Acta Cryst. (2009). E65, m842-m843 [ doi:10.1107/S1600536809023824 ]
The asymmetric unit of the title compound, [Hg(C13H10N3O2)Cl]·H2O, contains two independent mercury(II) complexes with slightly different conformations, related via a pseudo-inversion centre, and two water molecules. The HgII atoms show a typical linear geometry to a C atom of the benzene ring and to a Cl atom. A benzene C and the azomethine N atom chelate the HgII atoms with weak intramolecular Hg
N bonding distances of 2.735 (3) and 2.739 (3) Å, respectively. The resulting five-membered metallacycles are nearly coplanar with the benzene rings [dihedral angles = 0.9 (1) and 0.7 (1)°], while the pyridine rings make dihedral angles with the benzene units of 58.17 (1) and 56.58 (1)°. In the crystal structure, the HgII complexes are linked by hydroxy donor and pyridine acceptor groups into chains along [010]. The water molecules connect the complexes through intermolecular O-H
Ocarbonyl bonds in the a-axis direction, and the azomethine H atoms donate towards the water O atoms, forming a three-dimensional network of intermolecular O-H
N, O-H
O and N-H
O hydrogen bonds.
Chlorido(2-formyl-6-hydroxybenzaldehyde-kC1)mercury(II) was synthesized according to the reported procedure (Xu et al., 2009a). The title compound was prepared from the above compound with isonicotinoylhydrazine and recrystallized from ethanol solution at room temperature to give the desired product as colourless crystals suitable for single-crystal X-ray diffraction.
All H atoms were placed in geometrically idealized positions and constrained to ride on their patent atoms, with distances: C—H = 0.93 Å, N—H = 0.86 Å, and O—H = 0.82 Å. The Uiso(H) values were set at 1.2Ueq (C,N) and 1.5Ueq(O).
Data collection: SMART (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
| Fig. 1. The molecular structure of the title compound with displacement ellipsoids at the 30% probability level. |
| [Hg(C13H10N3O2)Cl]·H2O | F(000) = 1856 |
| Mr = 494.30 | Dx = 2.160 Mg m−3 |
| Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
| a = 14.5932 (16) Å | Cell parameters from 5064 reflections |
| b = 14.0111 (15) Å | θ = 2.7–28.3° |
| c = 15.3711 (17) Å | µ = 10.31 mm−1 |
| β = 104.685 (1)° | T = 296 K |
| V = 3040.2 (6) Å3 | Block, colorless |
| Z = 8 | 0.37 × 0.28 × 0.25 mm |
| Bruker SMART APEX CCD area-detector diffractometer | 5658 independent reflections |
| Radiation source: fine-focus sealed tube | 4683 reflections with I > 2σ(I) |
| graphite | Rint = 0.030 |
