Diaqua­Bis­(N,N-Diethyl­Nicotinamide-Κn 1)Bis­(4-Formyl­Benzoato-Κo 1)Zinc

Abstract

In the title complex, [Zn(C8H5O3)2(C10H14N2O)2(H2O)2], the ZnII cation is located on an inversion center and is coordinated by two 4-formyl­benzoate anions, two N,N-diethyl­nicotinamide (DENA) ligands and two water mol­ecules. The four O atoms in the equatorial plane around the ZnII cation form a slightly distorted square-planar arrangement, while the slightly distorted octa­hedral coordination is completed by the two N atoms of the DENA ligands in the axial positions. The dihedral angle between the carboxyl­ate group and the adjacent benzene ring is 2.96 (11)°, while the pyridine ring and the benzene ring are oriented at a dihedral angle of 79.26 (4)°. The coordinating water mol­ecule links with the carboxyl­ate group via an intra­molecular O—H⋯O hydrogen bond. In the crystal, O—H⋯O and weak C—H⋯O hydrogen bonds link the mol­ecules into a three-dimensional supra­molecular network. A π–π contact between the parallel pyridine rings of adjacent mol­ecules may further stabilize the crystal structure [centroid–centroid distance = 3.5654 (8) Å].