for the nitroso groups in the two independent anions are 0.060 (4) Å and 0.053 (4) Å, comfortably within the range previously observed in other metal salts of (L1)-, consistent with (B). In this connection it is of interest to note that the O4—H41C···O15i [i = (-x, -y, 1 - z)] hydrogen bond having the uncoordinated nitroso O as acceptor has very short H···O and O···O distances (Table 2), characteristic of O—H···O hydrogen bonds having anionic rather than neutral O as acceptor and thus entirely consistent with the dominance of the polarized form (B). In the other anion, nitroso O25 does not act as an acceptor of intermolecular hydrogen bonds as it is coordinated to the Sr.

Experimental top

Equimolar quantities of strontium chloride hexahydrate and of (NH4)(L1) were separately dissolved in water. When the solutions were mixed a pink crystalline precipitate of (I) was produced. Analysis, found C 26.0, H 4.3, N 21.6%; C14H28N10O14Sr requires C 25.9, H 4.4, N 21.6%. Crystals suitable for single-crystal X-ray diffraction were selected directly from the analytical sample.

Refinement top

H atoms were treated as riding atoms with C—H 0.98 Å (CH3) or 0.99 Å (CH2), and N—H 0.88 Å; water molecules were handled via DFIX followed by AFIX. The barium analogue appears to be isomorphous, with a = 24.8881 (8), b = 6.8332 (2), c = 14.6302 (3) Å, β = 93.5292 (9)°, V = 2483.27 (12) Å3.

Computing details top

Data collection: Kappa-CCD server software (Nonius, 1997); cell refinement: DENZO-SMN (Otwinowski & Minor, 1997); data reduction: DENZO-SMN (Otwinowski & Minor, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: PLATON (Spek, 2001); software used to prepare material for publication: SHELXL97 (Sheldrick, 1997) and PRPKAPPA (Ferguson, 1999).

Figures top
[Figure 1] Fig. 1. The asymmetric unit of (I) showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability level.
[Figure 2] Fig. 2. Part of the crystal structure of (I) showing formation of a coordination polymer chain along [010]. For the sake of clarity, the water molecules and the H atoms bonded to C are omitted. The atoms marked with a star (*), hash (#) or dollar sign ($) are at the symmetry positions (1 - x, 0.5 + y, 0.5 - z), (x, 1 + y, z) and (1 - x, 1.5 + y, 0.5 - z) respectively.
[Figure 3] Fig. 3. Stereoview of part of the crystal structure of (I) showing formation of a hydrogen-bonded (100) sheet of R44(48) rings built from the ionic components only. For the sake of clarity, the water molecules and the H atoms bonded to C are omitted.
catena-Poly[penta-aquabis{N-(6-amino-3,4-dihydro-3-methyl-5-nitroso- 4-oxopyrimidin-2-yl)glycinate}strontium monohydrate] top
Crystal data top
C14H26N10O13Sr·H2OF(000) = 1328
Mr = 648.08Dx = 1.779 Mg m3
Monoclinic, P21/cMo Kα radiation, λ = 0.71073 Å
a = 25.0078 (8) ÅCell parameters from 5162 reflections
b = 6.7416 (1) Åθ = 3.0–27.5°
c = 14.3677 (4) ŵ = 2.32 mm1
β = 92.495 (1)°T = 120 K
V = 2419.99 (11) Å3Block, pink
Z = 40.46 × 0.28 × 0.20 mm
Data collection top
Kappa-CCD
diffractometer
5162 independent reflections
Radiation source: fine-focus sealed X-ray tube4318 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.049
ϕ scans and ω scans with κ offsetsθmax = 27.5°, θmin = 3.0°
Absorption correction: multi-scan
DENZO-SMN (Otwinowski & Minor, 1997)
h = 3232
Tmin = 0.415, Tmax = 0.654k = 85
10993 measured reflectionsl = 1118
Refinement top
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.040H-atom parameters constrained
wR(F2) = 0.102 w = 1/[σ2(Fo2) + (0.0486P)2 + 1.798P]
where P = (Fo2 + 2Fc2)/3
S = 1.06(Δ/σ)max = 0.001
5162 reflectionsΔρmax = 0.62 e Å3
355 parametersΔρmin = 0.69 e Å3
0 restraintsExtinction correction: SHELXL, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: structure-invariant direct methodsExtinction coefficient: 0.0151 (7)
Crystal data top
C14H26N10O13Sr·H2OV = 2419.99 (11) Å3
Mr = 648.08Z = 4
Monoclinic, P21/cMo Kα radiation
a = 25.0078 (8) ŵ = 2.32 mm1
b = 6.7416 (1) ÅT = 120 K
c = 14.3677 (4) Å0.46 × 0.28 × 0.20 mm
β = 92.495 (1)°
Data collection top
Kappa-CCD
diffractometer
5162 independent reflections
Absorption correction: multi-scan
DENZO-SMN (Otwinowski & Minor, 1997)
4318 reflections with I > 2σ(I)
Tmin = 0.415, Tmax = 0.654Rint = 0.049
10993 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.0400 restraints
wR(F2) = 0.102H-atom parameters constrained
S = 1.06Δρmax = 0.62 e Å3
5162 reflectionsΔρmin = 0.69 e Å3
355 parameters
Special details top