| φ and ω scans | θmax = 25.5°, θmin = 2.2° |
| Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −17→17 |
| Tmin = 0.113, Tmax = 0.179 | k = −16→16 |
| 22798 measured reflections | l = −16→18 |
| 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)] = 0.021 | Hydrogen site location: inferred from neighbouring sites |
| wR(F2) = 0.046 | H-atom parameters constrained |
| S = 1.05 | w = 1/[σ2(Fo2) + (0.0197P)2 + 1.3364P] where P = (Fo2 + 2Fc2)/3 |
| 5658 reflections | (Δ/σ)max = 0.002 |
| 381 parameters | Δρmax = 0.52 e Å−3 |
| 0 restraints | Δρmin = −0.83 e Å−3 |
| [Hg(C13H10N3O2)Cl]·H2O | V = 3040.2 (6) Å3 |
| Mr = 494.30 | Z = 8 |
| Monoclinic, P21/n | Mo Kα radiation |
| a = 14.5932 (16) Å | µ = 10.31 mm−1 |
| b = 14.0111 (15) Å | T = 296 K |
| c = 15.3711 (17) Å | 0.37 × 0.28 × 0.25 mm |
| β = 104.685 (1)° |
| Bruker SMART APEX CCD area-detector diffractometer | 5658 independent reflections |
| Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 4683 reflections with I > 2σ(I) |
| Tmin = 0.113, Tmax = 0.179 | Rint = 0.030 |
| 22798 measured reflections | θmax = 25.5° |
| R[F2 > 2σ(F2)] = 0.021 | H-atom parameters constrained |
| wR(F2) = 0.046 | Δρmax = 0.52 e Å−3 |
| S = 1.05 | Δρmin = −0.83 e Å−3 |
| 5658 reflections | Absolute structure: ? |
| 381 parameters | Flack parameter: ? |
| 0 restraints | Rogers parameter: ? |
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 > σ(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 | ||
| Hg1 | 0.909422 (9) | 0.795528 (10) | 0.140566 (10) | 0.03271 (5) | |
| Hg2 | 0.088755 (10) | 0.667392 (10) | 0.363229 (10) | 0.03354 (5) | |
| Cl1 | 1.06292 (6) | 0.74039 (8) | 0.15848 (7) | 0.0482 (3) | |
| Cl2 | −0.06489 (7) | 0.72341 (8) | 0.34424 (7) | 0.0485 (3) | |
| O1 | 0.85291 (17) | 1.00819 (18) | 0.13735 (19) | 0.0444 (7) | |
| H1 | 0.8409 | 1.0641 | 0.1231 | 0.067* | |
| O2 | 0.91602 (18) | 0.54581 (19) | 0.0795 (2) | 0.0539 (8) | |
| O3 | 0.14451 (18) | 0.45504 (17) | 0.3573 (2) | 0.0473 (7) | |
| H3 | 0.1565 | 0.3987 | 0.3693 | 0.071* | |
| O4 | 0.08053 (18) | 0.91980 (18) | 0.4187 (2) | 0.0494 (7) | |
| N1 | 0.7764 (2) | 0.6537 (2) | 0.1123 (2) | 0.0339 (7) | |
| N2 | 0.7733 (2) | 0.55515 (19) | 0.11402 (19) | 0.0338 (7) | |
| H2D | 0.7253 | 0.5255 | 0.1239 | 0.041* | |
| N3 | 0.8374 (2) | 0.2013 (2) | 0.1131 (2) | 0.0397 (8) | |
| N4 | 0.2225 (2) | 0.8089 (2) | 0.3911 (2) | 0.0362 (7) | |
| N5 | 0.2266 (2) | 0.9077 (2) | 0.39086 (19) | 0.0352 (7) | |
| H5D | 0.2760 | 0.9368 | 0.3836 | 0.042* | |
