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Komplexe mit Metall‐Phosphor‐Dreifachbindungen als mögliche Intermediate der Umsetzungen von Chlorophosphiniden‐Komplexen mit Metallaten verschiedener Übergangsmetalle
Author(s) -
Scheer Manfred,
Schuster Kay,
Krug André,
Hartung Helmut
Publication year - 1996
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19961290816
Subject(s) - chemistry , metal , stereochemistry , crystallography , transition metal , crystal structure , medicinal chemistry , catalysis , organic chemistry , biochemistry
Complexes with Metal‐Phosphorus Triple Bonds as Possible Intermediates in the Reactions between Chlorophosphinidenes and Metalates of Various Transition Metals The reaction of [{M′(CO) 5 } 2 PCl] (M′ = Cr, W) with various metalates ([Cp′Mo(CO) 3 ] − , [Cp * Ni(CO)] − , [Cr 2 (CO) 10 ] 2− ) yields the M 2 P 2 tetrahedral complexes [(ML n ) 2 (μ,η 2 ‐ P 2 ){M′(CO) 5 } 2 ] (ML n = Cp*Ni, M′= Cr ( 1 ), W ( 2 ); ML n = Cp′Mo(CO) 2 , M′ = Cr ( 4 ); Cp* = η 5 ‐C 5 Me 5 , Cp* = η 5 C 5 H 3 t Bu 2 ) and the cyclo ‐P 4 compound [{Cr(CO) 4 }(η 4 ‐P 4 ){Cr(CO) 5 } 4 ] 6 . As side products the distorted prismane [(Cp*Ni) 2 {μ 4 ,η 4 ‐(P 2 ‐O‐P 2 )}{W(CO) 5 } 2 ] 3 and the diphosphino‐methanone complex [{Cp′Mo(CO) 2 } 2 {μ 4 η 2 ‐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 [L n MP→M′L n ].