Experimental. The program DENZO-SMN (Otwinowski & Minor, 1997) uses a scaling algorithm [Fox, G·C. & Holmes, K·C. (1966). Acta Cryst. 20, 886–891] which effectively corrects for absorption effects. High redundancy data were used in the scaling program hence the 'multi-scan' code word was used. No transmission coefficients are available from the program (only scale factors for each frame). The scale factors in the experimental table are calculated from the 'size' command in the SHELXL97 input file.

Geometry. Mean-plane data from the final SHELXL97 refinement run:-

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
Sr10.278327 (10)0.14831 (4)0.407412 (18)0.01843 (11)
N110.01874 (9)0.2683 (4)0.53178 (17)0.0208 (5)
C120.05038 (11)0.2338 (4)0.4614 (2)0.0205 (6)
N120.10277 (9)0.2441 (4)0.47859 (17)0.0220 (5)
C1210.12639 (11)0.3021 (4)0.5692 (2)0.0218 (6)
C1220.18571 (11)0.3467 (4)0.5615 (2)0.0210 (6)
O1210.20475 (8)0.3312 (3)0.48286 (15)0.0266 (5)
O1220.21081 (8)0.3955 (3)0.63527 (15)0.0262 (5)
C130.06986 (12)0.1649 (5)0.2968 (2)0.0264 (7)
N130.03225 (9)0.1908 (4)0.37172 (17)0.0214 (5)
C140.02214 (11)0.1642 (4)0.3499 (2)0.0213 (6)
O140.03737 (8)0.1097 (3)0.27222 (15)0.0289 (5)
C150.05790 (11)0.2048 (4)0.4251 (2)0.0194 (6)
N150.11010 (10)0.1790 (4)0.40233 (18)0.0234 (5)
O150.14334 (8)0.2143 (3)0.46589 (15)0.0264 (5)
C160.03460 (11)0.2595 (4)0.5153 (2)0.0210 (6)
N160.06507 (10)0.3018 (4)0.58490 (18)0.0240 (5)
N210.45799 (10)0.1293 (3)0.17412 (17)0.0204 (5)
C220.42906 (11)0.1471 (4)0.0951 (2)0.0193 (6)
N220.37728 (9)0.1013 (4)0.09359 (17)0.0202 (5)
C2210.35075 (11)0.0345 (4)0.17601 (19)0.0208 (6)
C2220.32671 (11)0.2006 (4)0.2331 (2)0.0198 (6)
O2210.31165 (8)0.1533 (3)0.31213 (14)0.0227 (4)
O2220.32238 (9)0.3706 (3)0.19718 (15)0.0276 (5)
C230.41327 (11)0.2412 (5)0.0713 (2)0.0233 (6)
N230.44894 (9)0.2118 (4)0.01147 (16)0.0196 (5)
C240.50256 (11)0.2608 (4)0.0059 (2)0.0206 (6)
O240.51986 (8)0.3288 (3)0.06648 (14)0.0259 (5)
C250.53598 (11)0.2266 (4)0.0896 (2)0.0197 (6)
N250.58752 (9)0.2685 (4)0.07911 (17)0.0223 (5)
O250.62163 (8)0.2452 (3)0.14750 (14)0.0243 (4)
C260.51094 (11)0.1593 (4)0.1726 (2)0.0205 (6)
N260.54082 (10)0.1304 (4)0.24855 (17)0.0250 (6)
O10.25470 (8)0.3568 (3)0.26200 (14)0.0247 (5)
O20.34375 (8)0.1136 (3)0.55056 (15)0.0255 (5)
O30.29895 (8)0.5366 (3)0.44185 (14)0.0227 (4)
O40.24605 (8)0.1119 (3)0.52799 (15)0.0299 (5)
O50.19435 (8)0.0023 (3)0.32021 (15)0.0260 (5)
O60.15973 (9)0.3963 (3)0.29473 (16)0.0298 (5)
