Circular Dichroism Spectra of Cobalt(III), Platinum(II) and Molybdenum(0) Complexes of 1-Phenylethane-1,2-diamine

Abstract

The circular dichroism spectra are presented for the complexes, trans-[CoL₂C1₂]⁺, trans-[CoL₂Br₂]⁺, [CoL(NH₃)₄]³⁺, [CoL(CN)₄]^-, [MoL(CO)₄] and [PtL(py)₂]²⁺, where L is (R)-1-phenylethane-l,2- diamine, in a number of solvents. The solvent dependence of the spectra for the cobalt(m) complexes has been analysed in terms of stereoselective solvation of the diamine N-H protons. The spectra are compared with those of the analogous (R)-propane-1,2-diamine complexes. This comparison shows that the so-called 'conformational effect' is not predominant.