catena-Poly[[[cis-aquabis(4-carboxycyclohexane-1-carboxylato-kappa2O,O')cadmium(II)]-mu-4,4'-bipyridine-kappa2N:N] monohydrate]

• Published in: Acta crystallographica. Section C, Crystal structure communications Vol. 62; no. Pt 12; pp. m612 - m613
• Main Authors: Yang, E, Zhuang, Rong Qiang, Chen, Jian Xin
• Format: Journal Article
• Language: English
• Published: United States 01.12.2006
• ISSN: 0108-2701

The title complex, {[Cd(C8H11O4)2(C10H8N2)(H2O)].H2O}(n), consists of linear chains formed through 4,4'-bipyridine ligands linking seven-coordinated Cd(II) ions. Each Cd(II) ion is in a distorted pentagonal-bipyramidal environment, coordinated by one water ligand, two 4-carboxycyclohexane-1-carboxylate ligands and one bridging 4,4'-bipyridine ligand to generate linear chains. The water molecules and the Cd atom on one side, and the 4,4'-bipyridine unit on the other, are bisected by two sets of twofold axes. The carboxylate group of the 4-carboxycyclohexane-1-carboxyl ligand chelates a Cd(II) ion, while the (protonated) carboxyl group forms hydrogen bonds with adjacent chains, resulting in a layered structure. This is the first reported occurrence of a dicarboxycyclohexane ligand exhibiting a non-bridging coordination mode.