Acta Cryst. (2005). E61, m311-m313  [ doi:10.1107/S1600536805001054 ]

catena-Poly[[[bis(-4-cyanobenzoato-²O:O)bis[(4-cyanobenzoato-²O,O')cobalt(II)]]-di--4,4'-bipyridine-⁴N:N'] dihydrate dimethylformamide tetrasolvate]

H.-Y. He, L.-G. Zhu and S. W. Ng

Abstract: The crystal structure of the title compound, {[Co₂(C₈H₄NO₂)₄(C₁₀H₈N₂)₂]·2H₂O·4C₃H₇NO}_n, features a centrosymmetric eight-membered -Co-O-C-O-Co-O-C-O- ring that arises from the bridging of two Co atoms by two cyanobenzoate units across a center of symmetry. Each Co atom is also chelated by a cyanobenzoate unit and the two remaining coordination sites, trans to each other in the distorted octahedron, are occupied by the N atoms of the heterocycle, resulting in a polymeric ribbon structure. The water and dimethylformamide molecules occupy the space between the chains.

Online 22 January 2005

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