metal-organic compounds
Tetraaquabis[N,N′-bis(pyridin-3-ylmethylidene)benzene-1,4-diamine]zinc dinitrate 1.49-hydrate
aJilin Institute of Chemical Technology, Jilin 132012, People's Republic of China, and bCollege of Chemical Engineering, Northeast Dianli University, Jilin 132012, People's Republic of China
*Correspondence e-mail: haihuiyu@ciac.jl.cn
In the title compound, [Zn(C18H14N4)2(H2O)4](NO3)2·1.49H2O, the ZnII atom, lying on an inversion center, is coordinated by two N atoms from two N,N′-bis(pyridin-3-ylmethylidene)benzene-1,4-diamine ligands and four water molecules in a distorted octahedral geometry. The nitrate anion is disordered over two sets of sites, with an occupancy ratio of 0.744 (4):0.256 (4). The uncoordinated water molecule is also disordered with an occupancy factor of 0.744 (4). O—H⋯O and O—H⋯N hydrogen bonds link the complex cations, nitrate anions and uncoordinated water molecules into a supramolecular layer parallel to (102).
Related literature
For background to the design and synthesis of zinc complexes with Schiff-base ligands and their potential applications as fluorescent probes, see: Su et al. (1999); Ye et al. (2005). For the synthesis of the ligand, see: Ye et al. (2004).
Experimental
Crystal data
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Refinement
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Data collection: RAPID-AUTO (Rigaku, 1998); cell RAPID-AUTO; data reduction: CrystalStructure (Rigaku/MSC, 2002); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: XP in SHELXTL and Mercury (Macrae et al., 2006); software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536811046915/hy2483sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811046915/hy2483Isup2.hkl
The ligand L was prepared according to the previous method (Ye et al., 2004). 1,4-Diaminobenzene (2.14 mg, 10 mmol) was dissolved in methanol (20 ml), followed by addition of 3-pyridinecarboxaldehyde (4.24 mg, 40 mmol). The mixture was stirred at room temperature for 2 h and then filtered. The resulting yellow crystalline solid was washed with methanol several times and dried in air. A solution of Zn(NO3)2 (35.9 mg, 0.2 mmol) in acetonitrile (10 ml) was slowly layered onto a solution of L (117 mg, 0.625 mmol) in methylene chloride (12 ml). Diffusion between the two phases over two weeks produced colorless crystals of the title compound.
H atoms bound to C atoms were positioned geometrically and refined as riding atoms, with C—H = 0.93 Å and with Uiso(H) = 1.2Ueq(C). The water H atoms were located from difference Fourier maps and refined as riding atoms, with Uiso(H) = 1.5Ueq(O). The nitrate anion is disordered over two sets of sites. The occupancy factors were refined to a ratio of 0.744 (4):0.256 (4). The uncoordinated water molecule is also disordered with an occupancy factor of 0.744 (4).
Bipyridine-type ligands have been extensively investigated in recent years, owing to their simple structures, readily availabilities and predictable formation of network structures. Moreover, when introduced in double Schiff-base, a great deal of metal–organic frameworks with unusual network patterns and novel properties can be achieved due to the specific geometry including the different relative orientation of N-donors and the zigzag conformation of the space moiety between the two terminal coordination groups. For background to the design and syntheses of zinc complexes with Schiff-base and their potential applications as fluorescent probes, see: Su et al. (1999); Ye et al. (2005).
In the title compound (Fig. 1), the ZnII ion lies on an inversion center and is coordinated in a distorted octahedral geometry by two N atoms from two N,N'-bis(3-pyridylmethylene)-p-phenylenediamine (L) ligands in the axial positions and four O atoms of four coordinated water molecules in the equatorial positions. The Zn—O distances are 2.0705 (17) and 2.1691 (19) Å and the Zn—N distance is 2.1462 (19) Å. As shown in Fig. 2, the complex cations, nitrate anions and uncoordinated water molecules are connected by O—H···O hydrogen bonds (Table 1), forming a layer structure.
For background to the design and synthesis of zinc complexes with Schiff-base ligands and their potential applications as fluorescent probes, see: Su et al. (1999); Ye et al. (2005). For the synthesis of the ligand, see: Ye et al. (2004).
