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Article: Time-resolved resonance Raman identification and structural characterization of a light absorbing transient intermediate in the photoinduced reaction of benzophenone in 2-propanol

TitleTime-resolved resonance Raman identification and structural characterization of a light absorbing transient intermediate in the photoinduced reaction of benzophenone in 2-propanol
Authors
Issue Date2007
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/joc
Citation
Journal Of Organic Chemistry, 2007, v. 72 n. 19, p. 7148-7156 How to Cite?
Abstract(Chemical Equation Presented) A nanosecond time-resolved resonance Raman (ns-TR 3) spectroscopic study of the triplet state benzophenone reaction with the 2-propanol hydrogen-donor solvent and subsequent reactions is presented. The TR 3 spectra show that the benzophenone triplet state (nπ*) hydrogen-abstraction reaction with 2-propanol is very fast (about 10 to 20 ns) and forms a diphenylketyl radical and an associated 2-propanol radical partner. The temporal evolution of the TR 3 spectra also indicates that recombination of these two radical species occurs with a time constant of about 1170 ns to produce a LAT (light absorbing transient) intermediate that is identified as the 2-[4-(hydroxylphenylmethylene)cyclohexa- 2,5-dienyl]propan-2-ol (p-LAT) species. Comparison of the TR 3 spectra with results obtained from density functional theory calculations for the species of interest was used to elucidate the identity, structure, properties, and major spectral features of the intermediates observed in the TR 3 spectra. The structures and properties of the reaction intermediates observed (triplet benzophenone, diphenyl ketyl radical, and p-LAT) are briefly discussed. © 2007 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/68942
ISSN
2015 Impact Factor: 4.785
2015 SCImago Journal Rankings: 2.095
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorDu, Yen_HK
dc.contributor.authorMa, Cen_HK
dc.contributor.authorWai, MKen_HK
dc.contributor.authorXue, Jen_HK
dc.contributor.authorPhillips, DLen_HK
dc.date.accessioned2010-09-06T06:09:07Z-
dc.date.available2010-09-06T06:09:07Z-
dc.date.issued2007en_HK
dc.identifier.citationJournal Of Organic Chemistry, 2007, v. 72 n. 19, p. 7148-7156en_HK
dc.identifier.issn0022-3263en_HK
dc.identifier.urihttp://hdl.handle.net/10722/68942-
dc.description.abstract(Chemical Equation Presented) A nanosecond time-resolved resonance Raman (ns-TR 3) spectroscopic study of the triplet state benzophenone reaction with the 2-propanol hydrogen-donor solvent and subsequent reactions is presented. The TR 3 spectra show that the benzophenone triplet state (nπ*) hydrogen-abstraction reaction with 2-propanol is very fast (about 10 to 20 ns) and forms a diphenylketyl radical and an associated 2-propanol radical partner. The temporal evolution of the TR 3 spectra also indicates that recombination of these two radical species occurs with a time constant of about 1170 ns to produce a LAT (light absorbing transient) intermediate that is identified as the 2-[4-(hydroxylphenylmethylene)cyclohexa- 2,5-dienyl]propan-2-ol (p-LAT) species. Comparison of the TR 3 spectra with results obtained from density functional theory calculations for the species of interest was used to elucidate the identity, structure, properties, and major spectral features of the intermediates observed in the TR 3 spectra. The structures and properties of the reaction intermediates observed (triplet benzophenone, diphenyl ketyl radical, and p-LAT) are briefly discussed. © 2007 American Chemical Society.en_HK
dc.languageengen_HK
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/jocen_HK
dc.relation.ispartofJournal of Organic Chemistryen_HK
dc.titleTime-resolved resonance Raman identification and structural characterization of a light absorbing transient intermediate in the photoinduced reaction of benzophenone in 2-propanolen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-3263&volume=72&spage=7148&epage=7156&date=2007&atitle=Time-Resolved+Resonance+Raman+Identification+and+Structural+Characterization+of+a+Light+Absorbing+Transient+Intermediate+in+the+Photoinduced+Reaction+of+Benzophenone+in+2-Propanolen_HK
dc.identifier.emailMa, C:macs@hkucc.hku.hken_HK
dc.identifier.emailPhillips, DL:phillips@hku.hken_HK
dc.identifier.authorityMa, C=rp00758en_HK
dc.identifier.authorityPhillips, DL=rp00770en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/jo070958den_HK
dc.identifier.scopuseid_2-s2.0-34548733082en_HK
dc.identifier.hkuros143580en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34548733082&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume72en_HK
dc.identifier.issue19en_HK
dc.identifier.spage7148en_HK
dc.identifier.epage7156en_HK
dc.identifier.isiWOS:000249371200009-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridDu, Y=35310175500en_HK
dc.identifier.scopusauthoridMa, C=7402924979en_HK
dc.identifier.scopusauthoridWai, MK=8761955300en_HK
dc.identifier.scopusauthoridXue, J=23007272500en_HK
dc.identifier.scopusauthoridPhillips, DL=7404519365en_HK

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