Potential energy surfaces of electronic states of AlP 2, Al 2P and their ions

Abstract

The low-lying electronic states of AlP 2, Al 2P and their anions and cations are investigated using a complete active space multi-configuration self-consistent field technique followed by multi-reference singles+doubles configuration interaction (MRSDCI) calculations. Potential energy surfaces, geometries, energy separations, adiabatic ionization energies, electron affinities, dipole moments vibrational frequencies, zero-point and dissociation energies are computed. While AlP 2 exhibits similarity to the heavier analogs, Al 2P was found to exhibit a different ground state compared to Ga 2P and In 2P.