H120.12420.21490.43360.026*
H12A0.12180.19360.61460.026*
H12B0.10790.42120.59210.026*
H13A0.09140.04540.30880.040*
H13B0.09350.28070.29480.040*
H13C0.04980.15130.23710.040*
H16A0.05040.33430.63960.029*
H16B0.10010.29770.57680.029*
H220.35840.11190.04070.024*
H22A0.32190.05900.15650.025*
H22B0.37690.03930.21640.025*
H23A0.38420.33140.05610.035*
H23B0.43360.29870.12150.035*
H23C0.39820.11330.09160.035*
H26A0.52610.09160.30000.030*
H26B0.57560.14980.24810.030*
H11C0.28170.42220.24050.030*
H12D0.23370.28580.21650.030*
H21C0.37930.13900.53980.031*
H22D0.34890.02230.59380.031*
H31C0.30520.63600.40200.027*
H32D0.26960.58020.48050.027*
H41C0.21110.15010.53500.036*
H42D0.26700.12270.58100.036*
H51C0.18750.14600.32630.031*
H51D0.19760.02420.26030.031*
H61C0.14120.37770.23410.036*
H62D0.19160.48640.29830.036*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Sr10.01743 (15)0.02178 (16)0.01626 (15)0.00020 (10)0.00287 (10)0.00017 (10)
N110.0192 (12)0.0236 (12)0.0197 (12)0.0001 (9)0.0027 (10)0.0017 (10)
C120.0194 (13)0.0204 (14)0.0217 (15)0.0006 (11)0.0018 (11)0.0020 (11)
N120.0201 (12)0.0271 (14)0.0190 (13)0.0012 (10)0.0030 (10)0.0008 (10)
C1210.0205 (14)0.0264 (15)0.0186 (14)0.0001 (11)0.0031 (11)0.0000 (12)
C1220.0199 (13)0.0206 (14)0.0223 (15)0.0032 (11)0.0000 (11)0.0016 (11)
O1210.0208 (10)0.0371 (12)0.0221 (11)0.0003 (9)0.0041 (9)0.0047 (9)
O1220.0247 (10)0.0308 (11)0.0227 (11)0.0022 (9)0.0027 (9)0.0031 (9)
C130.0216 (14)0.0361 (17)0.0217 (15)0.0011 (12)0.0052 (12)0.0001 (13)
N130.0180 (11)0.0290 (13)0.0173 (12)0.0003 (10)0.0029 (10)0.0006 (10)
C140.0199 (13)0.0235 (15)0.0204 (15)0.0012 (11)0.0000 (11)0.0025 (11)
O140.0251 (11)0.0422 (13)0.0195 (11)0.0041 (9)0.0011 (9)0.0011 (9)
C150.0161 (12)0.0231 (14)0.0191 (14)0.0021 (10)0.0018 (11)0.0015 (11)
N150.0217 (12)0.0234 (13)0.0251 (14)0.0002 (9)0.0019 (10)0.0046 (10)
O150.0184 (10)0.0325 (11)0.0288 (12)0.0006 (9)0.0053 (9)0.0001 (9)
C160.0209 (14)0.0205 (14)0.0217 (15)0.0004 (11)0.0028 (11)0.0039 (11)
N160.0185 (12)0.0322 (14)0.0215 (13)0.0001 (10)0.0022 (10)0.0006 (11)
N210.0210 (12)0.0236 (13)0.0166 (12)0.0008 (9)0.0020 (10)0.0001 (9)
C220.0218 (13)0.0188 (13)0.0176 (14)0.0001 (11)0.0040 (11)0.0006 (11)
N220.0201 (11)0.0242 (12)0.0165 (12)0.0013 (9)0.0038 (9)0.0008 (10)
C2210.0214 (14)0.0227 (14)0.0187 (14)0.0010 (11)0.0068 (11)0.0018 (11)
C2220.0162 (13)0.0261 (14)0.0172 (14)0.0001 (11)0.0021 (11)0.0007 (11)
O2210.0239 (10)0.0263 (11)0.0183 (10)0.0010 (8)0.0048 (8)0.0015 (8)
