Acta Cryst. (2002). E58, m25-m27  [ doi:10.1107/S1600536801020888 ]

Hexaaquabis(-pyridine-2,6-dicarboxylato-O,N,O':O)dicadmium(II)-pyridine-2,6-dicarboxylic acid (1/2)

M. Odoko, A. Kusano and N. Okabe

Abstract: In the structure of the title compound, [Cd₂(C₇H₃NO₄)₂(H₂O)₆]·2C₇H₅NO₄, a centrosymmetric dinuclear Cd^II complex and free pyridine-2,6-dicarboxylic acid are present in a 1:2 ratio. Within the dinuclear complex, two Cd²⁺ ions are bridged by two carboxylate O atoms. Each Cd²⁺ ion is coordinated by one N and three O atoms of the pyridine-2,6-dicarboxylato ligands and three water O atoms, resulting in a distorted pentagonal bipyramidal coordination. The crystal structure is stabilized by hydrogen bonds involving all the H atoms of the water ligands.

Online 14 December 2001

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