Synthesis and crystal structure of an organic-inorganic complex [Cu(DMF) 3(H 2O) 2] 2[SiMo 12O 40]·2H 2O

Abstract

The synthesis and crystal structure of an polyoxometalate-based organic-inorganic complex [Cu(DMF) 3(H 2O) 2] 2[SiMo 12O 40]·2H 2O (DMF = N, N-dimethyl formamide) is described in this article. It was characterized using elemental analysis, thermal analysis, infrared, ultraviolet, and electron spin resonance spectroscopic studies. The X-ray crystallography analysis showed that the copper centers are pentacoordinated to show the square pyramidal geometry. and the polyanion [SiMo 12O 40] 4- which is semi-coordinated to the copper(II) centers prevents the existence of a sixth ligand. In addition, the intracationic hydrogen interaction enhanced the stability of the copper coordination cation.