O2220.0365 (12)0.0241 (11)0.0229 (11)0.0053 (9)0.0102 (9)0.0045 (9)
C230.0212 (14)0.0300 (16)0.0187 (14)0.0011 (12)0.0009 (11)0.0010 (12)
N230.0210 (12)0.0225 (12)0.0156 (12)0.0017 (9)0.0038 (10)0.0003 (9)
C240.0227 (14)0.0206 (14)0.0187 (14)0.0006 (11)0.0038 (11)0.0024 (11)
O240.0272 (11)0.0330 (12)0.0181 (11)0.0043 (9)0.0073 (9)0.0033 (9)
C250.0195 (13)0.0229 (14)0.0170 (14)0.0003 (11)0.0037 (11)0.0005 (11)
N250.0224 (12)0.0237 (13)0.0210 (13)0.0012 (10)0.0027 (10)0.0032 (10)
O250.0211 (10)0.0295 (12)0.0223 (11)0.0025 (8)0.0011 (8)0.0030 (9)
C260.0221 (14)0.0207 (14)0.0189 (14)0.0013 (11)0.0045 (11)0.0010 (11)
N260.0221 (12)0.0374 (15)0.0157 (12)0.0033 (10)0.0025 (10)0.0010 (10)
O10.0245 (10)0.0290 (11)0.0204 (11)0.0069 (8)0.0013 (9)0.0024 (8)
O20.0214 (10)0.0331 (12)0.0222 (11)0.0022 (8)0.0028 (8)0.0053 (9)
O30.0216 (10)0.0236 (11)0.0233 (11)0.0002 (8)0.0070 (9)0.0012 (8)
O40.0206 (10)0.0436 (14)0.0255 (12)0.0060 (9)0.0009 (9)0.0074 (10)
O50.0252 (11)0.0303 (11)0.0224 (11)0.0026 (9)0.0012 (9)0.0004 (9)
O60.0284 (11)0.0329 (12)0.0279 (12)0.0019 (9)0.0009 (9)0.0010 (10)
Geometric parameters (Å, º) top
Sr1—O1212.501 (2)N23—C241.387 (4)
Sr1—O12.566 (2)C24—C251.453 (4)
Sr1—O22.582 (2)C25—C261.445 (4)
Sr1—O52.604 (2)C26—N211.341 (4)
N11—C121.331 (4)C22—N221.330 (4)
C12—N131.379 (4)C23—N231.469 (4)
N13—C141.394 (3)C24—O241.232 (3)
C14—C151.458 (4)C25—N251.334 (4)
C15—C161.446 (4)N25—O251.282 (3)
C16—N111.346 (4)C26—N261.310 (4)
C12—N121.325 (4)N22—C2211.454 (3)
C13—N131.470 (4)N22—H220.8800
C14—O141.220 (4)C221—C2221.526 (4)
C15—N151.343 (4)C221—H22A0.9900
N15—O151.284 (3)C221—H22B0.9900
C16—N161.314 (4)C222—O2211.253 (3)
Sr1—O2212.608 (2)C222—O2221.260 (3)
Sr1—O42.617 (2)C23—H23A0.9800
Sr1—O32.710 (2)C23—H23B0.9800
Sr1—O25i2.751 (2)C23—H23C0.9800
N12—C1211.460 (4)N26—H26A0.8800
N12—H120.8800N26—H26B0.8800
C121—C1221.522 (4)O1—H11C0.8742
C121—H12A0.9900O1—H12D0.9498
C121—H12B0.9900O2—H21C0.9239
C122—O1211.250 (4)O2—H22D0.8795
C122—O1221.252 (4)O3—H31C0.8996
C13—H13A0.9800O3—H32D0.9842
C13—H13B0.9800O4—H41C0.9209
C13—H13C0.9800O4—H42D0.9082
N16—H16A0.8800O5—H51C0.9884
N16—H16B0.8800O5—H51D0.8868
N21—C221.325 (4)O6—H61C0.9770
C22—N231.390 (4)O6—H62D1.0008
O121—Sr1—O186.28 (7)N16—C16—C15120.9 (3)
O121—Sr1—O298.75 (7)N11—C16—C15121.7 (3)
O1—Sr1—O2144.45 (7)C16—N16—H16A120.0
O121—Sr1—O578.91 (7)C16—N16—H16B120.0
O1—Sr1—O570.70 (7)H16A—N16—H16B120.0
O2—Sr1—O5144.84 (7)C22—N21—C26118.4 (3)
O121—Sr1—O221150.43 (7)N21—C22—N22119.2 (3)