Data collection: RAPID-AUTO (Rigaku, 1998); cell
RAPID-AUTO (Rigaku, 1998); data reduction: CrystalStructure (Rigaku/MSC, 2002); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008) and Mercury (Macrae et al., 2006); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. Molecular structure of the title compound. Displacement ellipsoids are drawn at the 30% probability level. H atoms have been omitted for clarity. [Symmetry code: (i) 1 - x, -y, 1 - z.] | |
Fig. 2. A view of the layer structure in the title compound. Dashed lines denote hydrogen bonds. H atoms and minor disordered nitrate are omitted for clarity. |
[Zn(C18H14N4)2(H2O)4](NO3)2·1.49H2O | Z = 1 |
Mr = 860.95 | F(000) = 447 |
Triclinic, P1 | Dx = 1.452 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.5664 (17) Å | Cell parameters from 3864 reflections |
b = 9.928 (2) Å | θ = 3.0–27.5° |
c = 12.496 (3) Å | µ = 0.70 mm−1 |
α = 81.47 (3)° | T = 295 K |
β = 71.55 (3)° | Block, colorless |
γ = 78.78 (3)° | 0.48 × 0.28 × 0.18 mm |
V = 984.6 (4) Å3 |
Rigaku R-AXIS RAPID diffractometer | 4462 independent reflections |
Radiation source: rotation anode | 3908 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.019 |
ω scan | θmax = 27.5°, θmin = 3.0° |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | h = −10→11 |
Tmin = 0.731, Tmax = 0.885 | k = −12→12 |
9721 measured reflections | l = −16→16 |
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)] = 0.046 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.141 | H-atom parameters constrained |
S = 1.14 | w = 1/[σ2(Fo2) + (0.0912P)2 + 0.1378P] where P = (Fo2 + 2Fc2)/3 |
4462 reflections | (Δ/σ)max = 0.001 |
305 parameters | Δρmax = 0.70 e Å−3 |
0 restraints | Δρmin = −0.45 e Å−3 |
[Zn(C18H14N4)2(H2O)4](NO3)2·1.49H2O | γ = 78.78 (3)° |
Mr = 860.95 | V = 984.6 (4) Å3 |
Triclinic, P1 | Z = 1 |
a = 8.5664 (17) Å | Mo Kα radiation |
b = 9.928 (2) Å | µ = 0.70 mm−1 |
c = 12.496 (3) Å | T = 295 K |
α = 81.47 (3)° | 0.48 × 0.28 × 0.18 mm |
β = 71.55 (3)° |
Rigaku R-AXIS RAPID diffractometer | 4462 independent reflections |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | 3908 reflections with I > 2σ(I) |
Tmin = 0.731, Tmax = 0.885 | Rint = 0.019 |
9721 measured reflections |
R[F2 > 2σ(F2)] = 0.046 | 0 restraints |
wR(F2) = 0.141 | H-atom parameters constrained |
S = 1.14 | Δρmax = 0.70 e Å−3 |
4462 reflections | Δρmin = −0.45 e Å−3 |
305 parameters |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
Zn1 | 0.5000 | 0.0000 | 0.5000 | 0.03476 (14) | |
O1W | 0.4583 (2) | −0.21267 (19) | 0.52697 (18) | 0.0542 (5) | |
