181534-89-4Relevant academic research and scientific papers
[Cr(CO)5PCl3] - A starting material for phosphorus-rich Px ligand complexes
Scheer, Manfred,Schuster, Kay,Krug, Andre,Hartung, Helmut
, p. 1299 - 1304 (2007/10/03)
[Cr(CO)5PCI3] reacts with different metallates K[CpxMo(CO)3] [Cpx = η5-C5H4tBu (Cp′), η5-C5H3tBu2-1,3 (Cp″)], K[Cp″Fe(CO)2], K[Cp′Cr(CO)3], K[CpNi (CO)] and Na2[Cr2(CO)10] at -78 °C in THF to yield various P2, cycloP3 and cycto-P5 ligand complexes of the formulae [Cp′-Mo(CO)2(η3-P3)] (1a), [Cp″Mo(CO)2(η3-P3)] (1b), [{Cp′Mo-(CO)2)2(μ,η2-P 2)] (2a), [{Cp″Mo(CO)2)2(μ,η2-P 2)] (2b), [Cp″Fe(η5-P5)] (3), [(Cp′Cr)2(μ,η5-P5)] (4), [|Cp′Cr(CO)2)2-(μ,η2-P 2)1 (5), [(CpNi)2(μ,η2-P 2)(Cr(CO)5)2 (6), [{(CO)5Cr)Cl2PPCl2{Cr(CO)5)] (7) and [(Cr(CO)5}2PCl] (8). Comprehensive studies of the reaction pathway leading to formation of the cyclo-P3 product la give strong indications that a sequence involving metal-halogen exchange and stepwise P-P bond formation takes place, proceeding via [{(CO)5Cr)Cl2PPCl2{Cr(CO)5)] (7) and the cydo-P3 precursor compound [(Cp′Mo(CO)3){Cp′Mo(CO)2) 2(Cr(CO)5)(μ,η3:1:1 P3)] (9). The latter two complexes have been isolated and structurally characterized. VCH Verlagsgescllschaft mbH,.
Complexes with metal-phosphorus triple bonds as possible intermediates in the reactions between chlorophosphinidenes and metalates of various transition metals
Scheer, Manfred,Schuster, Kay,Krug, Andre,Hartung, Helmut
, p. 973 - 979 (2007/10/03)
The reaction of [{M′(CO)5}2PCl] (M′ = Cr, W) with various metalates ([Cp′'Mo(CO)3r, [Cp*Ni(CO)]-, [Cr2(CO)10]2-) yields the M2P2 tetrahedral complexes [(MLn)2(,rpP2){M′(CO)5} 2] (MLn= Cp'Ni, M'= Cr (1), W (2); MLn = Cp′Mo(CO)2, M′ = Cr (4); Cp" = r5-C5Mes, Cp′ = ifC5H3tBu2) and the cydo-P4 compound [{Cr(CO)4(TfP4S]Cr(CO)3)4] 6. As side products the distorted prismane [(Cp*Ni;2μ4,]4-(P2-O-P 2)H(CO)5}2] 3 and the diphosphinomethanone complex [{Cp′Mo{CO)22]2{μ 4,η2 [Cr(CO)5}2] 5 are formed. The complexes are characterised by NMR, IR, MS, and X-ray structure analysis (1-5). Studying the reaction pathway provided evidence of phosphide intermediates of the type [LnM=P→M′Ln]. VCH Verlagsgeselischaft mbH, 1996.
