Acta Cryst. (2006). E62, m52-m55  [ doi:10.1107/S160053680503998X ]

Potassium cis-[(R)-aspartato(2-)][(S)-aspartato(2-)]cobaltate(III) 3.5-hydrate at 120 K

O. Versiane, J. Felcman, J. L. Miranda, R. A. Howie, J. M. S. Skakle and J. L. Wardell

Abstract: The title compound, K[Co(C₄H₄NO₄)₂]3.5H₂O, is a by-product resulting from adventitious oxidation, in the presence of racemic aspartic acid, of cobalt(II) in a cobaltous starting material. The presence of both enantiomeric forms of the tridentate aspartate ligand in the cobaltate anion is significant in eliminating the possibility of the existence of isomeric forms of the cis(N) isomer.

Online 10 December 2005

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