Radiation mechanisms. Part 9. A comparative electron spin resonance study of radiation effects in thallous and thallic salts

Abstract

Exposure of thallous salts to high-energy radiation usually yields Tl^II centres together with paramagnetic centres derived from the anions which show strong charge-transfer interaction with neighbouring thallous ions. Previous work on thallous acetate and nitrate is extended to the perchlorate, and to the corresponding Tl^III salts. The latter all gave Tl^II but centres derived from the anions generally failed to show any hyperfine interaction with neighbouring cations despite the high positive charge. The nature of the radicals detected and their mode of formation are discussed.