H1A | 0.5380 | −0.2798 | 0.5318 | 0.081* | |
H1B | 0.3719 | −0.2483 | 0.5325 | 0.081* | |
O2W | 0.27473 (19) | 0.06743 (19) | 0.46591 (14) | 0.0442 (4) | |
H2A | 0.1756 | 0.0542 | 0.5011 | 0.066* | |
H2B | 0.2754 | 0.1495 | 0.4331 | 0.066* | |
N1 | 0.3790 (2) | 0.0222 (2) | 0.67673 (15) | 0.0366 (4) | |
N2 | −0.0343 (3) | 0.2800 (2) | 0.95880 (17) | 0.0434 (4) | |
N3 | −0.5097 (3) | 0.7453 (2) | 1.10197 (19) | 0.0440 (5) | |
N4 | −0.9932 (2) | 0.9640 (2) | 1.36277 (19) | 0.0471 (5) | |
C1 | 0.4027 (3) | −0.0800 (2) | 0.7552 (2) | 0.0424 (5) | |
H1 | 0.4803 | −0.1575 | 0.7319 | 0.051* | |
C2 | 0.3184 (3) | −0.0765 (3) | 0.8683 (2) | 0.0483 (6) | |
H2 | 0.3395 | −0.1497 | 0.9202 | 0.058* | |
C3 | 0.2017 (3) | 0.0377 (3) | 0.9038 (2) | 0.0446 (5) | |
H3 | 0.1406 | 0.0412 | 0.9798 | 0.054* | |
C4 | 0.1767 (3) | 0.1469 (2) | 0.82479 (19) | 0.0363 (4) | |
C5 | 0.2690 (3) | 0.1342 (2) | 0.71269 (19) | 0.0375 (5) | |
H5 | 0.2539 | 0.2074 | 0.6593 | 0.045* | |
C6 | 0.0548 (3) | 0.2709 (2) | 0.8576 (2) | 0.0408 (5) | |
H6 | 0.0432 | 0.3437 | 0.8031 | 0.049* | |
C7 | −0.1540 (3) | 0.3988 (2) | 0.9907 (2) | 0.0399 (5) | |
C8 | −0.2182 (3) | 0.4937 (3) | 0.9165 (2) | 0.0458 (5) | |
H8 | −0.1824 | 0.4822 | 0.8395 | 0.055* | |
C9 | −0.3352 (3) | 0.6051 (3) | 0.9566 (2) | 0.0458 (5) | |
H9 | −0.3769 | 0.6686 | 0.9059 | 0.055* | |
C10 | −0.3921 (3) | 0.6249 (2) | 1.0708 (2) | 0.0400 (5) | |
C11 | −0.3289 (3) | 0.5300 (3) | 1.1453 (2) | 0.0474 (6) | |
H11 | −0.3652 | 0.5418 | 1.2222 | 0.057* | |
C12 | −0.2112 (3) | 0.4169 (3) | 1.1054 (2) | 0.0477 (6) | |
H12 | −0.1704 | 0.3526 | 1.1562 | 0.057* | |
C13 | −0.6147 (3) | 0.7459 (3) | 1.1989 (2) | 0.0454 (5) | |
H13 | −0.6136 | 0.6676 | 1.2499 | 0.054* | |
C14 | −0.7385 (3) | 0.8685 (2) | 1.2324 (2) | 0.0391 (5) | |
C15 | −0.7352 (3) | 0.9931 (3) | 1.1659 (2) | 0.0443 (5) | |
H15 | −0.6479 | 1.0040 | 1.1000 | 0.053* | |
C16 | −0.8622 (3) | 1.1002 (3) | 1.1987 (3) | 0.0511 (6) | |
H16 | −0.8623 | 1.1849 | 1.1554 | 0.061* | |
C17 | −0.9892 (3) | 1.0806 (3) | 1.2962 (2) | 0.0473 (6) | |
H17 | −1.0768 | 1.1528 | 1.3164 | 0.057* | |
C18 | −0.8701 (3) | 0.8603 (3) | 1.3314 (2) | 0.0458 (5) | |
H18 | −0.8719 | 0.7780 | 1.3780 | 0.055* | |
O3 | 0.1857 (5) | −0.6809 (2) | 0.3557 (3) | 0.0680 (9) | 0.744 (4) |
O4 | 0.3062 (5) | −0.5772 (4) | 0.4302 (5) | 0.1089 (17) | 0.744 (4) |
O5 | 0.1009 (5) | −0.4680 (3) | 0.3743 (3) | 0.0796 (10) | 0.744 (4) |
N5 | 0.1921 (5) | −0.5781 (4) | 0.3878 (3) | 0.0653 (10) | 0.744 (4) |
O3' | 0.205 (2) | −0.352 (3) | 0.587 (3) | 0.063 (4) | 0.256 (4) |
O4' | 0.3410 (16) | −0.4995 (13) | 0.4725 (14) | 0.109 (5) | 0.256 (4) |
