Infrared Spectrum of the Matrixhyphen;Isolated OH Radical

摘要

Infrared absorption in the region of 3450 cmminus;1has been observed in waterndash;rarehyphen;gas matrices subjected to vacuumhyphen;ultraviolet photolysis at 20.4deg; and 4.2deg;K. The splittings and isotope frequency ratios obtained from H216Ondash;D216O, H216Ondash;H218O, and D216Ondash;D218O mixtures lead to the assignment of these spectra to trapped OH radicals. No evidence for rotational motion of OH is found in these experiments.