ORGANOMETALLIC ELECTROCHEMISTRY .14. CONVERSION OF FORMAL PI ACCEPTORS TO PI DONORS

Infrared spectral data for a number of octahedral systems of the types LM(CO)5 (M = Cr, Mo, and W; L = pyridine and quinoline), L2M(CO)4 (M = Cr, Mo, and W; L2 = ethylenediamine, (pyridine)2, and bi pyridyl), (LM(CO)4)2 (M = Cr, Mo, and W; L = As(CH3)2 and P(CH3)2), and (LFe(CO)3)2 (L = SCH3, P(CH3)2, and As(CH3)2) before and after electrochemical reduction are presented. Force constants are calculated using the Cotton-Kraihanzel force field and the results discussed in terms of σ and π bonding. © 1969, American Chemical Society. All rights reserved.