Bis(2,2′-bipyridine-κ2N,N′)(3-methylbenzoato-κ2O,O′)zinc 3-methylbenzoate–3-methylbenzoic acid–water (1/1/2)

Abstract

The title compound, [Zn(C8H7O2)(C10H8N2)2](C8H7O2)·C8H8O2·2H2O, is comprised of a Zn2+ cation, two 2,2′-bipydine (bipy) ligands and one 3-methyl­benzoate anion (L −) together with one uncoordinating L − anion, one uncoordinating HL mol­ecule and two lattice water mol­ecules. The ZnII atom is coordinated by four N atoms of two bipy ligands and two O atoms from one L − ligand in a distorted octa­hedral geometry. Pairs of centrosymmetrically related complex mol­ecules form dimers via slipped π-stacking inter­actions between bipy ligands with an inter­planar distance of 3.470 (4) Å. The dimers are linked into supra­molecular chains along [111], via C—H⋯O hydrogen bonds. The uncoordinated L − anions, HL mol­ecules and water mol­ecules are connected with each other via O—H⋯O hydrogen bonds, forming chains between the metal complex chains and binding them together via C—H⋯O contacts. The resulting layers parallel to (010) are further assembled into a three-dimensional supra­molecular architecture through additional C—H⋯O inter­actions.