title: The striking stabilization of Ni0(eta6-arene) complexes by an ylide-like silylene ligand.
abstract: The right mix does the trick: Elusive {Ni(0)(eta(6)-arene)} moieties can be dramatically stabilized by the N-heterocyclic silylene ligand 1, which has a zwitterionic mesomeric structure. The sigma, pi-acid-base synergism between nickel and 1 explains the unexpectedly high stability of the new silylene complexes 2, which enables arene exchange studies at a Ni(0) center. Addition of B(C(6)F(5))(3) to 2 affords the zwitterionic silylene complex 3 (see scheme, R=2,6-iPr(2)C(6)H(3)).
authors.affiliation: Technische Universität Berlin, Institute of Chemistry: Metalorganics and Inorganic Materials, Strasse des 17. Juni 135, 10623 Berlin, Germany.
authors.forename: Antje
authors.initials: A
authors.lastname: Meltzer
authors.forename: Carsten
authors.initials: C
authors.lastname: Präsang
authors.forename: Carsten
authors.initials: C
authors.lastname: Milsmann
authors.forename: Matthias
authors.initials: M
authors.lastname: Driess