2006
DOI: 10.7124/bc.000744
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Study of IR spectrum of the 17β-estradiol using quantum-chemical density functional theory

Abstract: The frequency and intensity of IR absorption bands of female sex hormone, 17b-estradiol, are calculated and assigned using density functional theory with the B3LYP/6-31G** approach. For a big number of bands such assignment is made for the first time. The frequencies and normal modes of vibrations are predicted in the low-frequency region of the IR spectrum.

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Cited by 10 publications
(9 citation statements)
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“…These data agree with the theoretical data for the methylene group (ν as = 2926, ν s = 2853 cm -1 [19]), taking into account the scaling factor of 0.95, which is usually used for the stretching vibrations of C-H bond [20]. According to published data [19], the frequencies characteristic of carboxylic acids containing a dissociated carboxyl group are manifested in the regions near 1550 and 1400 cm -1 and are due to symmetric and asymmetric vibrations of COO -group.…”
Section: Methodssupporting
confidence: 83%
“…These data agree with the theoretical data for the methylene group (ν as = 2926, ν s = 2853 cm -1 [19]), taking into account the scaling factor of 0.95, which is usually used for the stretching vibrations of C-H bond [20]. According to published data [19], the frequencies characteristic of carboxylic acids containing a dissociated carboxyl group are manifested in the regions near 1550 and 1400 cm -1 and are due to symmetric and asymmetric vibrations of COO -group.…”
Section: Methodssupporting
confidence: 83%
“…E1, produced an O-H band at a higher wavelength than those containing only an alcoholic hydroxyl, e.g. E2 [31][32][33] . The least intense band from hydrogen bonds is observed in NIP and mag-NIP reference samples, stemming from the monomer interactions in the polymer structure.…”
Section: Ft-ir Spectramentioning
confidence: 99%
“…Hydroxyl groups in the hormone and monomer molecule formed intraand/or inter-molecular hydrogen bonds O-H. In general, steroidal estrogens containing only a phenolic hydroxyl, e.g., E1, produced an O-H band at a higher wavelength than those containing only an alcoholic hydroxyl, e.g., E2 [31][32][33]. The least intense band from hydrogen bonds is observed in NIP and mag-NIP reference samples, stemming from the monomer interactions in the polymer structure.…”
Section: Thermal Analysismentioning
confidence: 99%
“…Ðàñ ÷åò ðàâ íî âåñ íîé ãåî ìåò ðèè è êî ëå áà òåëü íûõ ÈÊ ñïåê òðîâ èñ ñëå äó åìûõ ìî ëå êóë ÒÑ è ÝÒ ïðî âå äåí â ðàì êàõ òå î ðèè ôóíê öè î íà ëà ïëîò íîñ òè [7] ìå òî äîì B3LYP â áà çèñå 6-31G** [8] ñ èñ ïîëü çî âà íè åì ïðî ãðàì ìû GAUSSIAN 03 [9]. Âîç ìîae íîñòü ïðè ìå íå íèÿ äàííî ãî ìå òî äà ðàñ ÷å òà äëÿ ïðåä ñêà çà íèÿ ÷àñ òîò, ôîðì êî ëå áà íèé è èí òåí ñèâ íîñ òåé ïî ëîñ ïî ãëî ùå íèÿ â ÈÊ ñïåê òðàõ ñòå ðî èä íûõ ãîð ìî íîâ àï ðî áè ðî âà íà íà ìè â ðà áî òå [10]. Ñî ïîñ òàâ ëÿÿ ðàñ ñ÷è òàí íûå ôîðìû íîð ìàëü íûõ êî ëå áà íèé ñ õà ðàê òå ðèñ òè ÷åñ êè ìè èí ôðàê ðàñ íû ìè ãðóï ïî âû ìè ÷àñ òî òà ìè [11] è ñ ýêñ ïå ðè ìåí òàëü íû ìè ÈÊ ñïåê òðà ìè ïî ãëî ùå íèÿ [12,13], ìû ñìîã ëè îöå íèòü âå ëè ÷è íó ïî ïðàâ êè íà àí ãàð ìî íè÷ íîñòü êî ëå áà íèé è êîð ðå ëÿ öèþ ýëåêòðî íîâ (ìàñ øòà áè ðó þ ùèé ìíî aeè òåëü), à òàê aeå ïðîâåñ òè îò íå ñå íèå âñåõ ïî ëîñ â ýêñ ïå ðè ìåí òàëü íûõ ÈÊ ñïåê òðàõ ÒÑ è ÝÒ.…”
unclassified
“… íà øåì ñèñ òå ìà òè ÷åñ êîì ïîä õî äå ê àíà ëè çó ñè ëî âî ãî ïî ëÿ è ÈÊ ñïåê òðîâ ãîð ìî íîâ [10,15] íà îñíî âå ðàñ ÷åò íûõ ìå òî äîâ êâàí òî âîé õè ìèè ïî ÿâëÿ åò ñÿ âîç ìîae íîñòü ïðåä ñêà çû âàòü íèç êî ÷àñ òîòíûå êî ëå áà íèÿ, êî òî ðûå íå äîñ òóï íû èç ìå ðå íè ÿì ñ ïî ìîùüþ ñòàí äàð òíîé ÈÊ ñî ëå âîé îïòè êè, õî òÿ ñîâðå ìåí íûå ìå òî äû ðà äè îñ ïåê òðîñ êî ïèè ìèê ðîâîëí óaeå ïî çâî ëÿ þò çîí äè ðî âàòü è ýòó îá ëàñòü êîëå áà íèé.  äè à ïà çî íå ÷àñ òîò 500-34 ñì -1 êî ëå áàòåëü íûå ìî äû îá ðà çó þò îá ëàñòü ïî ãëî ùå íèÿ, ñâÿçà ííóþ ñ äå ôîð ìà öè îí íû ìè êî ëå áà íè ÿ ìè âñåõ êîëåö óãëå ðîä íî ãî ñêå ëå òà, êðó òèëü íû ìè êî ëå áà íè ÿìè ÑÍ 3 -è ÑÍ 2 -ãðóïï, ôðàã ìåí òà ÑÎÍ è ýòè íèëüíîé ãðóï ïû.…”
unclassified