Aqua-[2,2′-(propane-1,3-di-yl)bis-(5-car-boxy-1H-imidazole-4- carboxyl-ato)-k4N k3,O 4:N 3′, O 4′](pyridine-kN)cobalt(II)-4,4′-bipyridine (1/1)

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Abstract

In the title compound, [Co(C13H10N4O 8)(C5H5N)(H2O)]·C 10H8N2, the asymmetric unit comprises half a CoII 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).

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Liu, W., & Li, X. (2012). Aqua-[2,2′-(propane-1,3-di-yl)bis-(5-car-boxy-1H-imidazole-4- carboxyl-ato)-k4N k3,O 4:N 3′, O 4′](pyridine-kN)cobalt(II)-4,4′-bipyridine (1/1). Acta Crystallographica Section E: Structure Reports Online, 68(8). https://doi.org/10.1107/S1600536812029856

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