Abstract
AbstractThe complex compound bis(2,4-dichlorobenzoato-O)bis(thiourea-S)zinc(II) has been prepared and characterized by elemental analysis, thermal analysis, IR spectroscopy, and single-crystal X-ray analysis. During the thermal decomposition in inert atmosphere, thiourea, dichlorobenzene and carbon dioxide are evolved. The solid intermediate was confirmed by IR spectroscopy, and the final product of the thermal decomposition was proven by powder diffractometry. The coordination environment of the zinc(II) atom is built up by two sulphur atoms from two thiourea ligands and two oxygen atoms from two monodentate 2,4-dichlorobenzoate anions to form a distorted tetrahedral coordination around the zinc(II) atom (chromophore ZnO2S2). The mode of the carboxylate binding was assigned from the IR spectrum using the magnitude of the separation between the carboxylate stretches (Δ), and it is in good agreement with the crystal structure. The structure is also stabilized with hydrogen bonds of N–H···O and N–H···Cl type.
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