Synthesis, characterization, and reactivity of the neutral metal formyl (η 5-C 5Me 5)(CO) 2(PPh 3)MoCHO. A new route to monocationic secondary alkoxycarbene complexes [(η 5-C 5Me 5)(CO) 2(PPh 3)Mo(CHOE)] + X − (E = H, Me)

Abstract

(η 5-C 5Me 5)(CO) 2(PPh 3)MoCHO ( 2) one of the few isolated neutral metal formyls, reacts with the electrophilic reagents (CF 3COOH and CH 3SO 3F without disproportionation to give the secondary carbene complexes [(η 5-C 5Me 5)(CO) 2(PPh 3)Mo(CHOE)] + X − (E = H, X = CF 3COO ( 4); E = Me, X = PF 6 ( 5)).