ALGEBRAIC APPROACH TO VIBRATIONAL-SPECTRA OF TETRAHEDRAL MOLECULES - FIRST-ORDER INFRARED INTENSITY MODEL

The algebraic approach we have proposed to describe the vibrational st retching modes of polyatomic molecules (Leroy and Michelot, J. Mol. Sp ectrosc. 151, 71-96 (1992); Can. J. Phys. 72, 274-289 (1994)) is appli ed to the silane molecule for up to seven quanta. We then suggest a fo rm of the dipole operator adapted to the (n000) local states by combin ing the strength of group theory method with the necessity of a compac t formulation. (C) 1996 Academic Press, Inc.