O1—Sr1—O22193.85 (6)N21—C22—N23124.5 (3)
O2—Sr1—O22198.14 (7)N22—C22—N23116.3 (3)
O5—Sr1—O22173.31 (6)C22—N22—C221122.5 (2)
O121—Sr1—O477.85 (7)C22—N22—H22118.8
O1—Sr1—O4147.08 (7)C221—N22—H22118.8
O2—Sr1—O467.36 (7)N22—C221—C222114.5 (2)
O5—Sr1—O477.98 (7)N22—C221—H22A108.6
O221—Sr1—O486.55 (7)C222—C221—H22A108.6
O121—Sr1—O365.31 (6)N22—C221—H22B108.6
O1—Sr1—O369.79 (6)C222—C221—H22B108.6
O2—Sr1—O380.40 (6)H22A—C221—H22B107.6
O5—Sr1—O3127.41 (6)O221—C222—O222125.3 (3)
O221—Sr1—O3141.86 (6)O221—C222—C221116.2 (2)
O4—Sr1—O3126.04 (7)O222—C222—C221118.5 (2)
O121—Sr1—O25i133.72 (6)C222—O221—Sr1142.12 (19)
O1—Sr1—O25i78.68 (6)N23—C23—H23A109.5
O2—Sr1—O25i72.51 (6)N23—C23—H23B109.5
O5—Sr1—O25i133.48 (6)H23A—C23—H23B109.5
O221—Sr1—O25i74.79 (6)N23—C23—H23C109.5
O4—Sr1—O25i132.46 (6)H23A—C23—H23C109.5
O3—Sr1—O25i68.41 (6)H23B—C23—H23C109.5
C12—N11—C16118.5 (3)C24—N23—C22120.5 (2)
N12—C12—N11117.7 (3)C24—N23—C23118.4 (2)
N12—C12—N13117.9 (3)C22—N23—C23121.0 (2)
N11—C12—N13124.4 (3)O24—C24—N23120.9 (3)
C12—N12—C121122.6 (2)O24—C24—C25123.2 (3)
C12—N12—H12118.7N23—C24—C25115.9 (3)
C121—N12—H12118.7N25—C25—C26127.9 (3)
N12—C121—C122110.2 (2)N25—C25—C24113.4 (3)
N12—C121—H12A109.6C26—C25—C24118.6 (3)
C122—C121—H12A109.6O25—N25—C25120.1 (2)
N12—C121—H12B109.6N25—O25—Sr1ii109.34 (16)
C122—C121—H12B109.6N26—C26—N21119.5 (3)
H12A—C121—H12B108.1N26—C26—C25118.9 (3)
O121—C122—O122126.2 (3)N21—C26—C25121.6 (3)
O121—C122—C121117.4 (3)C26—N26—H26A120.0
O122—C122—C121116.4 (3)C26—N26—H26B120.0
C122—O121—Sr1138.56 (19)H26A—N26—H26B120.0
N13—C13—H13A109.5Sr1—O1—H11C114.3
N13—C13—H13B109.5Sr1—O1—H12D112.6
H13A—C13—H13B109.5H11C—O1—H12D115.1
N13—C13—H13C109.5Sr1—O2—H21C115.5
H13A—C13—H13C109.5Sr1—O2—H22D133.9
H13B—C13—H13C109.5H21C—O2—H22D97.9
C12—N13—C14121.0 (2)Sr1—O3—H31C129.8
C12—N13—C13121.0 (2)Sr1—O3—H32D104.5
C14—N13—C13118.0 (2)H31C—O3—H32D106.9
O14—C14—N13120.4 (3)Sr1—O4—H41C125.5
O14—C14—C15123.9 (3)Sr1—O4—H42D115.2
N13—C14—C15115.7 (3)H41C—O4—H42D113.7
N15—C15—C16126.9 (3)Sr1—O5—H51C118.6
N15—C15—C14114.6 (3)Sr1—O5—H51D106.5
C16—C15—C14118.4 (2)H51C—O5—H51D107.8
O15—N15—C15117.1 (2)H61C—O6—H62D118.0
N16—C16—N11117.4 (3)
C16—N11—C12—N12179.6 (3)C26—N21—C22—N235.8 (4)
C16—N11—C12—N130.5 (4)N21—C22—N22—C2210.9 (4)
N11—C12—N12—C1213.5 (4)N23—C22—N22—C221179.1 (2)
N13—C12—N12—C121175.6 (2)C22—N22—C221—C22290.3 (3)
C12—N12—C121—C122166.9 (2)N22—C221—C222—O221168.3 (2)
N12—C121—C122—O1211.0 (4)N22—C221—C222—O22213.2 (4)
