Tetra­Kis(Μ-4-Methyl­Benzoato-Κ2 O:O′)Bis­[(N,N-Diethyl­Nicotinamide-Κn 1)Zinc(II)]

Abstract

In the centrosymmetric binuclear title complex, [Zn2(C8H7O2)4(C10H14N2O)2], the Zn atoms [Zn⋯Zn′ = 2.9494 (3) Å] are bridged by four 4-methyl­benzoate (PMB) anions. The four nearest O atoms around each ZnII ion form a distorted square-planar arrangement, the octahedral coordin­ation being completed by the pyridine N atom of the N,N-diethyl­nicotinamide (DENA) ligand. Each ZnII ion is displaced by 0.3530 (1) Å from the plane of the four O atoms. The dihedral angles between carboxyl­ate groups and their adjacent benzene rings are 5.88 (10) and 11.89 (9)°, while the benzene rings are oriented at a dihedral angle of 75.19 (4)°. The pyridine ring is oriented at dihedral angles of 38.28 (4) and 49.17 (4)° with respect to the benzene rings. In the crystal structure, weak inter­molecular C—H⋯O hydrogen bonds link the mol­ecules into a three-dimensional network. π–π contacts between parallel benzene rings [centroid–centroid distance = 3.8388 (8) Å] and between parallel pyridine rings [centroid–centroid distance = 3.4855 (7) Å] may further stabilize the crystal structure.