Infrared matrix isolation studies on the t-butyl radical

The infrared spectrum of the t-butyl radical isolated in an argon matrix was obtained by gas phase pyrolysis of azoisobutane and 2-nitrosoisobutane. The infrared spectrum is consistent with a C3v structure for the radical. The data obtained from the matrix isolation studies were used to reassess the ΔH°f,300 for the radical.