Abstract
The self-association of phenol in low-temperature argon and nitrogen matrices has been studied using IR spectroscopy. At high M/A ratios, spectra of almost pure monomeric phenol were obtained; lowering the M/A ratio resulted in increasing self-association. Under the sample preparation conditions used, the dominating aggregate was found to be the dimer, although several submaxima in the OH stretching region show that also multimers are present. Annealing the matrix left the intensity of the dimer band almost unaffected, while the amount of higher aggregates increased. For phenol in nitrogen matrix the OH torsion band shows a fine structure, which persisted in an argon matrix doped with 10% nitrogen. In a matrix of pure argon, however, only a single sharp band was observed for this transition.
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