Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/5071
DC FieldValueLanguage
dc.contributor.authorReva, I. D.-
dc.contributor.authorNowak, M. J.-
dc.contributor.authorLapinski, L.-
dc.contributor.authorFausto, R.-
dc.date.accessioned2008-09-01T15:03:27Z-
dc.date.available2008-09-01T15:03:27Z-
dc.date.issued2006en_US
dc.identifier.citationChemical Physics Letters. 429:4-6 (2006) 382-388en_US
dc.identifier.urihttp://hdl.handle.net/10316/5071-
dc.description.abstractPhotochemical transformations of methyl coumalate have been studied by matrix-isolation technique. Two photoreactions were induced by UV ([lambda] > 295 nm) light: isomerisation to the Dewar form and [alpha]-bond cleavage leading to the open-ring aldehyde-ketene. The first photoprocess was found to be strongly dominating. Experimental evidence of photoreversibility of both photoisomerisation processes has been provided. Upon [lambda] > 200 nm irradiation, the photochemically formed monomeric Dewar species underwent decarboxylation, with production of methoxycarbonyl-substituted cyclobutadiene. This antiaromatic photoproduct was experimentally observed for the first time. All the photoproduced species were identified by comparison of their IR spectra with the spectra calculated at the DFT(B3LYP)/6-311++G(d,p) level.en_US
dc.description.urihttp://www.sciencedirect.com/science/article/B6TFN-4KNM6J9-C/1/0d0e18c865aa8f1c05481a9479a09329en_US
dc.format.mimetypeaplication/PDFen
dc.language.isoengeng
dc.rightsopenAccesseng
dc.titleUV-induced photochemistry of methyl coumalate (methyl 2-pyrone-5-carboxylate) isolated in low-temperature inert matricesen_US
dc.typearticleen_US
dc.identifier.doi10.1016/j.cplett.2006.08.061-
uc.controloAutoridadeSim-
item.fulltextCom Texto completo-
item.grantfulltextopen-
item.languageiso639-1en-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.orcid0000-0001-5983-7743-
crisitem.author.orcid0000-0003-2896-4007-
crisitem.author.orcid0000-0002-8264-6854-
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais
Files in This Item:
File Description SizeFormat
file234f62f4837d49459aca1cc03c8f8fbc.pdf289.88 kBAdobe PDFView/Open
Show simple item record

WEB OF SCIENCETM
Citations

15
checked on Aug 2, 2022

Page view(s)

274
checked on Sep 28, 2022

Download(s)

259
checked on Sep 28, 2022

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.