Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 3 (March 2013)


metal-organic compounds



im2380 scheme

Acta Cryst. (2013). E69, m136    [ doi:10.1107/S160053681202716X ]

Poly[[bis{[mu]2-1,2-bis[(1H-imidazol-1-yl)methyl]benzene}([mu]4-9,10-dioxo-9,10-dihydroanthracene-1,4,5,8-tetracarboxylato)dicobalt(II)] dihydrate]

X.-L. Sheng, D.-H. Xu, B. Cai and J.-L. Liu

Abstract: The title complex, {[Co2(C18H4O10)(C14H14N4)2]·2H2O}n was synthesized from CoCl2·6H2O, 9,10-dioxo-9,10-dihydroanthracene-1,4,5,8-tetracarboxylic acid (H4AQTC) and 1,2-bis[(1H-imidazol-1-yl)methyl]benzene (o-bix) in water. The anthraquinone unit is located about a crystallographic center of inversion. Each asymmetric unit therefore contains one CoII atom and one o-bix ligand, as well as half an AQTC4- ligand and an additional solvent water molecule. The CoII ions are tetrahedrally surrounded by two O atoms from two AQTC4- anions and by two N atoms from two o-bix ligands, forming a two-dimensional coordination polymer. The solvent water molecules are connected to the carboxylate groups by O-H...O hydrogen bonds. Additional weak C-H...O hydrogen bonds are observed in the crystal structure.


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