Bis{μ-(E)-2-[(2-pyridylamino)(2-pyridylimino)methyl]benzato}bis[acetatozinc(II)] tetrahydrate

In the C 2-symmetric dinuclear title complex, [Zn2(C18H13N4O2)2(C2H3O2)2] ·4H2O, each ZnII ion is five-coordinated in a distorted trigonal bipyramidal fashion by one carboxyl-ate O atom from one benzoate ligand, one imine N atom and two pyridyl N atoms from a second benzoate ligand, and one O atom from an acetate anion. The two Zn atoms are bridged by the two benzoate ligands, forming a dinuclear structure with a 14-membered macrocycle. Adjacent dinuclear units are further connected by extensive hydrogen bonds involving the solvent water mol-ecules, giving a three-dimensional hydrogen-bonded framework. The framework can be regarded as an example of the four-connected node network of the PtS topology. © 2008 International Union of Crystallography.