Synthesis and structural characterisation of stable pyridine- and phosphine-functionalised N-heterocyclic carbenes
Abstract
Stable, uncoordinated {1-[2-(6-trimethylsilyl)pyridyl]-3-[(2,6-diisopropyl)phenyl]imidazol-2-ylidene}, I, and {1-[β-(diphenylphosphino)ethyl]-3-[(2,6-diisopropyl)phenyl]imidazol-2-ylidene}, II, have been synthesised; in the solid state they adopt a conformation with the lone pairs in a mutually anti arrangement.