Aqua-[2,2'-(propane-1,3-di-yl)bis-(5-car-boxy-1H-imidazole-4-carboxyl-ato)-κ(4)N(3),O(4):N(3'),O(4')](pyridine-κN)cobalt(II)-4,4'-bipyridine (1/1).
In the title compound, [Co(C(13)H(10)N(4)O(8))(C(5)H(5)N)(H(2)O)]·C(10)H(8)N(2), the asymmetric unit comprises half a Co(II) complex located on a mirror plane and half a cocrystallized mol-ecule of 4,4'-bipyridine located on an inversion center. The Co(II) ion is six coordinate, with distorted octa-hedral geometry, ligated by two N atoms and two O atoms from a 2,2'-(propane-1,3-di-yl)bis-(5-carboxy-1H-imidazole-4-carboxyl-ate) dianion, one N atom from a pyridine mol-ecule and one coordinating water mol-ecule. The Co-O bond lengths range from 2.076 (2) to 2.1441 (15) Å, while the Co-N bond lengths are 2.138 (3) and 2.1515 (17) Å. A two-dimensional network of N-H⋯O and O-H⋯N hydrogen bonds stabilizes the crystal packing. There are π-π inter-actions between the bipyridine and imidazole rings [centroid-centroid distance = 3.7694 (4) Å]. The propane-1,3-diyl group is disordered over two conformations, with refined occupancies of 0.755 (8) and 0.245 (8).
Department of Chemistry and Chemical Engineering, Henan University of Urban Construction, Pingdingshan, Henan 467044,  People's Republic of China.
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Liu
Xia
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Li