Synthesis and Electrochemical Behavior of Metal Carbonyl Isocyanoferrocene Compounds [M(CO)_6‐n(C≡NFc)_n] (M=Cr, Mo, W; n=1, 2, 3)

Abstract The synthesis of [M(CO) 6‐n (C≡NFc) n ] (n=1: M=Cr, 3 a ; M=Mo, b M=W, c . n=2: 5 n=3: 6 Fc=Fe( η −C H 4 )( )) by the reaction (thf)] (M=Cr, 1 M=W ) (synthesis – ), [Mo(CO) (nbd)] ( or with FcN≡C 2 is discussed. IR studies confirm formation cis ‐[Mo(CO) and mer ). electrochemical behavior , reported. Compound shows reversible Fc redox event at E ° ′=355 mV (Δ p =60 mV). Upon complexation to M(CO) this wave slightly shifted °′=335 345 340 showing that in ligand more easy oxidize. substitution further CO ligands as characteristic for influences respective events insignificantly. Reversible oxidation Cr occurs 1045 mV), while : 1170 mV, 1290 mV) irreversible oxidations were observed. In addition, situ spectroelectrochemical carried out on results confirmed DFT calculations.