Infrared spectra and structures of SiH4 and GeH4 dimers in low-temperature nitrogen matrixes

T.D. Kolomiitsova, K.F. Savvateev, D.N. Shchepkin, I.K. Tokhadze, K.G. Tokhadze

Результат исследований: Научные публикации в периодических изданияхстатья

9 Цитирования (Scopus)

Аннотация

© 2014 American Chemical Society.IR absorption spectra of monoisotopic silane 28SiH4 and germane 76GeH4 are studied in nitrogen matrixes at T = 11 K. It is shown that the absorption spectra of silane and germane are similar in the regions of the ν3 stretching and ν4 bending vibrations. A significant influence of a nitrogen matrix on the absorption spectra of XH4 molecules was established. The bands in the ν3 region of silane and germane in a nitrogen matrix are blue-shifted. The spectra of monomer molecules of SiH4 and GeH4 contain a triplet in the stretching region and a doublet in the bending region, which is explained by the change in the molecular symmetry of an XH4 molecule from Td to C3 on passage from the gas phase to solid nitrogen. The calculations of the matrix structure were made by the Monte Carlo method with the ensemble of particles containing the SiH4 molecule and 863 N2 molecules. The calculations predicted a set of equilibrium structures with the C3 symmetry. The structure of the absorption b
Язык оригиналаанглийский
Страницы (с-по)2553-2561
Число страниц9
ЖурналJournal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment & general theory
Том119
Номер выпуска11
DOI
СостояниеОпубликовано - 2015

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