On the Absorption Spectrum of CF2 and Its Vibrational Analysis

Abstract

The flash photolysis of CF₂Br₂ has been used to obtain the absorption spectrum of the CF₂ radical. The principal features of the spectrum are a progression of the upper state bending frequency, and a number of weak bands which are shown to arise from a vibrationally excited lower state. There is no evidence for transitions involving stretching vibrations. The vibrationless origin of the system (v₁′=0, v₂′=0, v₁″=0, v₂″=0) is shown to lie at approximately 37 695 cm^—1. The deformation frequencies of the lower and upper states are about 660 and 500 cm^—1, respectively.