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Zeitschrift für Naturforschung B

A Journal of Chemical Sciences

12 Issues per year


IMPACT FACTOR 2016: 0.631

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1865-7117
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Volume 50, Issue 12 (Dec 1995)

Issues

Koordinationsverhalten des Pentafluorphenylxenonium Salzes [C6F5Xe]+[AsF6]- gegenüber Pyridinen unterschiedlicher Basizität / Co-ordinative Behaviour of the Pentafluorophenylxenonium Salt [C6F5Xe]+[AsF6]- to Pyridines of Different Basicity

Hermann Josef Frohn
  • Fachgebiet Anorganische Chemie der Gerhard-Mercator-Universität Duisburg, Lotharstraße 1, D -4 7048 Duisburg
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Thorsten Schroer
  • Fachgebiet Anorganische Chemie der Gerhard-Mercator-Universität Duisburg, Lotharstraße 1, D -4 7048 Duisburg
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Gerald Henkel
  • Fachgebiet Anorganische Chemie der Gerhard-Mercator-Universität Duisburg, Lotharstraße 1, D -4 7048 Duisburg
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2014-06-02 | DOI: https://doi.org/10.1515/znb-1995-1206

The arylxenonium cation in the salt [C6F5Xe]+ [AsF6]- is isoelectronic to C6F5I, but coordinatively unsaturated with respect to N-bases like MeCN and pyridines. Co-ordination of strongly basic pyridines causes weakening of the Xe-C bond and C6F1 radical formation. The thermal decomposition of pyridine co-ordinated arylxenonium cations gives three groups of products: C-pentafluorophenylated pyridines, N-pentafluorophenylated pyridinium and N-protonated pyridinium salts. The co-ordination ability of the different pyridines shows a good correlation (C6F5 group) with the 19F NMR shift values of the p-F atom and the coupling constants 3J (19F-129Xe). An X-ray structure analysis was performed for the co-ordination product [C6F5Xe · 2,6-C5H3F2N ]+ [AsF6]- and for [C6F5-C5H5N]+ [(C6F5)2BF2]-, which was obtained by thermolysis of the corresponding adduct.

Keywords: Arylxenonium Cation; N-Base Co-ordination; Asymmetrie Hypervalent Bonding on Xe(II); Pentafluorophenylation of Pyridines; Structural and 19F NMR Investigations

About the article

Received: 1995-04-05

Published Online: 2014-06-02

Published in Print: 1995-12-01


Citation Information: Zeitschrift für Naturforschung B, ISSN (Online) 1865-7117, ISSN (Print) 0932-0776, DOI: https://doi.org/10.1515/znb-1995-1206.

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© 1946 – 2014: Verlag der Zeitschrift für Naturforschung. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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