配位子場分裂
Typical solid state properties such as magnetism, conductivity, and the optical absorption properties of the metal complexes depend on the width of the ligand field splitting of the central metal atom. Therefore, we can change the solid state properties continually by controlling the ligand field splitting. About the ligand field splitting, for example, it is well known there is Tsuchida's spectrochemical series for the cobalt complexes, but it is revealed that the spectrochemical series are suitable for not all central metals except cobalt, suggested by the results of the DV-Xα molecular orbital calculations. In this study we investigate the new way for discussing the widths of the ligand field splitting by comparing the energy levels between metallic d-orbitals and the ligand σ-, π- and π*- orbitals calculated by DV-Xα methods.
