Py. Feng et K. Balasubramanian, GEOMETRIES AND ENERGY SEPARATIONS OF THE ELECTRONIC STATES OF IN2P2, Chemical physics letters, 264(3-4), 1997, pp. 449-453
Geometries and energy separations of several electronic states of In2P
2 are computed using the relativistic complete active space multi-conf
iguration self-consistent field followed by multi-reference singles doubles configuration interaction (MRSDCI) computations in conjunction
with relativistic effective potentials that included over a million c
onfigurations, The (1)A(g) ground state with an equilibrium structure
of a rhombus and several low-lying excited states are found with the s
ame geometries.