Organolanthanoids. VI Syntheses of Cyclopentadienyllanthanoids by Transmetallation Reactions Between Thallous Cyclopentadienides and Lanthanoid Elements

Glen B. Deacon, Andrew J Koplick, Tran D. Tuong

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Abstract

Cyclopentadienyllanthanoids (C5H5)3M(thf) (M = Ce, Nd, Sm, Gd or Er; thf = tetrahydrofuran), (C5H5)3M (M = Er or Yb), (MeC5H4)3M (M = Nd, Sm or Gd), (C5H5)2Yb, (C5H5)2Yb(dme) (dme = 1, 2-dimethoxyethane), and (MeC5H4)2Yb(thf), have been synthesized in satisfactory-to-good yield by reaction of the lanthanoid elements with the thallous cyclopentadienides (RC5H4)Tl (R = H or Me) in tetrahydrofuran or 1, 2-dimethoxyethane. The outcome of the reaction of ytterbium with thallous cyclopentadienide [(C5H5)nYb; n = 2 or 3] depends on the stoichiometry; it has been shown that (C5H5)3Yb is reduced by ytterbium metal to (C5H5)2Yb and that the divalent compound is oxidized to (C5H5)3Yb by thallous cyclopentadienide. Addition of mercury metal aids initiation of transmetallation, but it is not essential for reaction to occur.

Original languageEnglish
Pages (from-to)517-525
Number of pages9
JournalAustralian Journal of Chemistry
Volume37
Issue number3
DOIs
Publication statusPublished - 1984

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