Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/10678
DC Field | Value | Language |
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dc.contributor.author | Lapinski, Leszek | - |
dc.contributor.author | Rostkowska, Hanna | - |
dc.contributor.author | Khvorostov, Artem | - |
dc.contributor.author | Fausto, Rui | - |
dc.contributor.author | Nowak, Maciej J. | - |
dc.date.accessioned | 2009-07-14T08:37:54Z | - |
dc.date.available | 2009-07-14T08:37:54Z | - |
dc.date.issued | 2003-08-07 | - |
dc.identifier.citation | The Journal of Physical Chemistry A. 107:31 (2003) 5913-5919 | en_US |
dc.identifier.issn | 1089-5639 | - |
dc.identifier.uri | https://hdl.handle.net/10316/10678 | - |
dc.description.abstract | Photoreactions induced by UV-B (290−320 nm) irradiation were studied for 1-methyl-2(1H)-pyrimidinone and 1-methylcytosine monomers isolated in low-temperature inert gas matrixes. A Norrish type I α-cleavage reaction leading to open-ring conjugated isocyanate was observed for 1-methyl-2(1H)-pyrimidinone. The structure of the photoproduct was identified by comparison of its experimental IR spectrum with the spectrum theoretically calculated at the DFT(B3LYP)/6-31++G(d,p) level. The main indication of isocyanate as a photoproduced species was the appearance in the infrared spectrum recorded after UV irradiation of a very strong band at a characteristic frequency of 2263 cm-1. Observation of a new band at nearly the same frequency in the spectrum of UV-irradiated monomeric 1-methylcytosine may suggest that also in the case of this compound a conjugated isocyanate is photoproduced. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | American Chemical Society | en_US |
dc.rights | openAccess | eng |
dc.title | Photochemical Ring-Opening Reaction in 2(1H)-Pyrimidinones: A Matrix Isolation Study | en_US |
dc.type | article | en_US |
dc.identifier.doi | 10.1021/jp035155i | - |
uc.controloAutoridade | Sim | - |
item.fulltext | Com Texto completo | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.openairetype | article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry Centre | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.orcid | 0000-0003-2896-4007 | - |
crisitem.author.orcid | 0000-0002-8264-6854 | - |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
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Photochemical Ring-Opening Reaction in 2(1H)-Pyrimidinones.pdf | 131.37 kB | Adobe PDF | View/Open |
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