Lie algebra and molecular shell model. II

This paper works out the double tensors of the chain Q ⊂ G, where Q and G represent a point group and its subgroup of lower symmetry, respectively. By using techniques of the fractional parentage coefficient (FPC) and of the Wigner-Eckart theorem, the matrices of electrostatic interaction in terms of molecular parameters are performed. Similarly, the matrices of spin-orbital interaction are accomplished as well.