| N6 | 0.1645 (2) | 1.2624 (2) | 0.3851 (2) | 0.0397 (8) | |
| C1 | 0.7779 (2) | 0.8579 (2) | 0.1197 (2) | 0.0279 (8) | |
| C2 | 0.7707 (3) | 0.9568 (3) | 0.1195 (2) | 0.0349 (8) | |
| C3 | 0.6823 (3) | 1.0005 (3) | 0.1066 (3) | 0.0431 (10) | |
| H3A | 0.6779 | 1.0667 | 0.1076 | 0.052* | |
| C4 | 0.6011 (3) | 0.9454 (3) | 0.0924 (3) | 0.0495 (11) | |
| H4 | 0.5422 | 0.9746 | 0.0830 | 0.059* | |
| C5 | 0.6075 (3) | 0.8465 (3) | 0.0920 (3) | 0.0411 (9) | |
| H5 | 0.5528 | 0.8097 | 0.0830 | 0.049* | |
| C6 | 0.6953 (2) | 0.8023 (2) | 0.1051 (2) | 0.0313 (8) | |
| C7 | 0.6986 (3) | 0.6972 (2) | 0.1046 (2) | 0.0331 (8) | |
| H7 | 0.6430 | 0.6625 | 0.0986 | 0.040* | |
| C8 | 0.8484 (3) | 0.5069 (2) | 0.0996 (2) | 0.0351 (9) | |
| C9 | 0.8433 (2) | 0.4003 (2) | 0.1063 (2) | 0.0302 (8) | |
| C10 | 0.8804 (2) | 0.3447 (2) | 0.0486 (3) | 0.0361 (9) | |
| H10 | 0.9089 | 0.3731 | 0.0075 | 0.043* | |
| C11 | 0.8744 (2) | 0.2467 (3) | 0.0532 (3) | 0.0379 (9) | |
| H11 | 0.8973 | 0.2102 | 0.0127 | 0.046* | |
| C12 | 0.8025 (3) | 0.2558 (3) | 0.1688 (3) | 0.0416 (9) | |
| H12 | 0.7760 | 0.2254 | 0.2104 | 0.050* | |
| C13 | 0.8035 (3) | 0.3542 (3) | 0.1680 (3) | 0.0393 (9) | |
| H13 | 0.7782 | 0.3890 | 0.2079 | 0.047* | |
| C14 | 0.2197 (2) | 0.6052 (2) | 0.3792 (2) | 0.0291 (8) | |
| C15 | 0.3026 (3) | 0.6602 (2) | 0.3951 (2) | 0.0324 (8) | |
| C16 | 0.3903 (3) | 0.6153 (3) | 0.4047 (3) | 0.0446 (10) | |
| H16 | 0.4453 | 0.6518 | 0.4149 | 0.054* | |
| C17 | 0.3955 (3) | 0.5171 (3) | 0.3992 (3) | 0.0510 (11) | |
| H17 | 0.4540 | 0.4876 | 0.4057 | 0.061* | |
| C18 | 0.3143 (3) | 0.4625 (3) | 0.3840 (3) | 0.0447 (10) | |
| H18 | 0.3180 | 0.3965 | 0.3798 | 0.054* | |
| C19 | 0.2271 (3) | 0.5063 (3) | 0.3751 (2) | 0.0350 (9) | |
| C20 | 0.3007 (3) | 0.7648 (3) | 0.3986 (2) | 0.0361 (9) | |
| H20 | 0.3568 | 0.7992 | 0.4063 | 0.043* | |
| C21 | 0.1510 (2) | 0.9574 (3) | 0.4023 (2) | 0.0352 (8) | |
| C22 | 0.1583 (2) | 1.0639 (2) | 0.3948 (2) | 0.0305 (8) | |
| C23 | 0.1992 (3) | 1.1083 (3) | 0.3340 (2) | 0.0381 (9) | |
| H23 | 0.2259 | 1.0727 | 0.2955 | 0.046* | |
| C24 | 0.1997 (3) | 1.2072 (2) | 0.3315 (3) | 0.0392 (9) | |
| H24 | 0.2265 | 1.2367 | 0.2896 | 0.047* | |
| C25 | 0.1267 (3) | 1.2190 (3) | 0.4458 (3) | 0.0386 (9) | |
| H25 | 0.1036 | 1.2567 | 0.4854 | 0.046* | |
| C26 | 0.1205 (2) | 1.1212 (3) | 0.4521 (2) | 0.0372 (9) | |
| H26 | 0.0919 | 1.0936 | 0.4935 | 0.045* | |
| O5 | 0.89687 (19) | 0.9980 (2) | 0.33618 (19) | 0.0566 (8) | |
| H1W | 0.9471 | 0.9752 | 0.3683 | 0.085* | |
