Diaqua­bis­[4-(dimethyl­amino)­benzoato-κO]bis­(nicotinamide-κN (1))zinc(II) dihydrate

In the centrosymmetric title structure, [Zn(C(9)H(10)NO(2))(2)(C(6)H(6)N(2)O)(2)(H(2)O)(2)]·2H(2)O, the Zn(II) cation, located on an inversion center, is coordinated by two 4-(methyl­amino)­benzoate anions, two nicotinamide ligands and two water mol­ecules in a slightly distorted octa­hedral geometry. The dihedral angle between the carboxyl­ate group and the attached benzene ring is 3.09 (9)°, while the pyridine and benzene rings are oriented at a dihedral angle of 77.10 (4)°. The uncoordinated water mol­ecule is linked to nicotinamide ligands by O—H⋯O hydrogen bonds. In the crystal, inter­molecular N—H⋯O, O—H⋯O and C—H⋯O hydrogen bonds link the mol­ecules into a three-dimensional network. A weak N—H⋯π inter­action also occurs.