Calculation of IR spectra of highly excited CHF2Cl, CH3CH2Cl, and HCOOH molecules

IR absorption spectra of stretching C-H and C=O vibrations of CHF2Cl, C2H5C l, and HCOOH molecules possessing a considerable store of vibrational energ y are calculated. Calculations are based on simple one-by-one examination o f all the vibrational states of a given energy. The range of validity of th e computational method is discussed. The results of calculations are compar ed on a qualitative level with the experimental data on IR multiple photon dissociation of the aforesaid molecules.