Synthesis, crystal structure and electrochemical properties of poly(cadmium 1,1′-ferrocenediyl-bis(H-phosphinate))

Abstract

The new redox active coordination polymer [Cd(H2O)2(fc(PHOO)2)·2H2O]n (fc = 1,1′-ferrocenediyl) was synthesized and structurally characterized by single-crystal X-ray diffraction. In this compound cadmium atoms are bound by phosphinate fragments to give infinite chains, the latter are interconnected by ferrocene groups to form 2D coordination polymer. Electrochemical properties of CP were investigated. It’s found that Cd-polymer is harder to oxidize than its isostructural cobalt analogue. This means that increase in the length of the M − O bond in coordination polymer, oxidation becomes harder.