title: Tetra-aqua-bis-{3-carb-oxy-5-[(4-carb-oxy-phen-yl)diazen-yl]benzoato-κO}cobalt(II) dihydrate.
abstract: In the title complex, [Co(C(15)H(9)N(2)O(6))(2)(H(2)O)(4)]·2H(2)O, the Co(II) ion is located on an inversion center and is coordinated by two monodentate 3-carb-oxy-5-[(4-carb-oxy-phen-yl)diazen-yl]benzo-ate ligands and four water mol-ecules in a distorted octa-hedral geometry. In the crystal, inter-molecular O-H⋯O hydrogen bonds link the mol-ecules into a three-dimensional supra-molecular network.
authors.affiliation: College of Mechanical & Material Engineering, China Three Gorges University, Yichang 443002,  People's Republic of China.
authors.forename: Liang
authors.initials: L
authors.lastname: Bai
authors.forename: Jun
authors.initials: J
authors.lastname: Zhao