Organolanthanoids XVIII. The synthesis and X-ray crystal structure of di[η-chlorobis(diphenylphosphino-η5-cyclopentadienyl)ytterbium(III)]

G. B. Deacon, G. D. Fallon, C. M. Forsyth

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Abstract

Reaction of the divalent phosphinoytterbocene Yb(C5H4PPh2)2(THF)(THF = tetrahydrofuran) with mercuric chloride in THF or toluene yields mercury metal and the lanthanoid(III) complex Yb(C5H4PPh2)2Cl. An X-ray crystal structure of the compound revealed the presence of two independent chloride-bridged dimers (one centrosymmetric, one non-centrosymmetric, in a ratio of 1:2) with uncoordinated Ph 2P groups and pseudo-tetrahedral eight coordination (two η5-C5H4PPh2 and two η-Cl ligands) at ytterbium. The dimers differ in the arrangement (syn, anti) of the Ph2P groups. Solution spectroscopic data suggest that there is P-Yb bonding in toluene.

Original languageEnglish
Pages (from-to)183-190
Number of pages8
JournalJournal of Organometallic Chemistry
Volume462
Issue number1-2
DOIs
Publication statusPublished - 14 Dec 1993

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