TEMPERATURE DEPENDENCE OF ESR SIGNAL OF ISOPROPANOL RADICAL FORMED BY UV IRRADIATION
ESR signals of isopropanol radical were observed at various temperatures. Methyl groups of the radical were found to freely rotate down to 77 K, but to be in a frozen state at 4 K. Experimental results were discussed with the results calculated by INDO. A specially designed Dewar vessel was used for measurements at 77 K and 4 K.