Acta Cryst. (2007). E63, m1964-m1965  [ doi:10.1107/S1600536807029595 ]

Aqua(2,2'-diamino-4,4'-bi-1,3-thiazole-²N,N')(pyridine-2,6-dicarboxylato-³O,N,O')cobalt(II) tetrahydrate

C.-E. Wei, G.-H. Chen and B.-X. Liu

Abstract: The structure of the title complex, [Co(C₇H₃NO₄)(C₆H₆N₄S₂)(H₂O)]·4H₂O, displays a distorted octahedral coordination geometry around the Co^II center, formed by a diaminobithiazole molecule (DABT), one pyridine-2,6-dicarboxylate anion and one water molecule. The pyridine-2,6-dicarboxylate anion chelates the Co^II ion with a facial configuration. Within the chelating DABT ligand, the thiazole rings are twisted with respect to each other [dihedral angle 15.10 (5)°]. Uncoordinated water molecules are involved in O-HO and N-HO hydrogen bonds, with HO separations in the range 1.88-2.17 Å, stabilizing the crystal structure.

Online 22 June 2007

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