Komplexe mit Metall‐Phosphor‐Dreifachbindungen als mögliche Intermediate der Umsetzungen von Chlorophosphiniden‐Komplexen mit Metallaten verschiedener Übergangsmetalle

Abstract

Complexes with Metal‐Phosphorus Triple Bonds as Possible Intermediates in the Reactions between Chlorophosphinidenes and Metalates of Various Transition MetalsThe reaction of [{M′(CO)5}2PCl] (M′ = Cr, W) with various metalates ([Cp′Mo(CO)3]−, [Cp * Ni(CO)]−, [Cr2(CO)10]2−) yields the M2P2 tetrahedral complexes [(MLn)2(μ,η2‐ P2){M′(CO)5}2] (MLn = Cp*Ni, M′= Cr (1), W (2); MLn = Cp′Mo(CO)2, M′ = Cr (4); Cp* = η5‐C5Me5, Cp* = η5C5H3tBu2) and the cyclo‐P4 compound [{Cr(CO)4}(η4‐P4){Cr(CO)5}4] 6. As side products the distorted prismane [(Cp*Ni)2{μ4,η4‐(P2‐O‐P2)}{W(CO)5}2] 3 and the diphosphino‐methanone complex [{Cp′Mo(CO)2}2{μ4η2‐PC(O)P}‐{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 phosphido intermediates of the type [LnMP→M′Ln].