O5' | 0.1218 (17) | −0.5612 (10) | 0.5901 (10) | 0.091 (4) | 0.256 (4) |
N5' | 0.2171 (12) | −0.4742 (8) | 0.5525 (8) | 0.050 (2) | 0.256 (4) |
O3W | 0.1962 (15) | −0.3745 (12) | 0.5856 (14) | 0.108 (4) | 0.744 (4) |
H3A | 0.0988 | −0.3961 | 0.6259 | 0.162* | 0.744 (4) |
H3B | 0.2440 | −0.4359 | 0.5361 | 0.162* | 0.744 (4) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Zn1 | 0.02806 (19) | 0.0387 (2) | 0.0302 (2) | 0.00313 (13) | −0.00152 (13) | −0.00763 (13) |
O1W | 0.0454 (10) | 0.0420 (9) | 0.0700 (13) | −0.0046 (8) | −0.0107 (9) | −0.0064 (8) |
O2W | 0.0275 (7) | 0.0564 (10) | 0.0400 (9) | 0.0010 (7) | −0.0030 (6) | −0.0030 (7) |
N1 | 0.0319 (8) | 0.0402 (9) | 0.0307 (9) | 0.0030 (7) | −0.0031 (7) | −0.0066 (7) |
N2 | 0.0399 (10) | 0.0426 (10) | 0.0383 (10) | 0.0044 (8) | −0.0015 (8) | −0.0109 (8) |
N3 | 0.0373 (10) | 0.0410 (10) | 0.0473 (11) | 0.0046 (8) | −0.0056 (9) | −0.0138 (9) |
N4 | 0.0330 (9) | 0.0576 (12) | 0.0448 (11) | −0.0024 (9) | −0.0009 (8) | −0.0164 (10) |
C1 | 0.0356 (11) | 0.0429 (11) | 0.0392 (12) | 0.0066 (9) | −0.0045 (9) | −0.0062 (9) |
C2 | 0.0481 (13) | 0.0498 (13) | 0.0366 (12) | 0.0048 (11) | −0.0082 (10) | 0.0020 (10) |
C3 | 0.0405 (12) | 0.0538 (13) | 0.0302 (11) | 0.0032 (10) | −0.0025 (9) | −0.0065 (10) |
C4 | 0.0303 (10) | 0.0408 (11) | 0.0331 (11) | 0.0005 (9) | −0.0035 (8) | −0.0098 (9) |
C5 | 0.0334 (10) | 0.0390 (11) | 0.0339 (11) | 0.0023 (9) | −0.0054 (8) | −0.0055 (9) |
C6 | 0.0380 (11) | 0.0404 (11) | 0.0372 (11) | 0.0023 (9) | −0.0042 (9) | −0.0094 (9) |
C7 | 0.0342 (10) | 0.0392 (11) | 0.0387 (12) | 0.0015 (9) | −0.0017 (9) | −0.0101 (9) |
C8 | 0.0437 (12) | 0.0512 (13) | 0.0331 (11) | 0.0026 (11) | −0.0020 (10) | −0.0090 (10) |
C9 | 0.0405 (12) | 0.0474 (12) | 0.0414 (13) | 0.0039 (10) | −0.0069 (10) | −0.0049 (10) |
C10 | 0.0314 (10) | 0.0376 (11) | 0.0445 (12) | 0.0002 (9) | −0.0028 (9) | −0.0096 (9) |
C11 | 0.0468 (13) | 0.0498 (13) | 0.0378 (12) | 0.0052 (11) | −0.0048 (10) | −0.0144 (10) |
C12 | 0.0477 (13) | 0.0480 (13) | 0.0368 (12) | 0.0082 (11) | −0.0054 (10) | −0.0082 (10) |
C13 | 0.0371 (11) | 0.0412 (12) | 0.0501 (14) | 0.0006 (10) | −0.0048 (10) | −0.0069 (10) |
C14 | 0.0297 (10) | 0.0430 (11) | 0.0412 (12) | 0.0007 (9) | −0.0056 (9) | −0.0126 (9) |
C15 | 0.0384 (11) | 0.0486 (13) | 0.0405 (12) | −0.0059 (10) | −0.0020 (10) | −0.0104 (10) |
C16 | 0.0504 (14) | 0.0402 (12) | 0.0574 (16) | −0.0018 (11) | −0.0100 (12) | −0.0083 (11) |
C17 | 0.0357 (11) | 0.0463 (12) | 0.0556 (15) | 0.0028 (10) | −0.0066 (10) | −0.0192 (11) |
