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 V_K 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.