A theory of nuclear motion in polyatomic molecules based upon the morse oscillator: I. Application to the stretching overtone spectra of water and benzene molecules

A theory of molecular vibrations is presented which is based upon the Morse, as opposed to the harmonic, oscillator. As a first application of this model, the stretching overtone spectra of the benzene and water molecules have been calculated, these examples being chosen on account of the high degree of anharmonicity characterizing their potentials and the availability of suitable experimental data.