Spectroscopy and structure of free radicals stabilized in cryogenic matrices

The results of spectroscopic (mainly vibrational IR spectroscopy and EPR spectroscopy) studies of radicals stabilized in solid inert-gas matrices are considered. Attention is focused on a comparison of experimental spectroscopic characteristics of radicals with those simulated by modern quantum chemical computation methods and on the use of these data for the elucidation of molecular and electronic structures of free radicals. The potential of new methods for radical generation in cryogenic matrices and the prospects for their application in spectroscopic studies are discussed. Data from the recent and earlier studies are compared.