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Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
RESEARCH ARTICLE

Organolanthanoids. VI. Syntheses of cyclopentadienyllanthanoids by transmetallation reactions between thallous cyclopentadienides and lanthanoid elements

GB Deacon, AJ Koplick and TD Tuong

Australian Journal of Chemistry 37(3) 517 - 525
Published: 1984

Abstract

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

https://doi.org/10.1071/CH9840517

© CSIRO 1984

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