FTIR spectra and conformations of 2`-deoxyuridine in Kr matrices
The Fourier transform infrared spectra in the range 4000–200 cm⁻¹ of pyrimidine nucleoside 2'-deoxyuridine (dU) have been obtained in the low temperature inert Kr matrices. For the first time, instead of a usual flat mirror, a low temperature one-coordinate retroreflector was used as the matr...
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| Дата: | 2007 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2007
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| Назва видання: | Физика низких температур |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/121790 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | FTIR spectra and conformations of 2`-deoxyuridine in Kr matrices / A.Yu. Ivanov, V.A. Karachevtsev // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 772-777. — Бібліогр.: 34 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-1217902017-06-17T03:03:16Z FTIR spectra and conformations of 2`-deoxyuridine in Kr matrices Ivanov, A.Yu. Karachevtsev, V.A. Classical Cryocrystals The Fourier transform infrared spectra in the range 4000–200 cm⁻¹ of pyrimidine nucleoside 2'-deoxyuridine (dU) have been obtained in the low temperature inert Kr matrices. For the first time, instead of a usual flat mirror, a low temperature one-coordinate retroreflector was used as the matrix substrate. Owing to this, the matrix setup is insensitive to dip angle vibrations of the cryostat and is favourable to work with thinner matrix layers. Of two syn-conformers with dU_s1 and dU_s2 (stabilized by the intramolecular hydrogen bond O5'H…O2), only dT_s2 conformer with C2'-endo structure of the ribose ring was uniquely quenched. The height of the interconversion barrier of the minor syn-conformer dU_s1 was estimated to be below 0.7 kcal/mole. It was shown that the energy relaxation of impurities in Kr is slower than in Ar matrices. 2007 Article FTIR spectra and conformations of 2`-deoxyuridine in Kr matrices / A.Yu. Ivanov, V.A. Karachevtsev // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 772-777. — Бібліогр.: 34 назв. — англ. 0132-6414 PACS: 33.15.–e; 67.80.Cx http://dspace.nbuv.gov.ua/handle/123456789/121790 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Classical Cryocrystals Classical Cryocrystals |
| spellingShingle |
Classical Cryocrystals Classical Cryocrystals Ivanov, A.Yu. Karachevtsev, V.A. FTIR spectra and conformations of 2`-deoxyuridine in Kr matrices Физика низких температур |
| description |
The Fourier transform infrared spectra in the range 4000–200 cm⁻¹ of pyrimidine nucleoside 2'-deoxyuridine
(dU) have been obtained in the low temperature inert Kr matrices. For the first time, instead of a
usual flat mirror, a low temperature one-coordinate retroreflector was used as the matrix substrate. Owing to
this, the matrix setup is insensitive to dip angle vibrations of the cryostat and is favourable to work with thinner
matrix layers. Of two syn-conformers with dU_s1 and dU_s2 (stabilized by the intramolecular hydrogen
bond O5'H…O2), only dT_s2 conformer with C2'-endo structure of the ribose ring was uniquely quenched.
The height of the interconversion barrier of the minor syn-conformer dU_s1 was estimated to be below 0.7
kcal/mole. It was shown that the energy relaxation of impurities in Kr is slower than in Ar matrices. |
| format |
Article |
| author |
Ivanov, A.Yu. Karachevtsev, V.A. |
| author_facet |
Ivanov, A.Yu. Karachevtsev, V.A. |
| author_sort |
Ivanov, A.Yu. |
| title |
FTIR spectra and conformations of 2`-deoxyuridine in Kr matrices |
| title_short |
FTIR spectra and conformations of 2`-deoxyuridine in Kr matrices |
| title_full |
FTIR spectra and conformations of 2`-deoxyuridine in Kr matrices |
| title_fullStr |
FTIR spectra and conformations of 2`-deoxyuridine in Kr matrices |
| title_full_unstemmed |
FTIR spectra and conformations of 2`-deoxyuridine in Kr matrices |
| title_sort |
ftir spectra and conformations of 2`-deoxyuridine in kr matrices |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2007 |
| topic_facet |
Classical Cryocrystals |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/121790 |
| citation_txt |
FTIR spectra and conformations of 2`-deoxyuridine in Kr matrices / A.Yu. Ivanov, V.A. Karachevtsev // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 772-777. — Бібліогр.: 34 назв. — англ. |
| series |
Физика низких температур |
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AT ivanovayu ftirspectraandconformationsof2deoxyuridineinkrmatrices AT karachevtsevva ftirspectraandconformationsof2deoxyuridineinkrmatrices |
| first_indexed |
2023-10-18T20:40:19Z |
| last_indexed |
2023-10-18T20:40:19Z |
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1796150809689325568 |