Potential energy function of polyatomic molecules: Fourthorder approximation of the potential energy function of CO _{2}: Spectroscopic constants of nine isotopic species
Abstract
In this paper are given the values of the coefficients involved in the fourthorder expansion, with respect to massindependent internal coordinates, of the potential energy function of CO _{2}. This function is applied to the computation of the vibrational energy levels of nine isotopic species of this molecule. A comparison between experimental and theoretical results is given along with the spectroscopic constants of these nine species. The coefficients appearing in the expansion of the potential energy function with respect to dimensionless normal coordinates are also given for each of these molecules.
 Publication:

Journal of Molecular Spectroscopy
 Pub Date:
 November 1971
 DOI:
 10.1016/00222852(71)901597
 Bibcode:
 1971JMoSp..40..337C