title: Side-on coordination of a P-P bond in heterobinuclear tetraphosphorus complexes with a [Si(mu,eta(2:2)-P(4))Ni] core and nickel(I) centers.
abstract: The synthesis and characterization of the first heterobinuclear tetraphosphorus complexes 3a and 3b with a [Si(mu,eta(2:2)-P(4))Ni] core are reported. The latter result from conversion of the silylene-activated P(4) ligand LSiP(4) (1; L = CH[(C horizontal lineCH(2))CMe][N(2,6-(i)Pr(2)C(6)H(3))](2)) with the beta-diketiminatonickel(I) complexes [(L'Ni)(2).toluene] (L' = CH[CMeN(2,6-iPr(2)C(6)H(3))](2)) and [(L''Ni)(2).toluene] (L'' = CH[CMeN(2,6-Et(2)C(6)H(3))](2)), respectively. Unexpectedly, the complexes 3a and 3b feature a [Si(mu,eta(2:2)-P(4))Ni] core with nickel(I) centers as shown by X-ray diffraction analysis, electron paramagnetic resonance, and magnetic measurements. The latter prove that the products are paramagnetic both in the solid state and in solution because of the presence of tetrahedral nickel(I) sites.
authors: Institut für Chemie, Metallorganik und Anorganische Materialien, Technische Universität Berlin, Strasse des 17 Juni 135, Sekr. C2, D-10623 Berlin, Germany.
authors: Yun
authors: Y
authors: Xiong
authors: Shenglai
authors: S
authors: Yao
authors: Eckhard
authors: E
authors: Bill
authors: Matthias
authors: M
authors: Driess
mesh_terms: D004578:Electron Spin Resonance Spectroscopy; D009532:Nickel / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D010758:Phosphorus / Q000737:chemistry*; D012825:Silicon / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D010758:Phosphorus; D009532:Nickel; D012825:Silicon