title: Tetra-aqua-bis-[3-(pyridin-4-yl)benzoato-κN]cobalt(II).
abstract: In the title compound, [Co(C(12)H(8)NO(2))(2)(H(2)O)(4)], the Co atom lies on a twofold rotation axis and has an N(2)O(4) octa-hedral coordination environment formed by four O atoms of water mol-ecules in the equatorial plane and two apical N atoms of pyridine groups. An intricate three-dimensional supra-molecular network is formed by multiple O-H⋯O hydrogen bonds between the coordinated water mol-ecules and the uncoordinated carboxyl-ate groups.
authors.affiliation: Department of Environmental and Municipal Engineering, North China University of Water Conservancy and Electric Power, Zhengzhou 450011,  People's Republic of China.
authors.forename: Hai-Rong
authors.initials: HR
authors.lastname: Wang
authors.forename: Guo-Ting
authors.initials: GT
authors.lastname: Li