Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536807057236/rk2055sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536807057236/rk2055Isup2.hkl |
CCDC reference: 672651
Ligand L was prepared according Fu et al., 2007. The zinc nitrate hexahydrate (59 mg, 0.2 mmol) and L (51 mg, 0.2 mmol) were mixed and dissolved in 10 ml me thanol. After stirring for an hour, the solution was filtered. Slow evaporation from the solution afforded yellow crystals suitable for X–ray diffraction.
The H atoms in water molecules were located in different Fourier maps, and then allowed to ride on the oxygen atoms with Uiso = 1.5Ueq(O). The other H atoms were placed in idealized positions and treated as riding with d(C—H) = 0.93 Å, Uiso(H) = 1.2Ueq(C) for aromatic, d(C—H) = 0.96 Å, Uiso(H) = 1.5Ueq(C) for methyl and d(N—H) = 0.86 Å, Uiso(H) = 1.2Ueq(N) for the imine group.
Data collection: TEXRAY (Molecular Structure Corporation, 1999); cell refinement: TEXRAY (Molecular Structure Corporation, 1999); data reduction: TEXSAN (Molecular Structure Corporation, 1999); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEX (McArdle, 1995); software used to prepare material for publication: SHELXL97 (Sheldrick, 1997).
[Zn(C14H13N3O2)2(H2O)4](NO3)2 | F(000) = 800 |
Mr = 772.02 | Dx = 1.559 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 14941 reflections |
a = 7.970 (4) Å | θ = 3.1–27.5° |
b = 17.647 (9) Å | µ = 0.83 mm−1 |
c = 11.838 (4) Å | T = 293 K |
β = 99.062 (16)° | Prism, yellow |
V = 1644.2 (13) Å3 | 0.20 × 0.15 × 0.12 mm |
Z = 2 |
Rigaku Weissenberg IP diffractometer | 3665 independent reflections |
Radiation source: Fine–focus sealed tube | 2955 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.053 |
ϕ–scan | θmax = 27.5°, θmin = 3.1° |
Absorption correction: empirical (TEXRAY; Molecular Structure Corporation, 1999) | h = −8→10 |
Tmin = 0.853, Tmax = 0.912 | k = −22→22 |
14941 measured reflections | l = −15→15 |
Refinement on F2 | Primary atom site location: Direct |
Least-squares matrix: Full | Secondary atom site location: Difmap |
R[F2 > 2σ(F2)] = 0.041 | Hydrogen site location: Geom |
wR(F2) = 0.101 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0413P)2 + 1.115P] where P = (Fo2 + 2Fc2)/3 |
3665 reflections | (Δ/σ)max < 0.001 |
233 parameters | Δρmax = 0.45 e Å−3 |
0 restraints | Δρmin = −0.49 e Å−3 |
[Zn(C14H13N3O2)2(H2O)4](NO3)2 | V = 1644.2 (13) Å3 |
Mr = 772.02 | Z = 2 |
Monoclinic, P21/n | Mo Kα radiation |
a = 7.970 (4) Å | µ = 0.83 mm−1 |
b = 17.647 (9) Å | T = 293 K |
c = 11.838 (4) Å | 0.20 × 0.15 × 0.12 mm |
β = 99.062 (16)° |
Rigaku Weissenberg IP diffractometer | 3665 independent reflections |
