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Acta Cryst. (2009). E65, m1302-m1303 [ doi:10.1107/S1600536809039786 ]
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2-4,4'-bipyridine)bis(3-nitrobenzoato)cobalt(II)]Abstract: The hydrothermal reaction of cobalt nitrate with 4,4'-bipyridine and 3-nitrobenzoic acid lead to the formation of the title complex, [Co(C7H4NO4)2(C10H8N2)2]n. In the crystal structure, the CoII atoms are coordinated by two terminal carboxylate anions and four 4,4'-bipyridine ligands within slightly distorted octahedra. The CoII atom and one of the two independent 4,4'-bipyridine ligands are located on a twofold rotation axis, while the second independent 4,4'-bipyridine molecule is located on a centre of inversion. One of the two rings of one 4,4'-bipyridine ligand is disordered over two orientations and was refined using a split model [occupancy ratio 0.68 (2):0.32 (2)]. The CoII atoms are connected by the 4,4'-bipyridine ligands into layers, which are located parallel to the ab plane.
Online 3 October 2009
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