Cobalt(III) Complexes with Tripodlike Quadridentate Ligands. III. Absorption and Circular Dichroism Spectra of Cobalt(III) Complexes Containing N-(2-Aminoethyl)iminodiacetate and Amino Carboxylate or 1,2-Diamine

Glycinato, l-alaninato, ethylenediamine, N,N-dimethylethylenediamine, (R)-propylenediamine, (R,R)-1,2-cyclohexanediamine and meso-2,3-butanediamine cobalt(III) complexes of a tripodlike ligand, N-(2-aminoethyl)iminodiacetate have been prepared. The geometrical configurations are assigned on the basis of their absorption, circular dichroism, and 1H-NMR spectra. The trans(O) isomer of meso-2,3-butanediamine complex is optically resolved and the relationship between the absolute configurations of the chiral 1,2-diamine complexes and their circular dichroism is discussed.