Absorption and CD Spectral Properties of Bis(ethylenediamine)cobalt(III) Complexes with O-Bonded Sulfoxide and Seleninate

Abstract

Abstract The absorption and CD spectral behavior of [Co{OS(CH3)CH2CH2NH2}(en)2]3+ and [Co{OSe(O)CH2CH2NH2}(en)2]2+ was discussed. The O-bonded seleninato isomer, Λ-(+)500CD-[Co{OSe(O)CH2CH2NH2}(en)2]2+, showed racemization at the chiral selenium atom in an aqueous solution and a shift of the equilibrium between the (R) and (S) configurations of the chiral selenium atom through the protonation on the pendant oxygen atom.