Absorption correction: empirical (TEXRAY; Molecular Structure Corporation, 1999) | 2955 reflections with I > 2σ(I) |
Tmin = 0.853, Tmax = 0.912 | Rint = 0.053 |
14941 measured reflections |
R[F2 > 2σ(F2)] = 0.041 | 0 restraints |
wR(F2) = 0.101 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.45 e Å−3 |
3665 reflections | Δρmin = −0.49 e Å−3 |
233 parameters |
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. |
Refinement. Refinement of F2 against ALL reflections. The weighted R–factor wR and goodness of fit S are based on F2, conventional R–factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > 2σ(F2) is used only for calculating R–factors(gt) etc. and is not relevant to the choice of reflections for refinement. R–factors based on F2 are statistically about twice as large as those based on F, and R–factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | ||
Zn1 | 0.5000 | 0.0000 | 0.5000 | 0.02783 (11) | |
N1 | 0.5422 (2) | 0.11807 (10) | 0.54594 (15) | 0.0297 (4) | |
N2 | 0.6791 (3) | 0.39700 (10) | 0.53791 (16) | 0.0391 (5) | |
H21 | 0.6215 | 0.3849 | 0.4728 | 0.047* | |
N3 | 0.7507 (3) | 0.46831 (11) | 0.55469 (17) | 0.0407 (5) | |
N4 | 0.1088 (3) | 0.09550 (13) | 0.71546 (18) | 0.0460 (5) | |
O1 | 0.7721 (3) | 0.36189 (9) | 0.72069 (14) | 0.0500 (5) | |
O2 | 0.6753 (4) | 0.59321 (12) | 0.27438 (18) | 0.0836 (9) | |
O3 | 0.0344 (3) | 0.07244 (13) | 0.62089 (17) | 0.0603 (6) | |
O4 | 0.2662 (3) | 0.09405 (17) | 0.7342 (2) | 0.0822 (8) | |
O5 | 0.0287 (3) | 0.11849 (15) | 0.78818 (17) | 0.0775 (8) | |
O6 | 0.2392 (2) | 0.01951 (10) | 0.47521 (16) | 0.0432 (4) | |
H61 | 0.1961 | 0.0371 | 0.5349 | 0.065* | |
H62 | 0.1652 | −0.0061 | 0.4356 | 0.065* | |
O7 | 0.4919 (2) | 0.02614 (10) | 0.32308 (14) | 0.0415 (4) | |
H71 | 0.5698 | 0.0062 | 0.2889 | 0.062* | |
H72 | 0.4224 | 0.0505 | 0.2806 | 0.062* | |
C1 | 0.4726 (3) | 0.17490 (13) | 0.47888 (19) | 0.0368 (5) | |
H1 | 0.3919 | 0.1632 | 0.4156 | 0.044* | |
C2 | 0.5161 (3) | 0.25000 (13) | 0.49998 (19) | 0.0372 (5) | |
H2 | 0.4658 | 0.2878 | 0.4513 | 0.045* | |
C3 | 0.6351 (3) | 0.26846 (12) | 0.59417 (18) | 0.0309 (5) | |
C4 | 0.7015 (3) | 0.21004 (13) | 0.66525 (19) | 0.0360 (5) | |
H4 | 0.7786 | 0.2203 | 0.7310 | 0.043* | |
C5 | 0.6527 (3) | 0.13666 (12) | 0.63803 (19) | 0.0347 (5) | |
H5 | 0.6993 | 0.0981 | 0.6865 | 0.042* | |
C6 | 0.7003 (3) | 0.34722 (12) | 0.62393 (18) | 0.0345 (5) | |
C7 | 0.7243 (4) | 0.51018 (13) | 0.4674 (2) | 0.0429 (6) | |
H7 | 0.6562 | 0.4923 | 0.4018 | 0.051* | |
C8 | 0.7972 (3) | 0.58583 (13) | 0.4663 (2) | 0.0387 (5) | |
C9 | 0.7676 (4) | 0.62883 (14) | 0.3661 (2) | 0.0457 (6) | |
C10 | 0.8338 (4) | 0.70137 (15) | 0.3637 (3) | 0.0544 (7) | |
H10 | 0.8120 | 0.7305 | 0.2975 | 0.065* | |
