Infrared Spectrum and Molecular Constants of Carbon Dioxide. Part II. Levels 10°0 and 02°0, 10°1 and 02°1 Coupled by Fermi Resonance

Abstract

Absorption bands of carbon dioxide involving the Fermi diads 10°0, 02°0 and 10°1, 02°1 have been investigated and molecular constants obtained. The variation in the centrifugal stretching constants which has been observed in the component levels is such that the average centrifugal stretching constant of the diad is very nearly the same as that of the vibrationless ground state of CO2.