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Synlett 1991; 1991(10): 745-746
DOI: 10.1055/s-1991-34768
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Synthesis of Diphosphametallocene Derivatives of Divalent Lanthanides. Phosphorus-Phosphorus Bond Cleavage by Metallic Ytterbium and Samarium

François Nief* , François Mathey
  • *Laboratoire de Chimie du Phosphore et des Métaux de Transition, CNRS - UM 13, DCPH, Ecole Polytechnique, F-91128 Palaiseau Cedex, France
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Publication Date:
13 March 2002 (online)

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Bis(η5-2,3,4,5-tetramethylphospholyl)bis(tetrahydrofuran)metal complexes [(η5-C4Me4P)2M(THF)2; M = Yb, Sm] were prepared, not only by reaction of K(C4Me4P) with YbI2(THF)2 or SmI2(THF)2 [similarly to the known synthesis of Cp* 2M from KCp* and MI2(THF)2], but also by direct oxidative addition of these lanthanides as metallic powders across the P-P bond of octamethyl-1,1′-biphospholyl, C4Me4P-PC4Me4, in THF at room temperature.