title: The Lightest Element Phosphoranylidene: NHC-Supported Cyclic Borylidene-Phosphorane with Significant B=P Character.
abstract: A borylidene-phosphorane, the lightest phosphoranylidene, which is stabilized by an N-heterocyclic carbene ligand, was synthesized and fully characterized. Experimental electron density analysis and DFT calculations indicate an enhanced ylene character (rather than an ylide character) with an exceptionally strong B→P π-back bonding related to the less electronegative boron compared to phosphorus.
authors.affiliation: Université de Toulouse, UPS, CNRS, LHFA UMR 5069, 118 route de Narbonne, 31062, Toulouse, France.
authors.forename: Alfredo
authors.initials: A
authors.lastname: Rosas-Sánchez
authors.affiliation: Université de Toulouse, UPS, CNRS, LHFA UMR 5069, 118 route de Narbonne, 31062, Toulouse, France.
authors.forename: Isabel
authors.initials: I
authors.lastname: Alvarado-Beltran
authors.affiliation: Université de Toulouse, UPS, CNRS, LHFA UMR 5069, 118 route de Narbonne, 31062, Toulouse, France.
authors.forename: Antoine
authors.initials: A
authors.lastname: Baceiredo
authors.affiliation: Materials Characterization Support Unit, RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Hashizume
authors.affiliation: Université de Toulouse, UPS, CNRS, ICT FR2599, 118 route de Narbonne, 31062, Toulouse, France.
authors.forename: Nathalie
authors.initials: N
authors.lastname: Saffon-Merceron
authors.affiliation: Departament de Química, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain.
authors.forename: Vicenç
authors.initials: V
authors.lastname: Branchadell
authors.affiliation: Université de Toulouse, UPS, CNRS, LHFA UMR 5069, 118 route de Narbonne, 31062, Toulouse, France.
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Kato
keywords: N-heterocyclic carbenes; bora-ylides; borylenes; phosphines; ylides