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Acta Cryst. (2005). E61, m1531-m1533  [ doi:10.1107/S1600536805021501 ]

Tris(ethylenediamine)cobalt(III) nonaiododibismuthate

A. M. Goforth, R. E. Hipp, M. D. Smith, L. Peterson and H.-C. zur Loye

Abstract: The asymmetric unit of the title compound, [Co(C2H8N2)3][Bi2I9], crystallizes in the orthorhombic space group Cmc21. The asymmetric unit contains half of a [Co(en)3]3+ cation (en is ethylenediamine) and half of a [Bi2I9]3- anion. Both species are located on mirror planes, requiring the [Co(en)3]3+ cation to be present as a statistically disordered mixture of both enantiomeric forms. Crystals were grown solvothermally from an ethanol-water solvent mixture using rac-[Co(en)3]I3 and bismuth triiodide as starting materials. The compound is a rare example of a mixed-metal halobismuthate material.

Online 13 July 2005


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