Zeise's salt



    Zeise's salt is the square planar geometry.

History

Zeise's salt was one of the first Justus von Liebig, an influential chemist of that era, often criticised Zeise's proposal, but Zeise's theories were decisively supported in 1868 when Birnbaum prepared the complex using ethylene.[2][3]

Zeise's salt received a great deal of attention during the second half of the 19th century because chemists could not properly explain the x-ray diffraction in the 20th century. [4]

Zeise's salt stimulated much scientific research in the field of Dewar-Chatt-Duncanson model explains how the metal is coordinated to the double bond.

Related compounds

  • Zeise's dimer [{(η2-C2H4)PtCl2}2], derived from Zeise's salt by elimination of KCl followed by dimerisation.
  • "COD-platinum dichloride," (cyclooctadiene)PtCl2, derived from 1,5-cyclooctadiene, is a common platinum(II) alkene complex.

Many other ethylene complexes have been prepared. For example, ethylenebis(triphenylphosphine)platinum(0), [(C6H5)3P]2Pt(H2C=CH2), wherein the platinum is three-coordinate and zero-valent (Zeise's salt is a derivative of platinum(II)).

Structure

In Zeise's salt and related compounds, the alkene rotates about the metal-alkene bond with a modest CpRh(C2H4)2, are, however, suitable for analysis of the rotational barriers associated with the metal-ethylene bond.[5]

References

  1. ^ Zeise, W. C. “Von der Wirkung zwischen PIatinchlorid und Alkohol, und von den dabei entstehenden neuen Substanzen ; “Annalen der Physik und Chemie 1831, Volume 97, pages 497-541.
  2. ^ R. A. Love, T. F. Koetzle, G. J. B. Williams, L. C. Andrews, R. Bau (1975). "Neutron diffraction study of the structure of Zeise's salt, KPtCl3•C2H4•H2O". Inorganic Chemistry 14 (11): 2653 - 2657. doi:10.1021/ic50153a012.
  3. ^ L. B. Hunt (1984). "The First Organometallic Compounds: WILLIAM CHRISTOPHER ZEISE AND HIS PLATINUM COMPLEXES". Platinum Metals Review 28 (2): 76-83.
  4. ^ M. Black, R. H. B. Mais and P. G. Owston (1969). "The crystal and molecular structure of Zeise's salt, KPtCl3•C2H4•H2O". Acta Crystallographica Section B B25: 1753-1759. doi:10.1107/S0567740869004699.
  5. ^ Elschenbroich, C. ”Organometallics : A Concise Introduction” (2006) Wiley-VCH: Weinheim. ISBN 978-3-29390-6
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Zeise's_salt". A list of authors is available in Wikipedia.