EPR of Gamma Irradiation Induced Radicals in NaHCO3, CsHCO3 and Na2CO3

Abstract

In this study gamma irradiated NaHCO<inf>3</inf>, CsHCO<inf>3</inf> and Na<inf>2</inf>CO<inf>3</inf> were investigated at room temperature. The radicals induced by gamma irradiation in NaHCO<inf>3</inf> were found to be C(·)O<inf>3</inf>/-, HC(·)O<inf>3</inf> and C(·)O<inf>2</inf>/-; in CsHCO<inf>3</inf> the species were attributed to HC(·)O<inf>3</inf>; and in Na<inf>2</inf>CO<inf>3</inf> to C(·)O<inf>3</inf>/- and C(·)O<inf>2</inf>/- radicals. The hyperfine parameters for the hydrogen in HC(·)O<inf>3</inf>, and the 13C nucleus in C(·)<inf>2</inf>/- radical have been determined. The results were compared with literature data for similar compounds and the EPR properties of the C(·)<inf>2</inf>/- radical were discussed.; In this study gamma irradiated NaHCO<inf>3</inf>, CsHCO<inf>3</inf> and Na<inf>2</inf>CO<inf>3</inf> were investigated at room temperature. The radicals induced by gamma irradiation in NaHCO<inf>3</inf> were found to be C·O<inf>3</inf>-, HC·O<inf>3</inf> and C·O<inf>2</inf>-; in CsHCO<inf>3</inf> the species were attributed to HC·O<inf>3</inf>; and in Na<inf>2</inf>CO<inf>3</inf> to C·O<inf>3</inf>- and C·O<inf>2</inf>- radicals. The hyperfine parameters for the hydrogen in HC·O<inf>3</inf>, and the 13C nucleus in C·O<inf>2</inf>- radical have been determined. The results were compared with literature data for similar compounds and the EPR properties of the C·O<inf>2</inf>- radical were discussed.