Unstable intermediates. Part LXXXII. Electron spin resonance spectra of the species Br2–, I2–, BrOH–, and IOH– in γ-irradiated frozen aqueous solutions of alkali-metal halides

Abstract

Exposure of aqueous solutions of alkali-metal bromides or iodides to 60Co γ-rays at 77 K gave hydroxyl radicals, Br2– or I2–, and species identified as BrOH– or IOH–. The resulting magnetic parameters are compared with those for VK centres in alkali halide crystals, and with CIOH– in strontium chloride hexahydrate. Argentic and mercuric iodide complexes in frozen aqueous solution gave only I2– under these conditions.