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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.

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Goforth, A., Hipp, R., Smith, M., Peterson, L., & zur Loye, H.-C. (2005). Tris(Ethylenediamine)Cobalt(III) Nonaiododibismuthate. Acta Crystallographica Section E, 61(8), m1531–m1533.


© Acta Crystallographica Section E 2005, International Union of Crystallography.

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