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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 71, Issue 10 (Oct 2016)

Issues

Synthesis of copper(II) and gold(III) bis(NHC)-pincer complexes

Eva Jürgens
  • Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Oliver Back
  • Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg Universität Mainz, Duesbergweg 10–14, D-55128 Mainz, Germany
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Johannes J. Mayer
  • Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Katja Heinze
  • Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg Universität Mainz, Duesbergweg 10–14, D-55128 Mainz, Germany
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  • De Gruyter OnlineGoogle Scholar
/ Doris Kunz
  • Corresponding author
  • Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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  • Other articles by this author:
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Published Online: 2016-09-22 | DOI: https://doi.org/10.1515/znb-2016-0158

Abstract

CuII and AuIII chlorido complexes bearing the bis(NHC) carbazolide pincer ligand (bimca) were synthesized by transmetallation from the respective lithium complex [Li(bimca)] (NHC=N-heterocyclic carbene). In the case of copper, two different molecular structures were obtained depending on the copper source. With Cu(II) chloride the paramagnetic mononuclear [Cu(bimca)Cl] complex is formed and has been characterized by EPR spectroscopy and X-ray structure analysis, while copper(I) chloride leads under oxidation to a dinuclear structure in which two cationic [CuII(bimca)] moieties are bridged by one chlorido ligand. The positive charge is compensated by the [CuCl2] counter ion, as proven by X-ray structure analysis. Transmetallation of [Li(bimca)] with AuCl3 leads to the [Au(bimca)Cl]+ complex with a tetrachloridoaurate counter ion.

Keywords: copper(II); gold(III); N-heterocyclic carbene; pincer ligand

Dedicated to: Professor Gerhard Erker on the occasion of his 70th birthday.

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About the article

Received: 2016-07-12

Accepted: 2016-07-26

Published Online: 2016-09-22

Published in Print: 2016-10-01


Citation Information: Zeitschrift für Naturforschung B, ISSN (Online) 1865-7117, ISSN (Print) 0932-0776, DOI: https://doi.org/10.1515/znb-2016-0158.

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