Diaqua-bis-[1,2-bis-(pyridin-4-yl)ethene]-bis-[2-(4-carboxy-phen-yl)acetato]-cobalt(II).

The asymmetric unit of the title compound, [Co(C(9)H(7)O(4))(2)(C(12)H(10)N(2))(2)(H(2)O)(2)], consists of one Co(2+) ion, one mono-deprotonated 2-(4-carboxyl-atophen-yl)acetate carboxylic acid, one 1,2-bis-(pyridin-4-yl)ethane mol-ecule and one water mol-ecule. The Co(II) atom is situated on a crystallographic center of inversion and is octa-hedrally coordinated by two O atoms from two anions, two N atoms of two 1,2-bis-(pyridin-4-yl)ethane mol-ecules and two O atoms from two water mol-ecules. A three-dimensional network is established by inter-molecular O-H⋯O and O-H⋯N hydrogen bonds.