Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/51463
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dc.contributor.authorKhamidullina, L. A.en
dc.contributor.authorPuzyrev, I. S.en
dc.contributor.authorPestov, A. V.en
dc.contributor.authorMoshkin, V. S.en
dc.contributor.authorYatluk, Yu G.en
dc.date.accessioned2017-09-04T14:45:58Z-
dc.date.available2017-09-04T14:45:58Z-
dc.date.issued2012-
dc.identifier.citationStructure and absorption spectra of substituted 2-hydroxy-2-trifluoromethylchroman-4-ones / L. A. Khamidullina, I. S. Puzyrev, A. V. Pestov, V. S. Moshkin, Yu G. Yatluk // Journal of Applied Spectroscopy. — 2012. — Vol. 79. — № 4. — P. 509-514.en
dc.identifier.issn0021-9037-
dc.identifier.other1good_DOI
dc.identifier.otherd3fa176a-bfb7-43c8-b83b-29701e150d8epure_uuid
dc.identifier.otherhttp://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=84880277133m
dc.identifier.urihttp://hdl.handle.net/10995/51463-
dc.identifier.urihttps://elar.urfu.ru/handle/10995/51463en
dc.description.abstractUV absorption spectra of substituted 2-hydroxy-2-trifluoromethylchroman-4-ones (chromanones) in aqueous ethyleneglycol were studied. Replacement of hydrogen in the aromatic ring of the chromanones by CH3 or CF3 groups was shown to cause the molar extinction coefficients of the K, B, and C=O bands to shift from 16,160 to 27,980 and 30,250 dm3/mol·cm; from 12,750 to 17,920 and 16,130 dm3/mol·cm; and from 3850 to 3630 and 2760 dm3/mol·cm, respectively. Increasing the solution pH from 1 to 10.5 affected weakly the aromatic ring bands yet impacted greatly the chromanone carbonyl bands, causing their λmax to shift from 311-326 nm to 342-346 nm and their extinction coefficients to increase from 2760-3850 dm3/mol·cm to 9940-10,160 dm3/mol·cm. A further rise in the pH resulted in hypochromia of the carbonyl band due to the destruction of the chromanones. The results were confirmed by NMR spectroscopy and GC methods. © 2012 Springer Science+Business Media New York.en
dc.format.mimetypeapplication/pdfen
dc.language.isoenen
dc.rightsinfo:eu-repo/semantics/restrictedAccessen
dc.sourceJournal of Applied Spectroscopyen
dc.subjectABSORPTION SPECTRAen
dc.subjectCHROMAN-4-ONESen
dc.subjectEXTINCTION COEFFICIENTen
dc.subjectMEDIUM ACIDITYen
dc.titleStructure and absorption spectra of substituted 2-hydroxy-2-trifluoromethylchroman-4-onesen
dc.typeArticleen
dc.typeinfo:eu-repo/semantics/publishedVersionen
dc.typeinfo:eu-repo/semantics/articleen
dc.identifier.doi10.1007/s10812-012-9632-0-
dc.identifier.scopus84880277133-
local.contributor.employeeХамидуллина Лилия Альбертовнаru
local.contributor.employeeПузырев Игорь Сергеевичru
local.contributor.employeeПестов Александр Викторовичru
local.contributor.employeeМошкин Владимир Сергеевичru
local.description.firstpage509-
local.description.lastpage514-
local.issue4-
local.volume79-
dc.identifier.wos000309676900002-
local.contributor.departmentИнститут естественных наук и математикиru
local.contributor.departmentХимико-технологический институтru
local.identifier.pure1076513-
local.identifier.eid2-s2.0-84880277133-
local.identifier.wosWOS:000309676900002-
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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