Electron spin resonance studies of ˙OH and ˙O– radicals in irradiated ice
Abstract
Hydroxyl radicals formed by ionizing radiation in ice crystals are reversibly converted into ˙O– anions on cooling to ca. 4 K. Using D2O enriched in 17O, hyperfine coupling to 17O in ˙17OD and in ˙17O– radicals has been monitored. The results support the identification of these species, and shed light on their electronic structures.