Infrared Absorption Spectrum of Gaseous CF3CO Radical; Recording on a Rapid-Scan Infrared Spectrometer

Abstract

A rapid-scan infrared spectrometer capable of scanning the region from 5000 to 650 cm−1 in 200 μs was constructed and successfully applied to study CF3CO radical produced by flash photolysis. Four absorption bands of the radical were detected at 1574, 1338, 1115, and 1024 cm−1 for scanning started 25 μs after the firing of a Xe flash tube. They were tentatively assigned to the CO stretching, CF3 stretching (a species), CF3 stretching (e species), and CC stretching vibrations, respectively.