Ab initio Effective Core Potentials (ECP) Calculation on Group ⅢA Trimethyl Compounds

There have been numerous studies of the photoelectron spectra （PES） on group ⅢA trimethyl compound MMe3（M=B, Al, Ga and In）. However, no reports on the theoretical Koopmans’ IPs have ever been seen for MMe3 except BMe3. In literature the assignment of the spectral band and the study on the electronic structure of M ’Me3