title: [3+2] Fragmentation of an [RP(5)Cl](+) cage cation induced by an N-heterocyclic carbene.
abstract: The cage compound [DippP5 Cl][GaCl4 ] (Dipp=2,6-diisopropylphenyl) reacts with an NHC (N-heterocyclic carbene) by an unprecedented [3+2] fragmentation of the P5 (+) core. This yields an imidazoliumyl-substituted P3 species featuring a triphosphaallyl anion motif and a neutral P2 compound. The mechanism of the fragmentation reaction was elucidated by means of experimental and quantum chemical methods.
authors.affiliation: Professur für Anorganische Koordinationschemie, TU Dresden, 01062 Dresden (Germany).
authors.forename: Michael H
authors.initials: MH
authors.lastname: Holthausen
authors.forename: Sabrina K
authors.initials: SK
authors.lastname: Surmiak
authors.forename: Paul
authors.initials: P
authors.lastname: Jerabek
authors.forename: Gernot
authors.initials: G
authors.lastname: Frenking
authors.forename: Jan J
authors.initials: JJ
authors.lastname: Weigand
keywords: DFT calculations; carbenes; phosphorus cations; structure elucidation; triphosphaallyl anion