| H2W | 0.9002 | 1.0018 | 0.2829 | 0.085* | |
| O6 | 0.10303 (19) | 0.4671 (2) | 0.1547 (2) | 0.0618 (8) | |
| H3W | 0.0890 | 0.4581 | 0.2031 | 0.093* | |
| H4W | 0.0571 | 0.4882 | 0.1161 | 0.093* |
| U11 | U22 | U33 | U12 | U13 | U23 | |
| Hg1 | 0.03055 (8) | 0.02692 (10) | 0.04319 (9) | 0.00303 (6) | 0.01399 (6) | 0.00319 (6) |
| Hg2 | 0.03092 (8) | 0.02783 (10) | 0.04418 (9) | 0.00243 (6) | 0.01377 (6) | 0.00243 (6) |
| Cl1 | 0.0326 (5) | 0.0563 (7) | 0.0615 (7) | 0.0070 (4) | 0.0225 (5) | 0.0088 (5) |
| Cl2 | 0.0337 (5) | 0.0583 (7) | 0.0585 (7) | 0.0064 (4) | 0.0213 (5) | 0.0088 (5) |
| O1 | 0.0416 (15) | 0.0241 (15) | 0.0673 (19) | −0.0017 (11) | 0.0136 (14) | 0.0059 (13) |
| O2 | 0.0427 (16) | 0.0345 (16) | 0.092 (2) | −0.0030 (12) | 0.0304 (16) | 0.0051 (15) |
| O3 | 0.0496 (17) | 0.0181 (14) | 0.074 (2) | 0.0002 (12) | 0.0163 (14) | 0.0048 (14) |
| O4 | 0.0429 (16) | 0.0295 (16) | 0.081 (2) | −0.0021 (12) | 0.0254 (15) | 0.0056 (14) |
| N1 | 0.0407 (18) | 0.0175 (16) | 0.0423 (18) | 0.0007 (13) | 0.0085 (15) | 0.0004 (13) |
| N2 | 0.0329 (16) | 0.0204 (17) | 0.0505 (19) | −0.0019 (12) | 0.0151 (14) | −0.0009 (13) |
| N3 | 0.045 (2) | 0.026 (2) | 0.047 (2) | 0.0007 (13) | 0.0098 (16) | 0.0011 (14) |
| N4 | 0.0443 (19) | 0.0212 (17) | 0.0430 (19) | −0.0063 (14) | 0.0108 (15) | −0.0037 (14) |
| N5 | 0.0349 (17) | 0.0217 (17) | 0.0505 (19) | −0.0045 (13) | 0.0135 (14) | −0.0018 (14) |
| N6 | 0.0408 (18) | 0.0281 (19) | 0.050 (2) | 0.0005 (14) | 0.0120 (16) | 0.0004 (15) |
| C1 | 0.0333 (19) | 0.0218 (19) | 0.0300 (19) | 0.0068 (14) | 0.0103 (15) | 0.0038 (14) |
| C2 | 0.040 (2) | 0.028 (2) | 0.037 (2) | 0.0015 (16) | 0.0096 (17) | 0.0025 (16) |
| C3 | 0.048 (2) | 0.025 (2) | 0.057 (3) | 0.0112 (18) | 0.014 (2) | 0.0000 (18) |
| C4 | 0.042 (2) | 0.041 (3) | 0.063 (3) | 0.0197 (19) | 0.010 (2) | 0.004 (2) |
| C5 | 0.032 (2) | 0.035 (2) | 0.054 (3) | −0.0009 (16) | 0.0046 (18) | 0.0005 (18) |
| C6 | 0.036 (2) | 0.025 (2) | 0.034 (2) | 0.0047 (15) | 0.0097 (16) | −0.0003 (15) |
| C7 | 0.037 (2) | 0.025 (2) | 0.038 (2) | −0.0028 (15) | 0.0117 (17) | −0.0013 (16) |
| C8 | 0.036 (2) | 0.024 (2) | 0.044 (2) | −0.0021 (16) | 0.0075 (17) | 0.0039 (16) |
| C9 | 0.0301 (18) | 0.021 (2) | 0.037 (2) | 0.0014 (14) | 0.0052 (15) | 0.0032 (15) |
| C10 | 0.037 (2) | 0.029 (2) | 0.044 (2) | −0.0006 (16) | 0.0154 (18) | 0.0009 (17) |
| C11 | 0.039 (2) | 0.030 (2) | 0.046 (2) | 0.0082 (16) | 0.0132 (18) | −0.0025 (18) |
| C12 | 0.049 (2) | 0.037 (3) | 0.042 (2) | −0.0021 (18) | 0.0186 (19) | 0.0061 (19) |
