New General Synthetic Strategy of Fulvalene Homodinuclear Zwitterions. Electrochemical Behavior of (η:5η5-(C5H3CO2Me)2)Mo2(CO)6R2 (R = I, Me)

The reaction of Li2[(η5:η5-(C5H3CO2Me)2)Mo2(CO)6] (from trans-(η5:η5-(C5H3CO2Me)2)Mo2(CO)6) (1) with MeI yields (η5:η5-(C5H3CO2Me)2)Mo2(CO)6Me2 (3). The reaction of cis-(η5:η5-(C5H3CO2Me)2)Mo2(CO)6 (2) with I2 leads to the formation of (η5:η5-(C5H3CO2Me)2)Mo2(CO)6I2 (4). The X-ray structure of 4 has been determined. The reactions of 1 with P-donor nucleophiles (PPhMe2, PPh2Me, P(n-Bu)3, and PMe3) and (η5:η5-(C10H8)M2(CO)6 (M = Mo and W) with …