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DOI: 10.1039/A705265K (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1998, 413-416

Synthesis, structure and magnetism of the oxalato-bridged chromium(III) complex [NBun4]4[Cr2(ox)5]·2CHCl3[hair space]†

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Vanessa M. Masters, Clint A. Sharrad, Paul V. Bernhardt, Lawrence R. Gahan, Boujemaa Moubaraki and Keith S. Murray

Abstract

The binuclear complex [NBun4]4[Cr2(ox)5]·2CHCl3 has been prepared by an ion-exchange procedure employing Dowex 50WX2 cation-exchange resin in the n-butylammonium form and potassium tris(oxalato)chromate(III). The dimeric complex was characterised by a crystal structure determination: monoclinic, space group C2/c, a = 29.241(7), b = 15.192(2), c = 22.026(5) Å, β = 94.07(1)°, Z = 4. The magnetic susceptibility (300–4.2 K) indicated that the chromium(III) sites were antiferromagnetically coupled (J = –3.1 cm–1).

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