| C13 | 0.052 (2) | 0.024 (2) | 0.044 (2) | 0.0024 (17) | 0.0164 (19) | −0.0021 (17) |
| C14 | 0.0347 (19) | 0.023 (2) | 0.0320 (19) | 0.0054 (14) | 0.0118 (16) | 0.0031 (15) |
| C15 | 0.038 (2) | 0.026 (2) | 0.033 (2) | 0.0030 (15) | 0.0092 (17) | 0.0014 (15) |
| C16 | 0.034 (2) | 0.040 (3) | 0.057 (3) | 0.0023 (17) | 0.0062 (19) | −0.0017 (19) |
| C17 | 0.038 (2) | 0.041 (3) | 0.070 (3) | 0.0165 (18) | 0.006 (2) | 0.005 (2) |
| C18 | 0.048 (2) | 0.026 (2) | 0.058 (3) | 0.0120 (18) | 0.009 (2) | 0.0042 (18) |
| C19 | 0.041 (2) | 0.023 (2) | 0.040 (2) | −0.0009 (16) | 0.0077 (17) | 0.0044 (16) |
| C20 | 0.034 (2) | 0.028 (2) | 0.046 (2) | −0.0025 (16) | 0.0108 (17) | −0.0024 (17) |
| C21 | 0.031 (2) | 0.032 (2) | 0.041 (2) | −0.0013 (16) | 0.0066 (17) | −0.0004 (17) |
| C22 | 0.0282 (18) | 0.023 (2) | 0.039 (2) | 0.0017 (14) | 0.0065 (16) | 0.0007 (16) |
| C23 | 0.047 (2) | 0.034 (2) | 0.037 (2) | 0.0030 (17) | 0.0175 (18) | −0.0026 (17) |
| C24 | 0.050 (2) | 0.026 (2) | 0.046 (2) | −0.0040 (16) | 0.0194 (19) | 0.0040 (17) |
| C25 | 0.040 (2) | 0.030 (2) | 0.048 (2) | 0.0069 (16) | 0.0135 (19) | −0.0033 (17) |
| C26 | 0.034 (2) | 0.040 (2) | 0.041 (2) | 0.0041 (16) | 0.0151 (17) | 0.0042 (17) |
| O5 | 0.0477 (17) | 0.068 (2) | 0.0577 (19) | 0.0121 (15) | 0.0196 (15) | 0.0016 (15) |
| O6 | 0.0449 (17) | 0.072 (2) | 0.071 (2) | 0.0108 (15) | 0.0201 (16) | −0.0060 (17) |
| Hg1—C1 | 2.059 (3) | C8—C9 | 1.501 (5) |
| Hg1—Cl1 | 2.3189 (9) | C9—C13 | 1.390 (5) |
| Hg2—C14 | 2.058 (3) | C9—C10 | 1.389 (5) |
| Hg2—Cl2 | 2.3231 (10) | C10—C11 | 1.379 (5) |
| O1—C2 | 1.366 (4) | C10—H10 | 0.9300 |
| O1—H1 | 0.8200 | C11—H11 | 0.9300 |
| O2—C8 | 1.233 (4) | C12—C13 | 1.379 (5) |
| O3—C19 | 1.369 (4) | C12—H12 | 0.9300 |
| O3—H3 | 0.8200 | C13—H13 | 0.9300 |
| O4—C21 | 1.237 (4) | C14—C19 | 1.391 (5) |
| N1—C7 | 1.268 (4) | C14—C15 | 1.402 (5) |
| N1—N2 | 1.382 (4) | C15—C16 | 1.400 (5) |
| N2—C8 | 1.354 (4) | C15—C20 | 1.468 (5) |
| N2—H2D | 0.8600 | C16—C17 | 1.383 (5) |
| N3—C12 | 1.340 (5) | C16—H16 | 0.9300 |
| N3—C11 | 1.341 (5) | C17—C18 | 1.379 (5) |
| N4—C20 | 1.277 (4) | C17—H17 | 0.9300 |
| N4—N5 | 1.386 (4) | C18—C19 | 1.389 (5) |
| N5—C21 | 1.353 (4) | C18—H18 | 0.9300 |
| N5—H5D | 0.8600 | C20—H20 | 0.9300 |
| N6—C24 | 1.323 (4) | C21—C22 | 1.502 (5) |
| N6—C25 | 1.345 (4) | C22—C23 | 1.379 (5) |
| C1—C2 | 1.388 (5) | C22—C26 | 1.402 (5) |
| C1—C6 | 1.405 (5) | C23—C24 | 1.387 (5) |
| C2—C3 | 1.397 (5) | C23—H23 | 0.9300 |
| C3—C4 | 1.384 (5) | C24—H24 | 0.9300 |
