An E.s.r. Study of Free-radical Conversions in Irradiated Single Crystals of N-acetylglycine in the Temperature Range 77–300 K

Publisher Website
Google Scholar
Abstract
The radical products formed in single crystals of N-acetylglycine have been studied with e.s.r. spectroscopy. Altogether five radicals are formed in the temperature range 77 K to 300 K. Two of the intermediate radicals, H2Ċ·CO·NH·CH2·COOH and H3C·CO·Ṅ·CH2·COOH, have been identified in this work. The first is formed via a first-order process with an activation energy of 15·4 kcal/mole. Both intermediates are precursors of the same secondary radical previously identified by Miyagawa, Kurita and Gordy (1960). The results yield a reaction scheme for N-acetylglycine very much in agreement with that proposed for amino acids.