Comprehensive high resolution study of the SiH tetradecad stretching bands: Appearance and applications of the isotopic substitution effect in molecules of spherical symmetry; Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy; Vol. 309
| Parent link: | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy.— .— Amsterdam: Elsevier Science Publishing Company Inc. Vol. 309.— 2024.— Article number 123831, 12 p. |
|---|---|
| Diğer Yazarlar: | , , , , , , |
| Özet: | A set of new relations between different spectroscopic parameters of the high symmetry XY4 spherical top molecules is derived on the basis of the general isotopic substitution theory, and a comprehensive high accurate analysis of the five stretching bands (the bands ν1+ν3(F2), 2ν3(F2), 2ν3(E), 2ν3(A1), and 2ν1(A1); the three latter ones are forbidden in absorption) of the tetradecad of the SiH4 molecule is made. The high resolution spectra of MSiH4 (M=28,29,30) in their natural abundance were recorded with a Bruker IFS125 HR Fourier transform infrared spectrometer at the Technische Universität Braunschweig, Germany with an optical resolution of 0.003 cm−1 and theoretically analyzed (in this case, for the first time both for all five bands of the 29SiH4 and 30SiH4 species, and for 2ν3(E), 2ν1(A1) bands of the 28SiH4 one). The number of 2713 transitions of the 28SiH4 species (which is more than fourteen times higher compared to analogous studies carried out earlier) belonging to all five ro-vibrational bands of the tetradecad (which are 272, 1897, 15, 369, and 160 transitions of the ν1+ν3(F2), 2ν1(A1), 2ν3(A1), 2ν3(F2), and 2ν3(E) bands) were assigned with the values of quantum number Jmin/Jmax = 5/22, 1/24, 14/20, 4/24, and 6/23, respectively. The analysis of the obtained experimental data was made on the basis of the Hamiltonian model which takes into account all effects and resonance interactions which are possible in such molecular system. The weighted fit of the 2713 transitions led to a set of 40 rotational, centrifugal distortion, tetrahedral splitting, and resonance interaction parameters which reproduce the initial experimental data with an accuracy of drms=4.11×10−4 cm−1. An analogous analysis was made for the two other isotopologues, 29SiH4 and 30SiH4, of silane. In this case, the initial values of the most important spectroscopic parameters of both species were theoretically estimated on the basis of results of the isotopic substitution theory. As the result of the analysis, two sets of the 12 spectroscopic parameters were obtained from the weighted fits for the 29SiH4 and 30SiH4 molecules which reproduce the 461 and 375 initial ro-vibrational transitions with the drms of 3.91×10−4 and 4.9710−4 cm−1
Текстовый файл AM_Agreement |
| Dil: | İngilizce |
| Baskı/Yayın Bilgisi: |
2024
|
| Konular: | |
| Online Erişim: | https://doi.org/10.1016/j.saa.2023.123831 |
| Materyal Türü: | Elektronik Kitap Bölümü |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=672704 |
MARC
| LEADER | 00000naa0a2200000 4500 | ||
|---|---|---|---|
| 001 | 672704 | ||
| 005 | 20250410151229.0 | ||
| 014 | |2 sici | ||
| 090 | |a 672704 | ||
| 100 | |a 20240523d2024 k||y0rusy50 ca | ||
| 101 | 1 | |a eng |c rus | |
| 102 | |a NL | ||
| 135 | |a drcn ---uucaa | ||
| 181 | 0 | |a a |b e | |
| 182 | 0 | |a b | |
| 183 | 0 | |a cr |2 RDAcarrier | |
| 200 | 1 | |a Comprehensive high resolution study of the SiH tetradecad stretching bands: Appearance and applications of the isotopic substitution effect in molecules of spherical symmetry |f F. Zhang, O. N. Ulenikov, O. V. Gromova [et al.] |z rus | |
| 203 | |a Текст |b визуальный |c электронный | ||
| 283 | |a online_resource |2 RDAcarrier | ||
| 320 | |a References: p. 11-12 (87 tit.) | ||