| C3—H3A | 0.9300 | C25—C26 | 1.378 (5) |
| C4—C5 | 1.389 (5) | C25—H25 | 0.9300 |
| C4—H4 | 0.9300 | C26—H26 | 0.9300 |
| C5—C6 | 1.392 (5) | O5—H1W | 0.8363 |
| C5—H5 | 0.9300 | O5—H2W | 0.8344 |
| C6—C7 | 1.473 (5) | O6—H3W | 0.8298 |
| C7—H7 | 0.9300 | O6—H4W | 0.8293 |
| C1—Hg1—Cl1 | 173.85 (10) | N3—C12—C13 | 123.8 (3) |
| C14—Hg2—Cl2 | 174.67 (10) | N3—C12—H12 | 118.1 |
| C2—O1—H1 | 109.5 | C13—C12—H12 | 118.1 |
| C19—O3—H3 | 109.5 | C12—C13—C9 | 118.5 (3) |
| C7—N1—N2 | 116.7 (3) | C12—C13—H13 | 120.7 |
| C8—N2—N1 | 117.6 (3) | C9—C13—H13 | 120.7 |
| C8—N2—H2D | 121.2 | C19—C14—C15 | 118.8 (3) |
| N1—N2—H2D | 121.2 | C19—C14—Hg2 | 119.7 (3) |
| C12—N3—C11 | 117.0 (3) | C15—C14—Hg2 | 121.4 (2) |
| C20—N4—N5 | 116.5 (3) | C16—C15—C14 | 119.8 (3) |
| C21—N5—N4 | 118.5 (3) | C16—C15—C20 | 118.0 (3) |
| C21—N5—H5D | 120.7 | C14—C15—C20 | 122.2 (3) |
| N4—N5—H5D | 120.7 | C17—C16—C15 | 120.2 (4) |
| C24—N6—C25 | 117.4 (3) | C17—C16—H16 | 119.9 |
| C2—C1—C6 | 119.5 (3) | C15—C16—H16 | 119.9 |
| C2—C1—Hg1 | 119.4 (3) | C18—C17—C16 | 120.2 (4) |
| C6—C1—Hg1 | 121.1 (2) | C18—C17—H17 | 119.9 |
| O1—C2—C1 | 117.6 (3) | C16—C17—H17 | 119.9 |
| O1—C2—C3 | 122.0 (3) | C17—C18—C19 | 119.9 (4) |
| C1—C2—C3 | 120.3 (3) | C17—C18—H18 | 120.0 |
| C4—C3—C2 | 120.0 (4) | C19—C18—H18 | 120.0 |
| C4—C3—H3A | 120.0 | O3—C19—C18 | 121.7 (3) |
| C2—C3—H3A | 120.0 | O3—C19—C14 | 117.2 (3) |
| C3—C4—C5 | 120.2 (3) | C18—C19—C14 | 121.0 (3) |
| C3—C4—H4 | 119.9 | N4—C20—C15 | 120.3 (3) |
| C5—C4—H4 | 119.9 | N4—C20—H20 | 119.9 |
| C4—C5—C6 | 120.2 (3) | C15—C20—H20 | 119.9 |
| C4—C5—H5 | 119.9 | O4—C21—N5 | 123.6 (3) |
| C6—C5—H5 | 119.9 | O4—C21—C22 | 121.2 (3) |
| C5—C6—C1 | 119.8 (3) | N5—C21—C22 | 115.2 (3) |
| C5—C6—C7 | 118.3 (3) | C23—C22—C26 | 118.4 (3) |
| C1—C6—C7 | 121.9 (3) | C23—C22—C21 | 123.4 (3) |
| N1—C7—C6 | 120.6 (3) | C26—C22—C21 | 118.3 (3) |
| N1—C7—H7 | 119.7 | C22—C23—C24 | 118.3 (3) |
| C6—C7—H7 | 119.7 | C22—C23—H23 | 120.8 |
| O2—C8—N2 | 123.6 (3) | C24—C23—H23 | 120.8 |
| O2—C8—C9 | 121.0 (3) | N6—C24—C23 | 124.1 (3) |
| N2—C8—C9 | 115.4 (3) | N6—C24—H24 | 117.9 |
| C13—C9—C10 | 118.2 (3) | C23—C24—H24 | 117.9 |
| C13—C9—C8 | 123.1 (3) | N6—C25—C26 | 122.9 (3) |
| C10—C9—C8 | 118.7 (3) | N6—C25—H25 | 118.6 |
| C11—C10—C9 | 119.1 (3) | C26—C25—H25 | 118.6 |
| C11—C10—H10 | 120.5 | C25—C26—C22 | 118.8 (3) |
| C9—C10—H10 | 120.5 | C25—C26—H26 | 120.6 |
| N3—C11—C10 | 123.3 (3) | C22—C26—H26 | 120.6 |
| N3—C11—H11 | 118.4 | H1W—O5—H2W | 110.1 |
