Synthesis, characterization and electrochemical investigation of a new inorganic–organic hybrid compound constructed by Keggin-type polyoxometalate and cyanoguanidine.

Abstract: An inorganic–organic hybrid complex [HDCD]3[PW12O40]·3H2O (1) (DCD = 2-cyanoguanidine) has been synthesized from the reaction of Keggin polyanion and cyanoguanidine (C2N4H4) under mild condition, and characterized by using elemental analysis, infrared spectrum, thermogravimatric analysis and single crystal X-ray diffraction. X-ray crystallography reveals that 1 displays an inorganic–organic hybrid frameworks constructed by [PW12O40]3− Keggin-type polyoxoanion and three {(HDCD)}+ monocationic hydrogen-bonded units. The electrochemical behavior and electrocatalysis of 1 have been studied in detail. [Copyright &y& Elsevier]