Unstable intermediates. Part CXXXV. The formation of Sn3+ and Pb3+ centres in irradiated tin and lead salts, and their electron spin resonance parameters

Abstract

A wide range of stannous, stannic, plumbous, and plumbic compounds have been exposed to ⁶⁰Co γ-rays at 77 K and their e.s.r. spectra studied. In most cases very high-field features were detected that can be ascribed to species containing ¹¹⁹Sn, ¹¹⁷Sn, and ²⁰⁰Pb nuclei. These are thought to be Sn³⁺ and Pb³⁺ ions bonded to various ligands characteristic of the host lattices. Trends in the derived hyperfine coupling constants are discussed in terms of environmental effects.