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Synthesis of a ‘4+1’ Re(V) complex from Re(III), and its disproportionation to Re(IV) and Re(VII)

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Author(s): P. Mayer | N.C. Yumata | T.I.A. Gerber | A. Abrahams

Journal: Bulletin of the Chemical Society of Ethiopia
ISSN 1011-3924

Volume: 24;
Issue: 3;
Start page: 411;
Date: 2010;
Original page

Keywords: Oxidation | Rhenium(III) | Oxorhenium(V) | Disproportionation | X-ray structures

ABSTRACT
The distorted octahedral oxorhenium(V) complex [ReOCl(had)] (1) (H2had = N,N-bis(2-hydroxybenzyl)-2-(2-aminoethyl)dimethylamine) was prepared from the oxidation of [ReCl3 (MeCN)(PPh3)2] by dioxygen in the presence of H2 had in ethanol. This reaction was done under reflux conditions for a relatively short reaction time of an hour. However, increasing the reaction period to seven days led to the disproportionation of 1 to [ReIVCl(had)(PPh3)](Re sup>VIIO4) (2). Both compounds were characterized by infra-red spectroscopy and X-ray crystallography.
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