| 330 | |a A set of new relations between different spectroscopic parameters of the high symmetry XY4 spherical top molecules is derived on the basis of the general isotopic substitution theory, and a comprehensive high accurate analysis of the five stretching bands (the bands ν1+ν3(F2), 2ν3(F2), 2ν3(E), 2ν3(A1), and 2ν1(A1); the three latter ones are forbidden in absorption) of the tetradecad of the SiH4 molecule is made. The high resolution spectra of MSiH4 (M=28,29,30) in their natural abundance were recorded with a Bruker IFS125 HR Fourier transform infrared spectrometer at the Technische Universität Braunschweig, Germany with an optical resolution of 0.003 cm−1 and theoretically analyzed (in this case, for the first time both for all five bands of the 29SiH4 and 30SiH4 species, and for 2ν3(E), 2ν1(A1) bands of the 28SiH4 one). The number of 2713 transitions of the 28SiH4 species (which is more than fourteen times higher compared to analogous studies carried out earlier) belonging to all five ro-vibrational bands of the tetradecad (which are 272, 1897, 15, 369, and 160 transitions of the ν1+ν3(F2), 2ν1(A1), 2ν3(A1), 2ν3(F2), and 2ν3(E) bands) were assigned with the values of quantum number Jmin/Jmax = 5/22, 1/24, 14/20, 4/24, and 6/23, respectively. The analysis of the obtained experimental data was made on the basis of the Hamiltonian model which takes into account all effects and resonance interactions which are possible in such molecular system. The weighted fit of the 2713 transitions led to a set of 40 rotational, centrifugal distortion, tetrahedral splitting, and resonance interaction parameters which reproduce the initial experimental data with an accuracy of drms=4.11×10−4 cm−1. An analogous analysis was made for the two other isotopologues, 29SiH4 and 30SiH4, of silane. In this case, the initial values of the most important spectroscopic parameters of both species were theoretically estimated on the basis of results of the isotopic substitution theory. As the result of the analysis, two sets of the 12 spectroscopic parameters were obtained from the weighted fits for the 29SiH4 and 30SiH4 molecules which reproduce the 461 and 375 initial ro-vibrational transitions with the drms of 3.91×10−4 and 4.9710−4 cm−1 | ||
| 336 | |a Текстовый файл | ||
| 371 | |a AM_Agreement | ||
| 461 | 1 | |t Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy |c Amsterdam |n Elsevier Science Publishing Company Inc. | |
| 463 | 1 | |t Vol. 309 |v Article number 123831, 12 p. |d 2024 | |
| 610 | 1 | |a spherical top molecules Isotopic substitution in molecules | |
| 610 | 1 | |a high-resolution spectra ofM SiH4 (M = 28, 29, 30) | |
| 610 | 1 | |a resonance interactions in spherical top molecules | |
| 610 | 1 | |a determination of spectroscopic parameters | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a электронный ресурс | |
| 701 | 0 | |a Zhang Fangce | |
| 701 | 1 | |a Ulenekov (Ulenikov) |b O. N. |c physicist |c Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences |f 1949- |g Oleg Nikolaevich |9 17837 | |
| 701 | 1 | |a Gromova |b O. V. |c physicist |c Professor of Tomsk Polytechnic University, Candidate of physical and mathematical sciences |f 1982- |g Olga Vasilievna |9 17839 | |
| 701 | 1 | |a Bekhtereva |b E. S. |c physicist |c Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences |f 1974- |g Elena Sergeevna |9 17851 | |
| 701 | 1 | |a Konova |b Yu. V. |c physicist |c technician at Tomsk Polytechnic University |f 1992- |g Yuliya Vladimirovna |9 21330 | |
| 701 | 1 | |a Sydow |9 Ch. |b Christian | |
| 701 | 1 | |a Bauerecker |b S. |g Sigurd | |
| 801 | 0 | |a RU |b 63413507 |c 20240523 | |
| 850 | |a 63413507 | ||
| 856 | 4 | |u https://doi.org/10.1016/j.saa.2023.123831 |z https://doi.org/10.1016/j.saa.2023.123831 | |
| 942 | |c CF | ||