Zinc halide complexes of thionicotinamide; crystal structure of dichlorido bis(thionicotinamide-κN)zinc(II)

Abstract

Zinc halide complexes of thionicotinamide (TNA) having the general formula [Zn(TNA)₂X₂] (X = Cl^–, Br^–, I^–) are prepared and characterized by thermal analysis, IR and NMR spectroscopy. The crystal structure of one of them, dichloridobis(thionicotinamide-κN)zinc(II), [Zn(TNA)₂Cl₂] (1), is determined using X-ray crystallography. In 1, the zinc atom is coordinated by two thionicotinamide ligands through nitrogen atoms and two chloride ions in a distorted tetrahedral coordination environment. The molecular structure of the complex is stabilized through intermolecular hydrogen bonding.