Syntheses, structural characterisation and electronic structures of some simple acyclic amino carbene complexes

Abstract

Reactions of the vinylidene complexes [M(CCH 2)(PP)Cp′]PF 6 with NH 3 readily afford the acyclic amino carbene complexes [M{C(Me)NH 2 }(PP)Cp′]PF 6 [M(PP)Cp′ = Fe(dppe)Cp, Ru(dppe)Cp, Ru(PPh 3) 2 Cp, Ru(dppe)Cp∗]. Crystallographic, spectroscopic and computational data support a description of these complexes in terms of a M-{C(Me)N + H 2 } mesomeric form, and simple σ-coordination of the singlet acyclic amino carbene.