Effect of irradiation on ethyl 2-amino-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate: an ESR study

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dc.contributor.authorUsta, Ayhan
dc.contributor.authorBirey, Mehmet
dc.contributor.authorSari, Nursen
dc.contributor.authorAltundas, Aliye
dc.contributor.authorNartop, Dilek
dc.date.accessioned2020-03-26T18:25:02Z
dc.date.available2020-03-26T18:25:02Z
dc.date.issued2012
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractEthyl 2-amino-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate [C11H15NO2S] was synthesized by the Gewald method. Its single crystals were grown from an alcohol/ethyl acetate solution at 15 degrees C and characterized using IR and 1H-NMR. These single crystals were irradiated for 72h at 298K by a 60Co gamma source with a dose speed of 0.864kGy/h. After irradiation, electron spin resonance (ESR) measurements were carried out to study radiation-induced radicals in the temperature range from 120 to 450K. Additionally, for the single crystal, ESR angular dependencies were measured in the xy, xz and yz planes of the substance. This irradiated single crystal was analyzed based on the ESR spectra. Analysis of the spectra revealed that the radical was formed by a CH bond fission at the carbon end of the substance. It was also observed that the color of the sample changed after irradiation. The hyperfine and g parameters were determined from the experimental spectra. It was inferred from these results that the hyperfine parameters and g value exhibited anisotropic behavior. The average values of these parameters were calculated as follows: g=2.0088, AH1=H2=20.70G, AH3=H4=10.80G, AHa=4.59G, AHb=3.24G and, AN=6.10G. Copyright (c) 2011 John Wiley & Sons, Ltd.en_US
dc.description.sponsorshipSelcuk UniversitySelcuk University [10401043]; Gazi UniversityGazi University [05/2009-20]en_US
dc.description.sponsorshipThe authors thank the Selcuk University Scientific Research Fund (Project number: 10401043) and Gazi University Scientific Research Fund (Project number: 05/2009-20) for the financial support provided for this study.en_US
dc.identifier.doi10.1002/poc.1915en_US
dc.identifier.endpage313en_US
dc.identifier.issn0894-3230en_US
dc.identifier.issue4en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage309en_US
dc.identifier.urihttps://dx.doi.org/10.1002/poc.1915
dc.identifier.urihttps://hdl.handle.net/20.500.12395/27946
dc.identifier.volume25en_US
dc.identifier.wosWOS:000302004200007en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherWILEY-BLACKWELLen_US
dc.relation.ispartofJOURNAL OF PHYSICAL ORGANIC CHEMISTRYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectelectron spin resonanceen_US
dc.subjectethyl-amino-4en_US
dc.subject5en_US
dc.subject6en_US
dc.subject7-tetrahydrobenzo[b]thiophene-3-carboxylateen_US
dc.subjectGewald methoden_US
dc.subjectirradiation effectsen_US
dc.subjectradicalen_US
dc.titleEffect of irradiation on ethyl 2-amino-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate: an ESR studyen_US
dc.typeArticleen_US

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