Acta Cryst. (2006). E62, m2099-m2100  [ doi:10.1107/S1600536806030340 ]

catena-Poly[[diaqua[(Z)-3-(1H-benzimidazol-2-yl)prop-2-enoato-²N,O]cobalt(II)]--(Z)-3-(1H-benzimidazol-2-yl)prop-2-enoato-²O:O']

M.-H. Zeng, Y.-L. Zhou and S. W. Ng

Abstract: In the title compound, [Co(C₁₀H₇N₂O₂)₂(H₂O)₂]_n, the Co^II atom is hexacoordinated in a distorted octahedral geometry by five O atoms [Co-O = 2.074 (2)-2.200 (2) Å] and one N atom [Co-N = 2.114 (2) Å]. One 3-(1 H-benzimidazol-2-yl)prop-2-enoate anion chelates to Co^II through N and O, whereas the other functions as a carboxylate bridge, linking the cis-water-coordinated metal atoms into a zigzag chain that runs along the a axis of the orthorhombic unit cell. The chains are consolidated into a three-dimensional network by intermolecular O-HO and N-HO hydrogen bonds.

Online 9 August 2006

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