C11 | 0.9317 (4) | 0.72970 (16) | 0.4601 (3) | 0.0584 (8) | |
H11 | 0.9745 | 0.7787 | 0.4594 | 0.070* | |
C12 | 0.9675 (4) | 0.68698 (16) | 0.5574 (3) | 0.0619 (8) | |
H12 | 1.0373 | 0.7063 | 0.6212 | 0.074* | |
C13 | 0.8998 (4) | 0.61541 (15) | 0.5606 (2) | 0.0494 (7) | |
H13 | 0.9236 | 0.5867 | 0.6270 | 0.059* | |
C14 | 0.6210 (5) | 0.63421 (19) | 0.1741 (3) | 0.0685 (9) | |
H141 | 0.5616 | 0.6010 | 0.1171 | 0.103* | |
H142 | 0.7178 | 0.6555 | 0.1465 | 0.103* | |
H143 | 0.5465 | 0.6742 | 0.1899 | 0.103* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Zn1 | 0.0319 (2) | 0.01876 (17) | 0.03134 (19) | −0.00072 (14) | 0.00039 (13) | 0.00013 (13) |
N1 | 0.0360 (11) | 0.0208 (8) | 0.0301 (9) | −0.0031 (7) | −0.0014 (7) | −0.0001 (7) |
N2 | 0.0580 (14) | 0.0230 (9) | 0.0320 (10) | −0.0104 (9) | −0.0059 (9) | 0.0001 (7) |
N3 | 0.0596 (14) | 0.0224 (9) | 0.0374 (11) | −0.0087 (9) | −0.0005 (9) | 0.0005 (8) |
N4 | 0.0534 (15) | 0.0390 (12) | 0.0420 (12) | 0.0053 (10) | −0.0039 (10) | −0.0036 (9) |
O1 | 0.0787 (14) | 0.0295 (9) | 0.0347 (9) | −0.0137 (9) | −0.0128 (9) | 0.0005 (7) |
O2 | 0.144 (3) | 0.0406 (12) | 0.0522 (13) | −0.0262 (14) | −0.0281 (14) | 0.0150 (9) |
O3 | 0.0534 (12) | 0.0781 (15) | 0.0476 (11) | −0.0089 (11) | 0.0027 (9) | −0.0230 (10) |
O4 | 0.0555 (16) | 0.101 (2) | 0.0851 (17) | −0.0147 (14) | −0.0039 (12) | −0.0202 (15) |
O5 | 0.0921 (18) | 0.0979 (19) | 0.0391 (11) | 0.0547 (15) | −0.0002 (11) | −0.0087 (11) |
O6 | 0.0329 (9) | 0.0440 (10) | 0.0510 (10) | 0.0008 (7) | 0.0014 (7) | −0.0118 (8) |
O7 | 0.0533 (11) | 0.0350 (8) | 0.0354 (9) | 0.0093 (8) | 0.0043 (7) | 0.0047 (7) |
C1 | 0.0445 (14) | 0.0263 (11) | 0.0348 (12) | −0.0010 (10) | −0.0082 (10) | −0.0009 (9) |
C2 | 0.0492 (15) | 0.0234 (10) | 0.0337 (11) | −0.0011 (10) | −0.0097 (10) | 0.0027 (8) |
C3 | 0.0403 (13) | 0.0218 (10) | 0.0288 (10) | −0.0016 (9) | 0.0001 (9) | −0.0001 (8) |
C4 | 0.0435 (14) | 0.0279 (11) | 0.0322 (11) | −0.0054 (10) | −0.0076 (9) | 0.0012 (8) |
C5 | 0.0440 (14) | 0.0239 (10) | 0.0330 (11) | −0.0018 (9) | −0.0032 (9) | 0.0047 (8) |
C6 | 0.0470 (14) | 0.0227 (10) | 0.0314 (11) | −0.0046 (9) | −0.0016 (9) | −0.0003 (8) |
C7 | 0.0610 (17) | 0.0271 (12) | 0.0371 (13) | −0.0070 (11) | −0.0029 (11) | 0.0009 (9) |
C8 | 0.0494 (15) | 0.0249 (11) | 0.0409 (13) | −0.0031 (10) | 0.0040 (10) | 0.0021 (9) |
C9 | 0.0620 (18) | 0.0283 (12) | 0.0448 (14) | −0.0049 (11) | 0.0024 (12) | 0.0029 (10) |
C10 | 0.077 (2) | 0.0312 (13) | 0.0550 (17) | −0.0067 (13) | 0.0116 (14) | 0.0105 (11) |
C11 | 0.074 (2) | 0.0289 (13) | 0.073 (2) | −0.0169 (13) | 0.0128 (16) | 0.0012 (13) |
C12 | 0.075 (2) | 0.0404 (16) | 0.0641 (19) | −0.0207 (15) | −0.0071 (15) | −0.0045 (13) |
