Alkylperoxy and Alkyl Radicals. 5. Infrared Spectra and Ultraviolet Photolysis of t-C4H9O2 Radicals in Argon plus Oxygen Matrices

Article abstract of DOI:10.1021/j100307a012

tert-Butyl radicals formed by the pyrolysis of azoisobutane were isolated in matrices of Ar + 10percent 16O2 and Ar + 5percent 16O2 + 5percent 18O2.IR spectra of the resulting trapped species were obtained before and after irradiation of the matrices with a medium-pressure Hg arc lamp.In the 1200-200-cm^-1 spectral range, nine absorption bands were observed and assigned to the tert-butylperoxy radical.A summary of the known vibration frequencies assigned to primary, secondary, and tertiary alkylperoxy radical centers is presented.