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Updated: Apr 6, 2026

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
Published on: April 19, 2019
Syntheses, structural characterisation and electronic structures of some simple acyclic amino carbene complexes
Samantha G Eaves1, Dmitry S Yufit, Brian W Skelton
1Department of Chemistry, Durham University, South Rd, Durham, DH13LE, UK. paul.low@uwa.edu.au.
Abstract:
Reactions of the vinylidene complexes [M([double bond, length as m-dash]C[double bond, length as m-dash]CH2)(PP)Cp']PF6 with NH3 readily afford the acyclic amino carbene complexes [M{C(Me)NH2}(PP)Cp']PF6 [M(PP)Cp' = Fe(dppe)Cp, Ru(dppe)Cp, Ru(PPh3)2Cp, Ru(dppe)Cp*]. Crystallographic, spectroscopic and computational data support a description of these complexes in terms of a M-{C(Me)[double bond, length as m-dash]N(+)H2} mesomeric form, and simple σ-coordination of the singlet acyclic amino carbene.
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