N12—C121—C122—O122179.0 (2)O222—C222—O221—Sr1152.5 (2)
O122—C122—O121—Sr156.2 (4)C221—C222—O221—Sr125.8 (4)
C121—C122—O121—Sr1123.8 (3)O121—Sr1—O221—C222106.8 (3)
O1—Sr1—O121—C122173.3 (3)O1—Sr1—O221—C22217.5 (3)
O2—Sr1—O121—C12228.8 (3)O2—Sr1—O221—C222128.9 (3)
O5—Sr1—O121—C122115.6 (3)O5—Sr1—O221—C22286.0 (3)
O221—Sr1—O121—C12295.4 (3)O4—Sr1—O221—C222164.5 (3)
O4—Sr1—O121—C12235.7 (3)O3—Sr1—O221—C22244.2 (3)
O3—Sr1—O121—C122103.9 (3)O25i—Sr1—O221—C22259.7 (3)
O25i—Sr1—O121—C122102.9 (3)N21—C22—N23—C240.8 (4)
N12—C12—N13—C14175.6 (3)N22—C22—N23—C24179.3 (2)
N11—C12—N13—C145.4 (4)N21—C22—N23—C23175.5 (3)
N12—C12—N13—C132.3 (4)N22—C22—N23—C234.4 (4)
N11—C12—N13—C13176.8 (3)C22—N23—C24—O24175.9 (3)
C12—N13—C14—O14173.8 (3)C23—N23—C24—O240.6 (4)
C13—N13—C14—O144.2 (4)C22—N23—C24—C254.2 (4)
C12—N13—C14—C156.1 (4)C23—N23—C24—C25179.4 (2)
C13—N13—C14—C15176.0 (2)O24—C24—C25—N252.6 (4)
O14—C14—C15—N150.4 (4)N23—C24—C25—N25177.4 (2)
N13—C14—C15—N15179.7 (2)O24—C24—C25—C26175.8 (3)
O14—C14—C15—C16177.1 (3)N23—C24—C25—C264.3 (4)
N13—C14—C15—C162.7 (4)C26—C25—N25—O251.8 (4)
C16—C15—N15—O153.2 (4)C24—C25—N25—O25180.0 (2)
C14—C15—N15—O15179.5 (2)C25—N25—O25—Sr1ii179.7 (2)
C12—N11—C16—N16177.4 (3)C22—N21—C26—N26175.8 (3)
C12—N11—C16—C153.0 (4)C22—N21—C26—C255.5 (4)
N15—C15—C16—N164.2 (5)N25—C25—C26—N261.2 (5)
C14—C15—C16—N16178.5 (3)C24—C25—C26—N26179.2 (3)
N15—C15—C16—N11175.4 (3)N25—C25—C26—N21177.6 (3)
C14—C15—C16—N111.8 (4)C24—C25—C26—N210.4 (4)
C26—N21—C22—N22174.3 (2)
Symmetry codes: (i) x+1, y+1/2, z+1/2; (ii) x+1, y1/2, z+1/2.
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N16—H16A···O14iii0.881.962.814 (3)164
N16—H16B···O150.881.972.610 (3)129
N22—H22···O3iv0.882.072.900 (3)156
N26—H26A···O24v0.882.002.745 (3)141
N26—H26B···O250.881.992.654 (3)131
O1—H11C···O222vi0.871.852.692 (3)161
O1—H12D···O122iv0.951.772.691 (3)163
O2—H21C···O24i0.932.543.431 (3)161
O2—H21C···N25i0.932.032.708 (3)129
O2—H22D···O222v0.881.942.740 (3)150
O3—H31C···O221vi0.901.932.828 (3)175
O3—H32D···O4vi0.982.273.007 (3)131
O4—H41C···O15vii0.921.752.665 (3)173
O4—H42D···O222v0.912.123.027 (3)174
O5—H51C···O60.991.872.813 (3)158
O5—H51D···O122iv0.891.922.801 (3)173
O6—H61C···O14viii0.982.603.168 (3)118
O6—H61C···N15viii0.982.113.084 (3)173
O6—H62D···O1ix1.001.992.955 (3)161
Symmetry codes: (i) x+1, y+1/2, z+1/2; (iii) x, y+1/2, z+1/2; (iv) x, y+1/2, z1/2; (v) x, y1/2, z+1/2; (vi) x, y+1, z; (vii) x, y, z+1; (viii) x, y1/2, z+1/2; (ix) x, y1, z.

