Mono- and di-bridged heterobimetallic systems from group 5 hydride phosphido and hydride phosphino metalloligands. Crystal structure of Cp2Ta(H)(mu-H)(mu-PMe2)Cr(CO)(4)

The trihydrides Cp2MH3 (M=Nb, Ta) react with chlorophosphines PR2Cl (R=Me, Ph) affording phosphonium salts [Cp2MH2(PR2H)](+), Cl- (2 (a, b) 2' (a, b)). Depending on the metal (Nb or Ta) and on the nature of the phosphine substituent (Me or Ph), deprotonation of these salts leads to hydride phos...

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Bibliographic Details
Published inJournal of organometallic chemistry Vol. 547; no. 1; pp. 141 - 147
Main Authors Lavastre, O, Bonnet, G, Boni, G, Kubicki, MM, Moise, C
Format Journal Article
LanguageEnglish
Published LAUSANNE Elsevier 20.11.1997
Subjects
Chemistry
Chemistry, Inorganic & Nuclear
Chemistry, Organic
Physical Sciences
Science & Technology
TANTALOCENE
H BOND
REACTIVITY
heterobimetallic complexes
PHOSPHENIUM COMPLEXES
TA
NIOBOCENE
METALLOPHOSPHINES
hydride bridge
METAL-CARBONYLS
LIGANDS
niobium
phosphido bridge
tantalum
DERIVATIVES
metalloligand
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Summary:The trihydrides Cp2MH3 (M=Nb, Ta) react with chlorophosphines PR2Cl (R=Me, Ph) affording phosphonium salts [Cp2MH2(PR2H)](+), Cl- (2 (a, b) 2' (a, b)). Depending on the metal (Nb or Ta) and on the nature of the phosphine substituent (Me or Ph), deprotonation of these salts leads to hydride phosphino Cp2MH(PR2H) (3 (a, b) 3'a) or hydride phosphido Cp2TaH2(PPh2) (4'b) metalloligands. These two kinds of complexes are able to bind [M'(CO)(5)] or [M'(CO)(4)] (M' = Cr, Mo, W) organometallic fragments to give mono-or di-bridged heterobimetallic systems. The crystallographic analysis of Cp2Ta(H)(mu-H)(mu-PMe2)Cr(CO)(4) (7'aCr) is reported and discussed. (C) 1997 Elsevier Science S.A.
ISSN:0022-328X
DOI:10.1016/S0022-328X(97)00219-2