C18 | 0.0371 (11) | 0.0501 (13) | 0.0424 (13) | −0.0031 (10) | −0.0032 (10) | −0.0040 (10) |
O3 | 0.117 (3) | 0.0299 (12) | 0.0700 (19) | 0.0042 (14) | −0.0529 (19) | −0.0107 (11) |
O4 | 0.087 (3) | 0.077 (3) | 0.184 (5) | 0.014 (2) | −0.074 (3) | −0.039 (3) |
O5 | 0.096 (2) | 0.0527 (16) | 0.082 (2) | 0.0106 (16) | −0.031 (2) | −0.0014 (15) |
N5 | 0.071 (2) | 0.056 (2) | 0.065 (2) | −0.0079 (17) | −0.0215 (18) | 0.0064 (16) |
O3' | 0.046 (6) | 0.033 (5) | 0.112 (12) | −0.003 (5) | −0.012 (6) | −0.040 (6) |
O4' | 0.085 (8) | 0.088 (8) | 0.147 (12) | −0.017 (6) | −0.003 (8) | −0.055 (8) |
O5' | 0.132 (10) | 0.050 (5) | 0.087 (8) | −0.030 (6) | −0.022 (7) | 0.002 (5) |
N5' | 0.067 (6) | 0.022 (4) | 0.058 (5) | 0.013 (4) | −0.022 (5) | −0.012 (3) |
O3W | 0.118 (6) | 0.082 (7) | 0.137 (6) | −0.035 (4) | −0.028 (4) | −0.043 (5) |
Zn1—N1 | 2.1462 (19) | C8—C9 | 1.376 (3) |
Zn1—O1W | 2.1691 (19) | C8—H8 | 0.9300 |
Zn1—O2W | 2.0705 (17) | C9—C10 | 1.385 (4) |
O1W—H1A | 0.8670 | C9—H9 | 0.9300 |
O1W—H1B | 0.8608 | C10—C11 | 1.381 (4) |
O2W—H2A | 0.8497 | C11—C12 | 1.391 (3) |
O2W—H2B | 0.8565 | C11—H11 | 0.9300 |
N1—C1 | 1.335 (3) | C12—H12 | 0.9300 |
N1—C5 | 1.341 (3) | C13—C14 | 1.466 (3) |
N2—C6 | 1.259 (3) | C13—H13 | 0.9300 |
N2—C7 | 1.418 (3) | C14—C15 | 1.384 (4) |
N3—C13 | 1.259 (3) | C14—C18 | 1.389 (3) |
N3—C10 | 1.420 (3) | C15—C16 | 1.372 (3) |
N4—C17 | 1.321 (4) | C15—H15 | 0.9300 |
N4—C18 | 1.328 (3) | C16—C17 | 1.371 (4) |
C1—C2 | 1.371 (3) | C16—H16 | 0.9300 |
C1—H1 | 0.9300 | C17—H17 | 0.9300 |
C2—C3 | 1.382 (3) | C18—H18 | 0.9300 |
C2—H2 | 0.9300 | O3—N5 | 1.167 (4) |
C3—C4 | 1.386 (3) | O4—N5 | 1.252 (5) |
C3—H3 | 0.9300 | O5—N5 | 1.237 (5) |
C4—C5 | 1.384 (3) | O3'—N5' | 1.32 (3) |
C4—C6 | 1.468 (3) | O4'—N5' | 1.220 (15) |
C5—H5 | 0.9300 | O5'—N5' | 1.243 (14) |
C6—H6 | 0.9300 | O3W—H3A | 0.8756 |
C7—C8 | 1.383 (4) | O3W—H3B | 0.8812 |
C7—C12 | 1.388 (3) | ||
O2W—Zn1—O2Wi | 180.0 | C4—C6—H6 | 119.6 |
O2W—Zn1—N1 | 90.18 (7) | C8—C7—C12 | 119.0 (2) |
O2Wi—Zn1—N1 | 89.82 (7) | C8—C7—N2 | 124.7 (2) |
O2W—Zn1—N1i | 89.82 (7) | C12—C7—N2 | 116.3 (2) |
O2Wi—Zn1—N1i | 90.18 (7) | C9—C8—C7 | 120.0 (2) |
N1—Zn1—N1i | 180.0 | C9—C8—H8 | 120.0 |
O2W—Zn1—O1Wi | 88.56 (8) | C7—C8—H8 | 120.0 |
O2Wi—Zn1—O1Wi | 91.44 (8) | C8—C9—C10 | 121.5 (2) |
N1—Zn1—O1Wi | 90.24 (8) | C8—C9—H9 | 119.3 |
N1i—Zn1—O1Wi | 89.76 (8) | C10—C9—H9 | 119.3 |
O2W—Zn1—O1W | 91.44 (8) | C11—C10—C9 | 118.7 (2) |
O2Wi—Zn1—O1W | 88.56 (8) | C11—C10—N3 | 124.8 (2) |
N1—Zn1—O1W | 89.76 (8) | C9—C10—N3 | 116.5 (2) |
N1i—Zn1—O1W | 90.24 (8) | C10—C11—C12 | 120.1 (2) |
O1Wi—Zn1—O1W | 180.0 | C10—C11—H11 | 119.9 |
