ELECTRONIC STATES OF GA2P2

Geometries and energy separations of sixteen electronic states of the Ga2P2 cluster are computed using the complete active space multi-confi guration self-consistent field followed by multi-reference singles + d oubles configuration interaction (MRSDCI) computations that included o ver a million configurations. The ground state of Ga2P2 was found to b e a (1)A(g) state with an equilibrium structure of a rhombus. Low-lyin g (3)A(u), (1)A(u), and B-3(2g) excited states are also found with the same geometries. In addition, several other excited states are obtain ed.