Crystal structure of catena-poly[[di­aqua­cobalt(II)]-bis­[μ-5-(4-carb­oxy­ylato­phenyl)picolinato]-κ3 N,O 2:O 5;κ3 O 5:N,O 2-[di­aqua­cobalt(II)]-μ-1-[4-(1H-imidazol-1-yl)phen­yl]-1H-imidazole-κ2 N 3:N 3′]

• Published in: Acta crystallographica. Section E, Crystallographic communications Crystallographic communications, 2015-06, Vol.71 (Pt 7), p.m145-m146
• Main Authors: Xu, Guo-Wang, Wang, Ye-Nan, Wang, Hai-Bing, Wang, Zhong-Long
• Format: Article
• Language: English
• Subjects: Data Reports
• ISSN: 2056-9890
• DOI: 10.1107/S2056989015012190

The asymmetric unit of the title polymeric Co II complex, [Co 2 (C 13 H 7 NO 4 ) 2 (C 12 H 10 N 4 )(H 2 O) 4 ] n , contains a Co II cation, a 5-(4-carboxyl­atophen­yl)picolinate dianion, two coordination water mol­ecules and half of 1-[4-(1 H -imidazol-1-yl)phen­yl]-1 H -imidazole ligand. The Co II cation is coordinated by two picolinate dianions, two water mol­ecules and one 1-[4-(1 H -imidazol-1-yl)phen­yl]-1 H -imidazole mol­ecule in a distorted N 2 O 4 octa­hedral coordination geometry. The two picolinate dianions are related by an inversion centre and link two Co II cations, forming a binuclear unit, which is further bridged by the imidazole mol­ecules, located about an inversion centre, into the polymeric chain propagating along the [-1-11] direction. In the crystal, the three-dimensional supra­molecular architecture is constructed by O—H⋯O hydrogen bonds between the coordinating water mol­ecules and the non-coordinating carboxyl­ate O atoms of adjacent polymeric chains.