C13 | 0.0639 (19) | 0.0334 (13) | 0.0474 (15) | −0.0093 (12) | −0.0025 (13) | 0.0028 (10) |
C14 | 0.098 (3) | 0.0541 (19) | 0.0482 (17) | −0.0007 (18) | −0.0056 (16) | 0.0134 (14) |
Zn1—O6i | 2.0816 (19) | C1—H1 | 0.9300 |
Zn1—O6 | 2.0816 (19) | C2—C3 | 1.384 (3) |
Zn1—O7 | 2.1356 (18) | C2—H2 | 0.9300 |
Zn1—O7i | 2.1356 (18) | C3—C4 | 1.382 (3) |
Zn1—N1i | 2.166 (2) | C3—C6 | 1.506 (3) |
Zn1—N1 | 2.166 (2) | C4—C5 | 1.376 (3) |
N1—C5 | 1.330 (3) | C4—H4 | 0.9300 |
N1—C1 | 1.343 (3) | C5—H5 | 0.9300 |
N2—C6 | 1.335 (3) | C7—C8 | 1.457 (3) |
N2—N3 | 1.383 (3) | C7—H7 | 0.9300 |
N2—H21 | 0.8600 | C8—C13 | 1.378 (4) |
N3—C7 | 1.260 (3) | C8—C9 | 1.397 (3) |
N4—O5 | 1.219 (3) | C9—C10 | 1.386 (4) |
N4—O4 | 1.240 (3) | C10—C11 | 1.372 (4) |
N4—O3 | 1.250 (3) | C10—H10 | 0.9300 |
O1—C6 | 1.225 (3) | C11—C12 | 1.368 (4) |
O2—C9 | 1.365 (3) | C11—H11 | 0.9300 |
O2—C14 | 1.399 (3) | C12—C13 | 1.376 (4) |
O6—H61 | 0.8884 | C12—H12 | 0.9300 |
O6—H62 | 0.8270 | C13—H13 | 0.9300 |
O7—H71 | 0.8673 | C14—H141 | 0.9600 |
O7—H72 | 0.8106 | C14—H142 | 0.9600 |
C1—C2 | 1.383 (3) | C14—H143 | 0.9600 |
O6i—Zn1—O6 | 180.0 | C4—C3—C6 | 117.45 (19) |
O6i—Zn1—O7 | 92.82 (7) | C2—C3—C6 | 124.96 (19) |
O6—Zn1—O7 | 87.18 (7) | C5—C4—C3 | 119.5 (2) |
O6i—Zn1—O7i | 87.18 (7) | C5—C4—H4 | 120.3 |
O6—Zn1—O7i | 92.82 (7) | C3—C4—H4 | 120.3 |
O7—Zn1—O7i | 180.0 | N1—C5—C4 | 123.4 (2) |
O6i—Zn1—N1i | 89.33 (7) | N1—C5—H5 | 118.3 |
O6—Zn1—N1i | 90.67 (7) | C4—C5—H5 | 118.3 |
O7—Zn1—N1i | 88.97 (7) | O1—C6—N2 | 123.9 (2) |
O7i—Zn1—N1i | 91.03 (7) | O1—C6—C3 | 120.5 (2) |
O6i—Zn1—N1 | 90.67 (7) | N2—C6—C3 | 115.54 (19) |
O6—Zn1—N1 | 89.33 (7) | N3—C7—C8 | 122.0 (2) |
O7—Zn1—N1 | 91.03 (7) | N3—C7—H7 | 119.0 |
O7i—Zn1—N1 | 88.97 (7) | C8—C7—H7 | 119.0 |
N1i—Zn1—N1 | 180.00 (9) | C13—C8—C9 | 118.8 (2) |
C5—N1—C1 | 117.29 (19) | C13—C8—C7 | 121.8 (2) |
C5—N1—Zn1 | 119.97 (14) | C9—C8—C7 | 119.4 (2) |
C1—N1—Zn1 | 122.44 (15) | O2—C9—C10 | 124.6 (2) |
C6—N2—N3 | 119.29 (19) | O2—C9—C8 | 115.0 (2) |
C6—N2—H21 | 120.4 | C10—C9—C8 | 120.3 (3) |
N3—N2—H21 | 120.4 | C11—C10—C9 | 119.2 (3) |
C7—N3—N2 | 113.8 (2) | C11—C10—H10 | 120.4 |
O5—N4—O4 | 120.5 (2) | C9—C10—H10 | 120.4 |
O5—N4—O3 | 120.9 (3) | C12—C11—C10 | 121.0 (3) |
O4—N4—O3 | 118.6 (2) | C12—C11—H11 | 119.5 |
C9—O2—C14 | 119.5 (2) | C10—C11—H11 | 119.5 |
Zn1—O6—H61 | 116.6 | C11—C12—C13 | 119.9 (3) |
Zn1—O6—H62 | 126.6 | C11—C12—H12 | 120.1 |
H61—O6—H62 | 108.1 | C13—C12—H12 | 120.1 |
Zn1—O7—H71 | 117.2 | C12—C13—C8 | 120.7 (3) |
Zn1—O7—H72 | 129.4 | C12—C13—H13 | 119.6 |
H71—O7—H72 | 113.3 | C8—C13—H13 | 119.6 |
N1—C1—C2 | 122.7 (2) | O2—C14—H141 | 109.5 |
N1—C1—H1 | 118.6 | O2—C14—H142 | 109.5 |
C2—C1—H1 | 118.6 | H141—C14—H142 | 109.5 |
