Infrared spectroscopy of hydrogen-bonded phenol - amine clusters in supersonic jets

Atsushi Iwasaki, Asuka Fujii, Takeshi Watanabe, Takayuki Ebata, Naohiko Mikami

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149 Citations (Scopus)


We report infrared spectra of hydrogen-bonded phenol - amine clusters, phenol - NH3, -N(CH3)3, -NH-(C2H5)2, and -N(C2H5)3, prepared in jet expansions. The OH, NH, and CH stretching fundamentals were studied. Infrared - ultraviolet double-resonance techniques were utilized for vibrational spectroscopy of size-selected clusters. The OH stretch frequencies of the phenol moieties showed extremely large red-shifts from that of bare phenol, reflecting the strong proton affinities of the amines. Moreover, non-proton-transferred structures of the clusters were confirmed. The detailed structure of phenol - NH3 was examined by ab initio calculations, which reproduced the observed infrared spectrum.

Original languageEnglish
Pages (from-to)16053-16057
Number of pages5
JournalJournal of Physical Chemistry
Issue number40
Publication statusPublished - 1996 Oct 3


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