Infrared Spectroscopic Evidence for the Species HO2

Abstract

Infrared absorptions observed following the photolysis of mixtures of HI and O2 in an Ar matrix at 4°K appear to be contributed by HO2 produced in the matrix. Studies on isotopically substituted systems support this assignment. The two oxygen atoms have been shown to be nonequivalent. Approximate force constants and thermodynamic functions for HO2 are tabulated.