Isomers of bis(S)-lysinato-O,N,N)cobalt(III) cation: Preparation and properties

Abstract

In the complex cation of the compound [Co((S)-Lys)2]NO3 (S)-lysine is coordinated as a tridentate ligand, giving rise to ΛΔΔΔ-cis, cis, trans and cis, trans,cis isomers. Yields of both isomers are higher in dimethyl sulfoxide than in water. Their structure was derived from 1H NMR, CD and electronic absorption spectra.