Abstract

Abstract The absorption and circular dichroism (CD) spectra of twelve optically active chromium (III) complexes containing three bidentate ligands have been measured in the near-infrared to ultraviolet region. CD spectra in the spin-forbidden d-d absorption band region have been considered mainly in relation to the CD bands in the first spin-allowed d-d absorption band region. It has been concluded that the absolute configurations of chromium (III) complexes can be determined on the basis of the signs of the CD bands in the spin-forbidden band region. The splitting components of the CD bands in the spin-forbidden band region have been discussed considering the crystal field treatment by Macfarlane.

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