| C10—C11—H11 | 118.4 | H3W—O6—H4W | 111.0 |
| C7—N1—N2—C8 | 163.9 (3) | C8—C9—C13—C12 | −179.9 (3) |
| C20—N4—N5—C21 | −166.2 (3) | Cl2—Hg2—C14—C19 | 2.9 (12) |
| Cl1—Hg1—C1—C2 | −23.9 (11) | Cl2—Hg2—C14—C15 | −176.6 (8) |
| Cl1—Hg1—C1—C6 | 155.6 (7) | C19—C14—C15—C16 | 1.2 (5) |
| C6—C1—C2—O1 | 177.6 (3) | Hg2—C14—C15—C16 | −179.3 (3) |
| Hg1—C1—C2—O1 | −2.8 (4) | C19—C14—C15—C20 | 178.7 (3) |
| C6—C1—C2—C3 | 1.2 (5) | Hg2—C14—C15—C20 | −1.8 (5) |
| Hg1—C1—C2—C3 | −179.2 (3) | C14—C15—C16—C17 | −0.4 (6) |
| O1—C2—C3—C4 | −177.4 (4) | C20—C15—C16—C17 | −178.0 (4) |
| C1—C2—C3—C4 | −1.1 (6) | C15—C16—C17—C18 | 0.1 (6) |
| C2—C3—C4—C5 | 0.8 (6) | C16—C17—C18—C19 | −0.6 (6) |
| C3—C4—C5—C6 | −0.6 (6) | C17—C18—C19—O3 | 178.0 (4) |
| C4—C5—C6—C1 | 0.8 (6) | C17—C18—C19—C14 | 1.4 (6) |
| C4—C5—C6—C7 | 179.7 (3) | C15—C14—C19—O3 | −178.5 (3) |
| C2—C1—C6—C5 | −1.1 (5) | Hg2—C14—C19—O3 | 2.1 (4) |
| Hg1—C1—C6—C5 | 179.4 (3) | C15—C14—C19—C18 | −1.7 (5) |
| C2—C1—C6—C7 | −179.9 (3) | Hg2—C14—C19—C18 | 178.8 (3) |
| Hg1—C1—C6—C7 | 0.5 (5) | N5—N4—C20—C15 | −177.1 (3) |
| N2—N1—C7—C6 | 178.0 (3) | C16—C15—C20—N4 | −179.3 (4) |
| C5—C6—C7—N1 | 176.9 (3) | C14—C15—C20—N4 | 3.2 (5) |
| C1—C6—C7—N1 | −4.2 (5) | N4—N5—C21—O4 | 4.8 (5) |
| N1—N2—C8—O2 | −4.8 (5) | N4—N5—C21—C22 | −175.9 (3) |
| N1—N2—C8—C9 | 177.4 (3) | O4—C21—C22—C23 | −143.1 (4) |
| O2—C8—C9—C13 | 145.8 (4) | N5—C21—C22—C23 | 37.6 (5) |
| N2—C8—C9—C13 | −36.3 (5) | O4—C21—C22—C26 | 36.2 (5) |
| O2—C8—C9—C10 | −33.8 (5) | N5—C21—C22—C26 | −143.1 (3) |
| N2—C8—C9—C10 | 144.1 (3) | C26—C22—C23—C24 | −1.0 (5) |
| C13—C9—C10—C11 | 1.5 (5) | C21—C22—C23—C24 | 178.3 (3) |
| C8—C9—C10—C11 | −178.9 (3) | C25—N6—C24—C23 | 0.5 (6) |
| C12—N3—C11—C10 | 2.0 (5) | C22—C23—C24—N6 | 1.1 (6) |
| C9—C10—C11—N3 | −2.5 (5) | C24—N6—C25—C26 | −2.2 (5) |
| C11—N3—C12—C13 | −0.6 (5) | N6—C25—C26—C22 | 2.3 (5) |
| N3—C12—C13—C9 | −0.2 (6) | C23—C22—C26—C25 | −0.6 (5) |
| C10—C9—C13—C12 | −0.3 (5) | C21—C22—C26—C25 | −179.9 (3) |
| D—H···A | D—H | H···A | D···A | D—H···A |
| O6—H4W···O2i | 0.83 | 2.15 | 2.898 (4) | 150 |
| O6—H3W···O3 | 0.83 | 2.30 | 3.023 (4) | 146 |
| O5—H2W···O1 | 0.83 | 2.17 | 2.963 (4) | 159 |
| O5—H1W···O4ii | 0.84 | 2.06 | 2.876 (4) | 166 |
| N5—H5D···O6iii | 0.86 | 2.04 | 2.872 (4) | 162 |
| N2—H2D···O5iv | 0.86 | 2.06 | 2.890 (4) | 161 |
| O3—H3···N6v | 0.82 | 1.92 | 2.737 (4) | 171 |
| O1—H1···N3vi | 0.82 | 1.93 | 2.733 (4) | 167 |
| Symmetry codes: (i) x−1, y, z; (ii) x+1, y, z; (iii) −x+1/2, y+1/2, −z+1/2; (iv) −x+3/2, y−1/2, −z+1/2; (v) x, y−1, z; (vi) x, y+1, z. |
