Raman spectra of terephthalic acid crystals in the temperature range 5 K–300 K

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

5 Цитирования (Scopus)

Аннотация

Raman spectra of terephthalic acid crystals were taken in the temperature range 5 K–300 K. The temperature dependence of the vibrational frequency of the O⋯O hydrogen bond is found to contain information on the mechanism of the proton motion along the bond (hopping and/or tunneling). Onset temperatures of both tunneling and ordering (termination of the hopping) process are determined. Triplet exciton bands observed in the high-wavenumber spectral range also exhibit the relation with proton motions between oxygen atoms. The energy spectra of molecular chains of terephthalic acid, the proton potential energy along the bond, and the probabilities of tunneling as a function of the hydrogen bond lengths are calculated.

Язык оригиналаанглийский
Страницы (с-по)319-323
Число страниц5
ЖурналSpectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Том202
DOI
СостояниеОпубликовано - 5 сен 2018

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