C1—C2—C3 | 119.4 (2) | O2—C14—H143 | 109.5 |
C1—C2—H2 | 120.3 | H141—C14—H143 | 109.5 |
C3—C2—H2 | 120.3 | H142—C14—H143 | 109.5 |
C4—C3—C2 | 117.6 (2) | ||
O6i—Zn1—N1—C5 | −46.33 (18) | C4—C3—C6—O1 | −19.0 (4) |
O6—Zn1—N1—C5 | 133.67 (18) | C2—C3—C6—O1 | 162.2 (3) |
O7—Zn1—N1—C5 | −139.16 (18) | C4—C3—C6—N2 | 158.8 (2) |
O7i—Zn1—N1—C5 | 40.84 (18) | C2—C3—C6—N2 | −20.0 (4) |
O6i—Zn1—N1—C1 | 127.22 (19) | N2—N3—C7—C8 | −176.6 (2) |
O6—Zn1—N1—C1 | −52.78 (19) | N3—C7—C8—C13 | 0.3 (4) |
O7—Zn1—N1—C1 | 34.38 (19) | N3—C7—C8—C9 | 178.2 (3) |
O7i—Zn1—N1—C1 | −145.62 (19) | C14—O2—C9—C10 | −9.4 (5) |
C6—N2—N3—C7 | 179.2 (3) | C14—O2—C9—C8 | 172.3 (3) |
C5—N1—C1—C2 | 2.4 (4) | C13—C8—C9—O2 | 175.3 (3) |
Zn1—N1—C1—C2 | −171.35 (19) | C7—C8—C9—O2 | −2.6 (4) |
N1—C1—C2—C3 | −0.5 (4) | C13—C8—C9—C10 | −3.1 (4) |
C1—C2—C3—C4 | −1.9 (4) | C7—C8—C9—C10 | 179.0 (3) |
C1—C2—C3—C6 | 176.8 (2) | O2—C9—C10—C11 | −176.8 (3) |
C2—C3—C4—C5 | 2.4 (4) | C8—C9—C10—C11 | 1.4 (5) |
C6—C3—C4—C5 | −176.5 (2) | C9—C10—C11—C12 | 1.3 (5) |
C1—N1—C5—C4 | −1.9 (4) | C10—C11—C12—C13 | −2.3 (5) |
Zn1—N1—C5—C4 | 171.99 (19) | C11—C12—C13—C8 | 0.5 (5) |
C3—C4—C5—N1 | −0.5 (4) | C9—C8—C13—C12 | 2.1 (5) |
N3—N2—C6—O1 | 4.3 (4) | C7—C8—C13—C12 | 179.9 (3) |
N3—N2—C6—C3 | −173.4 (2) |
Symmetry code: (i) −x+1, −y, −z+1. |
D—H···A | D—H | H···A | D···A | D—H···A |
O6—H61···O3 | 0.89 | 1.87 | 2.720 (3) | 159 |
N2—H21···O5ii | 0.86 | 2.19 | 3.022 (3) | 162 |
O6—H62···O3iii | 0.83 | 2.00 | 2.811 (3) | 165 |
O7—H71···O4i | 0.87 | 2.24 | 3.014 (3) | 148 |
O7—H72···O1iv | 0.81 | 2.01 | 2.788 (3) | 159 |
Symmetry codes: (i) −x+1, −y, −z+1; (ii) x+1/2, −y+1/2, z−1/2; (iii) −x, −y, −z+1; (iv) x−1/2, −y+1/2, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | [Zn(C14H13N3O2)2(H2O)4](NO3)2 |
Mr | 772.02 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 293 |
a, b, c (Å) | 7.970 (4), 17.647 (9), 11.838 (4) |
β (°) | 99.062 (16) |
V (Å3) | 1644.2 (13) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.83 |
Crystal size (mm) | 0.20 × 0.15 × 0.12 |
Data collection | |
Diffractometer | Rigaku Weissenberg IP diffractometer |
Absorption correction | Empirical (TEXRAY; Molecular Structure Corporation, 1999) |
Tmin, Tmax | 0.853, 0.912 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 14941, 3665, 2955 |
Rint | 0.053 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.041, 0.101, 1.05 |
No. of reflections | 3665 |
No. of parameters | 233 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.45, −0.49 |
Computer programs: TEXRAY (Molecular Structure Corporation, 1999), TEXSAN (Molecular Structure Corporation, 1999), SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), ORTEX (McArdle, 1995).
