title: Backbone tuning in indenylidene-ruthenium complexes bearing an unsaturated N-heterocyclic carbene.
abstract: The steric and electronic influence of backbone substitution in IMes-based (IMes = 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene) N-heterocyclic carbenes (NHC) was probed by synthesizing the [RhCl(CO)₂(NHC)] series of complexes to quantify experimentally the Tolman electronic parameter (electronic) and the percent buried volume (%V(bur), steric) parameters. The corresponding ruthenium-indenylidene complexes were also synthesized and tested in benchmark metathesis transformations to establish possible correlations between reactivity and NHC electronic and steric parameters.
authors.affiliation: EaStCHEM School of Chemistry, University of St Andrews, St Andrews KY16 9ST, United Kingdom. caub@st-andrews.ac.uk
authors.forename: César A
authors.initials: CA
authors.lastname: Urbina-Blanco
authors.forename: Xavier
authors.initials: X
authors.lastname: Bantreil
authors.forename: Hervé
authors.initials: H
authors.lastname: Clavier
authors.forename: Alexandra M Z
authors.initials: AM
authors.lastname: Slawin
authors.forename: Steven P
authors.initials: SP
authors.lastname: Nolan