Addition of Stabilized Carbanions to Cationic (η6-Arene)tricarbonylmanganese Complexes: Syntheses of Homo (Mn–Mn) and Hetero (Mn–Cr) Dinuclear Complexes

Abstract

The reaction of secondary α-cyano or α-sulfonyl carbanions with cationic (η6-arene)tricarbonylmanganese complexes affords neutral mono- and dinuclear tricarbonyl(η5-cyclohexadienyl)manganese complexes. The X-ray analyses of three (η5-cyclohexadienyl)Mn complexes (two mononuclear and one dinuclear) obtained by addition of α-cyano carbanion to cationic (η6-arene)manganese complexes are reported. The addition of benzylic carbanions of (η6-arene)tricarbonylchromium complexes to cationic (η6-arene)manganese complexes gives rise to the formation of the corresponding heterodinuclear [(η5-cyclohexadienyl)manganese–(η6-arene)chromium] complexes.