Acta Crystallographica Section C

Crystal Structure Communications

Volume 69, Part 7 (July 2013)

metal-organic compounds

ky3029 scheme

Acta Cryst. (2013). C69, 716-720    [ doi:10.1107/S0108270113012134 ]

ZnII and CuII complexes generated from 5-(pyridin-4-yl)-3-[2-(pyridin-4-yl)ethyl]-1,3,4-oxadiazole-2(3H)-thione

H.-J. Zhao, J.-P. Ma, Q.-K. Liu and Y.-B. Dong

Abstract: A new 1,3,4-oxadiazole-containing bispyridyl ligand, namely 5-(pyridin-4-yl)-3-[2-(pyridin-4-yl)ethyl]-1,3,4-oxadiazole-2(3H)-thione (L), has been used to create the novel complexes tetranitratobis{[mu]-5-(pyridin-4-yl)-3-[2-(pyridin-4-yl)ethyl]-1,3,4-oxadiazole-2(3H)-thione}zinc(II), [Zn2(NO3)4(C14H12N4OS)2], (I), and catena-poly[[[dinitratocopper(II)]-bis{[mu]-5-(pyridin-4-yl)-3-[2-(pyridin-4-yl)ethyl]-1,3,4-oxadiazole-2(3H)-thione}] nitrate acetonitrile sesquisolvate dichloromethane sesquisolvate], {[Cu(NO3)(C14H12N4OS)2]NO3·1.5CH3CN·1.5CH2Cl2}n, (II). Compound (I) presents a distorted rectangular centrosymmetric Zn2L2 ring (dimensions 9.56 × 7.06 Å), where each ZnII centre lies in a {ZnN2O4} coordination environment. These binuclear zinc metallocycles are linked into a two-dimensional network through nonclassical C-H...O hydrogen bonds. The resulting sheets lie parallel to the ac plane. Compound (II), which crystallizes as a nonmerohedral twin, is a coordination polymer with double chains of CuII centres linked by bridging L ligands, propagating parallel to the crystallographic a axis. The CuII centres adopt a distorted square-pyramidal CuN4O coordination environment with apical O atoms. The chains in (II) are interlinked via two kinds of [pi]-[pi] stacking interactions along [0\overline 11]. In addition, the structure of (II) contains channels parallel to the crystallographic a direction. The guest components in these channels consist of dichloromethane and acetonitrile solvent molecules and uncoordinated nitrate anions.

Formula: [Zn2(NO3)4(C14H12N4OS)2] and [Cu(NO3)(C14H12N4OS)2]NO3·1.5CH3CN·1.5CH2Cl2

hkldisplay filedownload file

Structure factor file (CIF format) (169.3 kbytes)
[ doi:10.1107/S0108270113012134/ky3029Isup2.hkl ]
Contains datablock I

hkldisplay filedownload file

Structure factor file (CIF format) (523.1 kbytes)
[ doi:10.1107/S0108270113012134/ky3029IIsup3.hkl ]
Contains datablock II


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