Organolanthanides-XVI. Preparation and structure of bis(η5-cyclopentadienyl)bis(triphenylphosphine oxide)ytterbium(II)-the first X-ray crystal structure of a phosphine oxideorganolanthanide(II) complex

G. B. Deacon, B. M. Gatehouse, P. A. White

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Reaction of Cp2Yb(DME) (Cp = cyclopentadienyl; DME = 1,2-dimethoxyethane) with triphenylphosphine oxide yields Cp2Yb(OPPh3)2. The X-ray crystal structure shows eight-coordinate ytterbium with a pseudo-tetrahedral arrangement of two oxygen donor atoms and the centroids of two eclipsed η5-cyclopentadienyl rings. Surprisingly short Yb-O distances (2.30(2); 2.33(2) Å) and the absence of major inter-ligand contacts indicate an uncrowded arrangement.

Original languageEnglish
Pages (from-to)1983-1987
Number of pages5
Issue number15
Publication statusPublished - 1989

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