Preparation of a super bulky silver N-heterocyclic carbene complex

Abstract

The preparation of a 1,3-bis(2,6-terphenyl)imidazolium salt and the first coordination complex containing a 1,3-bis(2,6-terphenyl)imidazol-2-ylidene NHC (IDitop) is reported; comparison of the steric parameters of IDitop with commonly used bulky NHCs such as 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (IDip) indicates a significantly greater cone angle for the former, and the molecular structures of [AgCl(IDitop)], the parent diazabutadiene of IDitop and the 1,3-bis(2-phenylphenyl)imidazol-2-ylidene (IBp) complex [AgCl(IBp)] are reported.