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Issue 11, 2000
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Monocations of bismuth and indium in arene media: A spectroscopic and EXAFS investigation

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Abstract

The composition of In–GaCl3benzene and In–BiCl3–GaCl3benzene solutions was investigated by Raman, UV/Vis, 71Ga and 115In NMR spectroscopy as well as by X-ray absorption fine structure spectroscopy (EXAFS). Indium metal was found to be soluble in GaCl3benzene solution at room temperature through the reduction of GaIII, producing Ga+ and In+ species. The subvalent cations are likely to be stabilized by the interaction with benzene. The use of these solutions as reducing media for BiCl3 leads to the formation of Bi53+ polycations, with Bi+ as an intermediate product. No other subvalent bismuth species were detected. Multinuclear NMR experiments show that the reducing agent is Ga+ rather than In+. Indium K-edge EXAFS data recorded from solutions without and with subvalent bismuth species present show that In+ is co-ordinated by benzene (at about 2.9 Å) and chlorine atoms from chlorometalate anions (at about 3.3 Å) in a formal ratio of 1∶2. Electrospray mass spectroscopic data show that In+ is most likely co-ordinated by one arene molecule.

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Article information


Submitted
10 Feb 2000
Accepted
28 Mar 2000
First published
12 May 2000

J. Chem. Soc., Dalton Trans., 2000, 1777-1781
Article type
Paper

Monocations of bismuth and indium in arene media: A spectroscopic and EXAFS investigation

A. N. Kuznetsov, B. A. Popovkin, W. Henderson, M. J. Taylor and L. Bengtsson-Kloo, J. Chem. Soc., Dalton Trans., 2000, 1777
DOI: 10.1039/B001130O

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