High-Resolution IR Spectroscopy in Low-Temperature Matrices. Structure of Fundamental Absorption Bands of SiH4 in Nitrogen and Argon Matrices

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

1 Цитирования (Scopus)

Аннотация

Abstract: Features of the high-resolution IR spectra of the SiН4 molecule in low-temperature matrices of N2 and Ar at 6.6–20 K, depending on the experimental conditions, are analyzed. It was found that, in the nitrogen matrix, in the stretching region of 28SiH4, three narrow bands are observed and, in the region of bending vibration (ν4), there are two monomer bands instead of one, which is explained by the change in the symmetry of the molecule from Td in gas to C3v in solid nitrogen. The spectra in the argon matrix change even more, where, in addition to narrow bands, rather wide components are also detected. The spectrum of SiН4 in an Ar matrix was calculated based on the QM/MM approach, which confirms the reality of the change in the symmetry of the molecule as a result of its interaction with the matrix environment.

Язык оригиналаанглийский
Страницы (с-по)1588-1597
Число страниц10
ЖурналOPTICS AND SPECTROSCOPY
Том128
Номер выпуска10
DOI
СостояниеОпубликовано - 1 окт 2020

Предметные области Scopus

  • Электроника, оптика и магнитные материалы
  • Атомная и молекулярная физика и оптика

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