title: Hexaaqua-cobalt(II) 3,3'-dicarb-oxy-biphenyl-4,4'-dicarboxyl-ate.
abstract: In the crystal structure of the title compound, [Co(H(2)O)(6)](C(16)H(8)O(8)), both the cation and anion are centrosymmetric. The Co cation displays a CoO(6) octa-hedral geometry formed by six water mol-ecules. In the anion, the two carboxyl groups are oriented at dihedral angles of 4.8 (5) and 10.4 (7)° with respect to the benzene ring. Very strong O-H⋯O hydrogen bonds between the protonated and deprotonated carboxylate groups occur. Neighbouring cations and anions are connected through O-H⋯O hydrogen bonds into a three-dimensional supra-molecular structure.
authors: Yu-Hua
authors: YH
authors: Zhang
authors: Jin-Mei
authors: JM
authors: Han
authors: Zong-Ze
authors: ZZ
authors: Li
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677
references: Acta Crystallogr Sect E Struct Rep Online. 2009 Mar 11;65(Pt 4):m380-1
references: 21582332
references: Acta Crystallogr Sect E Struct Rep Online. 2009 Mar 28;65(Pt 4):m452
references: 21582388