Zn1—O1W—H1A | 120.9 | C12—C11—H11 | 119.9 |
Zn1—O1W—H1B | 131.5 | C7—C12—C11 | 120.7 (2) |
H1A—O1W—H1B | 107.6 | C7—C12—H12 | 119.7 |
Zn1—O2W—H2A | 133.0 | C11—C12—H12 | 119.7 |
Zn1—O2W—H2B | 108.5 | N3—C13—C14 | 120.9 (2) |
H2A—O2W—H2B | 110.5 | N3—C13—H13 | 119.6 |
C1—N1—C5 | 117.18 (19) | C14—C13—H13 | 119.6 |
C1—N1—Zn1 | 120.75 (15) | C15—C14—C18 | 117.5 (2) |
C5—N1—Zn1 | 121.93 (15) | C15—C14—C13 | 122.4 (2) |
C6—N2—C7 | 121.0 (2) | C18—C14—C13 | 120.0 (2) |
C13—N3—C10 | 120.0 (2) | C16—C15—C14 | 119.1 (2) |
C17—N4—C18 | 117.9 (2) | C16—C15—H15 | 120.4 |
N1—C1—C2 | 123.4 (2) | C14—C15—H15 | 120.4 |
N1—C1—H1 | 118.3 | C17—C16—C15 | 119.0 (2) |
C2—C1—H1 | 118.3 | C17—C16—H16 | 120.5 |
C1—C2—C3 | 118.8 (2) | C15—C16—H16 | 120.5 |
C1—C2—H2 | 120.6 | N4—C17—C16 | 123.2 (2) |
C3—C2—H2 | 120.6 | N4—C17—H17 | 118.4 |
C2—C3—C4 | 119.2 (2) | C16—C17—H17 | 118.4 |
C2—C3—H3 | 120.4 | N4—C18—C14 | 123.3 (2) |
C4—C3—H3 | 120.4 | N4—C18—H18 | 118.4 |
C5—C4—C3 | 117.6 (2) | C14—C18—H18 | 118.4 |
C5—C4—C6 | 120.7 (2) | O3—N5—O5 | 123.6 (4) |
C3—C4—C6 | 121.6 (2) | O3—N5—O4 | 117.9 (4) |
N1—C5—C4 | 123.7 (2) | O5—N5—O4 | 118.3 (4) |
N1—C5—H5 | 118.2 | O4'—N5'—O5' | 118.7 (10) |
C4—C5—H5 | 118.2 | O4'—N5'—O3' | 112.3 (15) |
N2—C6—C4 | 120.8 (2) | O5'—N5'—O3' | 129.0 (15) |
N2—C6—H6 | 119.6 | H3A—O3W—H3B | 107.9 |
Symmetry code: (i) −x+1, −y, −z+1. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H1A···O4ii | 0.87 | 1.87 | 2.725 (4) | 170 |
O1W—H1A···O4′ii | 0.87 | 2.23 | 3.035 (13) | 154 |
O1W—H1B···O3W | 0.86 | 2.03 | 2.859 (13) | 161 |
O1W—H1B···O3′ | 0.86 | 1.82 | 2.65 (3) | 161 |
O2W—H2A···N4iii | 0.85 | 1.92 | 2.706 (3) | 152 |
O2W—H2B···O3iv | 0.86 | 1.96 | 2.761 (3) | 155 |
O3W—H3A···O3v | 0.88 | 2.36 | 3.073 (12) | 139 |
O3W—H3A···O5v | 0.88 | 2.38 | 3.112 (13) | 142 |
O3W—H3B···O4 | 0.88 | 1.95 | 2.824 (13) | 169 |
Symmetry codes: (ii) −x+1, −y−1, −z+1; (iii) −x−1, −y+1, −z+2; (iv) x, y+1, z; (v) −x, −y−1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | [Zn(C18H14N4)2(H2O)4](NO3)2·1.49H2O |
Mr | 860.95 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 295 |
a, b, c (Å) | 8.5664 (17), 9.928 (2), 12.496 (3) |
α, β, γ (°) | 81.47 (3), 71.55 (3), 78.78 (3) |
V (Å3) | 984.6 (4) |
Z | 1 |
Radiation type | Mo Kα |
µ (mm−1) | 0.70 |
Crystal size (mm) | 0.48 × 0.28 × 0.18 |
Data collection | |
Diffractometer | Rigaku R-AXIS RAPID |
Absorption correction | Multi-scan (ABSCOR; Higashi, 1995) |
Tmin, Tmax | 0.731, 0.885 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 9721, 4462, 3908 |
Rint | 0.019 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.046, 0.141, 1.14 |
