2008
DOI: 10.1007/s12043-008-0063-7
|View full text |Cite
|
Sign up to set email alerts
|

Laser Raman and infra-red spectra of biomolecule: 5-aminouracil

Abstract: Laser Raman (200-4000 cm −1 ) and IR (200-4000 cm −1 ) spectra of 5-aminouracil were recorded in the region 200-4000 cm −1 . Assuming a planar geometry and Cs point group symmetry, it has been possible to assign all the 36 (25a + 11a ) normal modes of vibration for the first time. The two NH bonds of the NH2 group appear to be equivalent as the NH2 stretching frequencies satisfy the empirical relation proposed for the two equivalent NH bonds of the NH2 group. The two NH2 stretching frequencies are distinctly s… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
2

Citation Types

3
4
0
2

Year Published

2013
2013
2024
2024

Publication Types

Select...
5
1

Relationship

0
6

Authors

Journals

citations
Cited by 11 publications
(9 citation statements)
references
References 43 publications
(52 reference statements)
3
4
0
2
Order By: Relevance
“…Theoretically calculated modes are closed to the experimental results as well as nearly to the ref [21]. Here, it is found here a modification for the reported earlier works [9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24]. The second one popular ring stretching mode, the Kekule ring stretching mode has been observed in the IR and Raman at 1212 and 1210 cm −1 as well as this mode is calculated to be at 1208 cm −1 for 5-aminouracil, but this mode for uracil has been observed in IR and Raman at 1086 cm −1 , this mode is calculated to be at 1086 cm −1 , which is found to be shifted up by ~ 120 cm −1 or increasing up to ~11 % due to the substituted amino (NH 2 ) groups on uracil pyrimidine ring.…”
Section: Resultssupporting
confidence: 71%
See 2 more Smart Citations
“…Theoretically calculated modes are closed to the experimental results as well as nearly to the ref [21]. Here, it is found here a modification for the reported earlier works [9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24]. The second one popular ring stretching mode, the Kekule ring stretching mode has been observed in the IR and Raman at 1212 and 1210 cm −1 as well as this mode is calculated to be at 1208 cm −1 for 5-aminouracil, but this mode for uracil has been observed in IR and Raman at 1086 cm −1 , this mode is calculated to be at 1086 cm −1 , which is found to be shifted up by ~ 120 cm −1 or increasing up to ~11 % due to the substituted amino (NH 2 ) groups on uracil pyrimidine ring.…”
Section: Resultssupporting
confidence: 71%
“…Here, it is noticeable that the Kekule mode and ring breathing are to be lowered in frequencies compared to the phenyl rings. Therefore, these proposed assignments for uracil and its derivatives are as the wide spectra and modifications under a guide line for the reported works [9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24]. Now, the above results are compared as the Kekule type (ν 14 ) of benzene to the frequency of uracil at ~1085 cm −1 and for 5-aminouracil at ~1208 cm −1 which appears to be higher magnitude by ~ 11% than uracil molecule due to the amino group.…”
Section: Resultsmentioning
confidence: 78%
See 1 more Smart Citation
“…Теоретическая интерпретация колебательных спектров замещенных урацила как одного из оснований ДНК являлась предметом исследования многих публикаций. Достаточно сослаться на те из них [1][2][3][4][5][6][7][8][9], в которых список литературы дает представление об интересе к построению структурно-динамических моделей данного класса биомолекул.…”
Section: Introductionunclassified
“…Обоснованием достоверности результатов, представленных в работах [1][2][3][4][5][6][7][8][9], служило хорошее совпадение с экспериментальными данными по положению интенсивных полос в ИК и КР спектрах для конкретного исследуемого молекулярного объекта. Системный анализ молекулярных параметров, характеризующих общие закономерности в колебательных спектрах замещенных урацила, в цитируемых работах не просматривается.…”
Section: Introductionunclassified