| D—H···A | D—H | H···A | D···A | D—H···A |
| O6—H4W···O2i | 0.83 | 2.15 | 2.898 (4) | 150 |
| O6—H3W···O3 | 0.83 | 2.30 | 3.023 (4) | 146 |
| O5—H2W···O1 | 0.83 | 2.17 | 2.963 (4) | 159 |
| O5—H1W···O4ii | 0.84 | 2.06 | 2.876 (4) | 166 |
| N5—H5D···O6iii | 0.86 | 2.04 | 2.872 (4) | 162 |
| N2—H2D···O5iv | 0.86 | 2.06 | 2.890 (4) | 161 |
| O3—H3···N6v | 0.82 | 1.92 | 2.737 (4) | 171 |
| O1—H1···N3vi | 0.82 | 1.93 | 2.733 (4) | 167 |
| Symmetry codes: (i) x−1, y, z; (ii) x+1, y, z; (iii) −x+1/2, y+1/2, −z+1/2; (iv) −x+3/2, y−1/2, −z+1/2; (v) x, y−1, z; (vi) x, y+1, z. |
This work was supported by the High-Level Personnel to Start Research Fund of Pingdingshan University (No. 2006044).
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Cyclometallated compounds have attracted much research interest owing to theirs utility in synthesis, catalysis and materials (Gruter et al., 1995; Xu et al., 2009b). Among them, cyclomercurated compounds are easy to prepare through a C—H activation process and are stable but reasonably reactive. Although numerous cyclomercurated compounds have been widely investigated, and many examples have been reported(Soro et al., 2005; Hao et al., 2007), only a few cyclometallated Schiff bases containing heterocyclic ring are known(Lin et al., 2002).
The asymmetric unit of the title compound (Fig.1) contains two independent mercury(II) complexes with slightly different conformations, related via a pseudo-inversion centre (1/2a, 3/4b, 1/4c), and two water molecules. The HgII atoms show a typical linear coordination geometry with a carbon atom of the benzene ring and the chloride atom in trans position. A benzene carbon and the azomethine nitrogen atom chelate the mercury(II) atoms with weak intramolecular Hg···N bonding distances of 2.735 (3)Å and 2.739 (3) Å. which are shorter than those of the related HgII complex (Hao et al., (2007); Lin et al., (2002); Xu et al., (2009a). The C—Hg and Hg—Cl bond distances are within normal ranges. The C1—Hg1—Cl1 and C14—Hg2—Cl2 angles are 173.85 (10)° and 174.67 (10)°, slightly smaller than the ideal value of 180° in organic derivatives of mercury. The resulting five-membered metallacycles are nearly coplanar with the benzene ring, while the pyridine are not coplanar with the benzene. In the crystal structure, intermolecular O—H···O, N—H···O and O—H···N hydrogen bonds (Table 1) link the independent HgII complexes and the water molecules into a three-dimensional network.