Additional constants of motion of the CNDO-like many-electron hamiltonians of planar molecular systems

Abstract

An augmented set of constants of motion of the CNDO-like many-electron hamiltonian of a planar molecular system is determined and used in deducing the a priori features of the eigensystem of this operator. An additional splitting of the space of the hamiltonian into the orthogonal, non-interacting subspaces is given and some relations between the eigensystems in these subspaces are obtained.