No. of reflections | 4462 |
No. of parameters | 305 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.70, −0.45 |
Computer programs: RAPID-AUTO (Rigaku, 1998), CrystalStructure (Rigaku/MSC, 2002), XP in SHELXTL (Sheldrick, 2008) and Mercury (Macrae et al., 2006).
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H1A···O4i | 0.87 | 1.87 | 2.725 (4) | 170 |
O1W—H1A···O4'i | 0.87 | 2.23 | 3.035 (13) | 154 |
O1W—H1B···O3W | 0.86 | 2.03 | 2.859 (13) | 161 |
O1W—H1B···O3' | 0.86 | 1.82 | 2.65 (3) | 161 |
O2W—H2A···N4ii | 0.85 | 1.92 | 2.706 (3) | 152 |
O2W—H2B···O3iii | 0.86 | 1.96 | 2.761 (3) | 155 |
O3W—H3A···O3iv | 0.88 | 2.36 | 3.073 (12) | 139 |
O3W—H3A···O5iv | 0.88 | 2.38 | 3.112 (13) | 142 |
O3W—H3B···O4 | 0.88 | 1.95 | 2.824 (13) | 169 |
Symmetry codes: (i) −x+1, −y−1, −z+1; (ii) −x−1, −y+1, −z+2; (iii) x, y+1, z; (iv) −x, −y−1, −z+1. |
Acknowledgements
This work was supported financially by the Natural Science Foundation of Jilin Province (grant Nos. 2010178 and 2011073).
References
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Rigaku (1998). RAPID-AUTO. Rigaku Corporation, Tokyo, Japan. Google Scholar
Rigaku/MSC (2002). CrystalStructure. Rigaku/MSC Inc., The Woodlands, Texas, USA. Google Scholar
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Bipyridine-type ligands have been extensively investigated in recent years, owing to their simple structures, readily availabilities and predictable formation of network structures. Moreover, when introduced in double Schiff-base, a great deal of metal–organic frameworks with unusual network patterns and novel properties can be achieved due to the specific geometry including the different relative orientation of N-donors and the zigzag conformation of the space moiety between the two terminal coordination groups. For background to the design and syntheses of zinc complexes with Schiff-base and their potential applications as fluorescent probes, see: Su et al. (1999); Ye et al. (2005).
In the title compound (Fig. 1), the ZnII ion lies on an inversion center and is coordinated in a distorted octahedral geometry by two N atoms from two N,N'-bis(3-pyridylmethylene)-p-phenylenediamine (L) ligands in the axial positions and four O atoms of four coordinated water molecules in the equatorial positions. The Zn—O distances are 2.0705 (17) and 2.1691 (19) Å and the Zn—N distance is 2.1462 (19) Å. As shown in Fig. 2, the complex cations, nitrate anions and uncoordinated water molecules are connected by O—H···O hydrogen bonds (Table 1), forming a layer structure.