title: 2-Indenylidene pincer complexes of zirconium and palladium.
abstract: [IndH(2)(Ph(2)P=X)(2)] derivatives (1, X = NMes; 4, X = S) react with [Zr(NMe(2))(4)] and [PdCl(2)(cod)] to afford the complexes {[Ind(Ph(2)PNMes)(2)]Zr(NMe(2))(2)} (3), {[Ind(Ph(2)PS)(2)]Zr(NMe(2))(2)} (5), and {[Ind(Ph(2)PS)(2)]Pd(HNc-Hex(2))} (7). The ability of the phosphazene and thiophosphinoyl side arms to support the coordination of the indenyl ring as 2-indenylidene was evidenced by NMR spectroscopy and X-ray diffraction studies. Analysis of the bonding situation by density functional theory calculations revealed a strong sigma interaction but a negligible (if any) pi interaction between C2 and the metal.
authors.affiliation: Université de Toulouse, UPS, Laboratoire Hétérochimie Fondamentale et Appliquée, 118 route de Narbonne, F-31062 Toulouse, France.
authors.forename: Pascal
authors.initials: P
authors.lastname: Oulié
authors.forename: Noel
authors.initials: N
authors.lastname: Nebra
authors.forename: Nathalie
authors.initials: N
authors.lastname: Saffon
authors.forename: Laurent
authors.initials: L
authors.lastname: Maron
authors.forename: Blanca
authors.initials: B
authors.lastname: Martin-Vaca
authors.forename: Didier
authors.initials: D
authors.lastname: Bourissou