D—H···A | D—H | H···A | D···A | D—H···A |
O6—H61···O3 | 0.89 | 1.87 | 2.720 (3) | 159.2 |
N2—H21···O5i | 0.86 | 2.19 | 3.022 (3) | 161.5 |
O6—H62···O3ii | 0.83 | 2.00 | 2.811 (3) | 165.0 |
O7—H71···O4iii | 0.87 | 2.24 | 3.014 (3) | 148.3 |
O7—H72···O1iv | 0.81 | 2.01 | 2.788 (3) | 159.4 |
Symmetry codes: (i) x+1/2, −y+1/2, z−1/2; (ii) −x, −y, −z+1; (iii) −x+1, −y, −z+1; (iv) x−1/2, −y+1/2, z−1/2. |
There has been considerable interests in the design and syntheses of transition metal complexes with isonicotinoylhydrazone ligands, owing to that there are multi–dimensional structure or extended multi–dimensional structures in these complexes (Bu et al., 2000; Fu et al., 2007; Ge et al., 2006). As a continued study in these complexes, herein we report the synthesis and crystal structure of complex [Zn(C14H13N3O2)2(H2O)4]·(NO3)2, (I), where C14H13N3O2 is 2–methoxybenzaldehyde isonicotinoylhydrazonate (L).
The complex [Cd(L)2(H2O)4]·(NO3)2 (II) has been reported (Fu et al., 2007). The title complex I (Fig. 1) and the reported complex II form an isomorphous pair. These two complexes show similar molecular configurations and structure parameters. In I, the Zn atom placed on the center of symmetry. The Zn—O bond distances are 2.0816 (19) and 2.1356 (18) Å for Zn1—O6 and Zn1—O7, respectively. This difference between Zn—O(water) bonds in same compound is 0.054 (2) Å. It is normal among the values reported by Quirós et al., 1991; Ryu et al., 2005; Zhu et al., 2003. While the length of 2.166 (2) Å in Zn1—N1 is in agreement with the values reported by Sun et al., 2007 and Uçar et al., 2006. Therefore, the coordination environment of metal centre displays a slightly distorted octahedron (Fig. 1). The dihedral angle between the phenyl and pyridine ring is 21.5 (1)°, which is little bigger than 18.8 (2)° in II.
The crystal structure is stabilized by hydrogen bonds, and confers a three dimensional network as complex II. Every two neighboring complex molecules in complex I are linked by O7—H72···O1iv hydrogen bonds, forming a sheet along bc plane (Fig. 2). And these sheets were connected along a axis into a three dimensional supramolecule via the O6—H61···O3, O6—H62···O(3)iii, O7i—H71i···O4 and N2ii—H21ii···O5 hydrogen bonds (Fig. 3) (symmetry codes: (i) -x + 1, -y, -z + 1; (ii) x + 1/2, -y + 1/2, z - 1/2; (iii) -x, -y, -z + 1; (iv) x - 1/2, -y + 1/2, z - 1/2).