Experimental details

Crystal data
Chemical formulaC14H26N10O13Sr·H2O
Mr648.08
Crystal system, space groupMonoclinic, P21/c
Temperature (K)120
a, b, c (Å)25.0078 (8), 6.7416 (1), 14.3677 (4)
β (°) 92.495 (1)
V3)2419.99 (11)
Z4
Radiation typeMo Kα
µ (mm1)2.32
Crystal size (mm)0.46 × 0.28 × 0.20
Data collection
DiffractometerKappa-CCD
diffractometer
Absorption correctionMulti-scan
DENZO-SMN (Otwinowski & Minor, 1997)
Tmin, Tmax0.415, 0.654
No. of measured, independent and
observed [I > 2σ(I)] reflections
10993, 5162, 4318
Rint0.049
(sin θ/λ)max1)0.649
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.040, 0.102, 1.06
No. of reflections5162
No. of parameters355
H-atom treatmentH-atom parameters constrained
Δρmax, Δρmin (e Å3)0.62, 0.69

Computer programs: Kappa-CCD server software (Nonius, 1997), DENZO-SMN (Otwinowski & Minor, 1997), SHELXS97 (Sheldrick, 1997), PLATON (Spek, 2001), SHELXL97 (Sheldrick, 1997) and PRPKAPPA (Ferguson, 1999).

Selected geometric parameters (Å, º) top
Sr1—O1212.501 (2)Sr1—O2212.608 (2)
Sr1—O12.566 (2)Sr1—O42.617 (2)
Sr1—O22.582 (2)Sr1—O32.710 (2)
Sr1—O52.604 (2)Sr1—O25i2.751 (2)
N15—O151.284 (3)N25—O251.282 (3)
C16—N161.314 (4)C26—N261.310 (4)
N11—C12—N12—C1213.5 (4)N21—C22—N22—C2210.9 (4)
C12—N12—C121—C122166.9 (2)C22—N22—C221—C22290.3 (3)
N12—C121—C122—O1211.0 (4)N22—C221—C222—O221168.3 (2)
C121—C122—O121—Sr1123.8 (3)C221—C222—O221—Sr125.8 (4)
Symmetry code: (i) x+1, y+1/2, z+1/2.
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
N16—H16A···O14ii0.881.962.814 (3)164
N16—H16B···O150.881.972.610 (3)129
N22—H22···O3iii0.882.072.900 (3)156
N26—H26A···O24iv0.882.002.745 (3)141
N26—H26B···O250.881.992.654 (3)131
O1—H11C···O222v0.871.852.692 (3)161
O1—H12D···O122iii0.951.772.691 (3)163
O2—H21C···O24i0.932.543.431 (3)161
O2—H21C···N25i0.932.032.708 (3)129
O2—H22D···O222iv0.881.942.740 (3)150
O3—H31C···O221v0.901.932.828 (3)175
O3—H32D···O4v0.982.273.007 (3)131
O4—H41C···O15vi0.921.752.665 (3)173
O4—H42D···O222iv0.912.123.027 (3)174
O5—H51C···O60.991.872.813 (3)158
O5—H51D···O122iii0.891.922.801 (3)173
O6—H61C···O14vii0.982.603.168 (3)118
O6—H61C···N15vii0.982.113.084 (3)173
O6—H62D···O1viii1.001.992.955 (3)161
Symmetry codes: (i) x+1, y+1/2, z+1/2; (ii) x, y+1/2, z+1/2; (iii) x, y+1/2, z1/2; (iv) x, y1/2, z+1/2; (v) x, y+1, z; (vi) x, y, z+1; (vii) x, y1/2, z+1/2; (viii) x, y1, z.
 

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