Tetrakis[mu-4-(dimethylamino)benzoato-kappa O-2:O ']bis[(N,N-diethylnicotinamide-kappa N-1)zinc(II)]

Abstract

The title molecule, [Zn-2(C9H10NO2)(4)(C10H14N2O)(2)], is a centrosymmetric binuclear complex, with Zn atoms [Zn center dot center dot center dot Zn ' = 2.8927 (4) angstrom] bridged by four carboxylate groups from the dimethylaminobenzoate (DMAB) ligands. The four carboxyl O atoms around the Zn atom form a distorted square-planar arrangement; the distorted square-pyramidal coordination geometry is completed by the pyridine N atom of the N,N-diethylnicotinamide (DENA) ligand. The Zn atom is displaced by 0.3326 (2) angstrom from the plane of the four O atoms, with an average Zn-O distance of 2.0416 (12) angstrom. The dihedral angles between the carboxylate groups and the adjacent benzene rings are 5.31 (8) and 11.00 (9)degrees, while the pyridine ring is oriented at dihedral angles of 66.26 (6) and 37.88 (7)degrees with respect to the benzene rings. Weak intramolecular C-H center dot center dot center dot O and intermolecular C-H center dot center dot center dot pi interactions are present.