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Article: Substituent effects on gas-phase photodissociation dynamics: Resonance Raman spectra of ethyl iodide, isopropyl iodide, and tert-butyl iodide

TitleSubstituent effects on gas-phase photodissociation dynamics: Resonance Raman spectra of ethyl iodide, isopropyl iodide, and tert-butyl iodide
Authors
Issue Date1991
Citation
Journal Of Physical Chemistry, 1991, v. 95 n. 23, p. 9085-9091 How to Cite?
AbstractWe report resonance Raman spectra of photodissociattng ethyl, isopropyl, and tert-butyl iodide in the gas phase in order to study the effects that changes in the mass and branching of the alkyl group have on the dissociation. These resonance Raman spectra at 266-nm excitation are compared with preresonant spectra taken with 355-nm excitation and previously published 266-nm spectra of methyl iodide. The dissociation coordinate appears to be primarily in the direction of the C-I stretch motion, but there are significant contributions from bending motions about the α-carbon. The bending motions appear to become more important as the alkyl group mass and the branching about the α-carbon increase. These gas-phase resonance Raman spectra are compared with similar measurements made in solution. This comparison reveals that overall the short-time dissociation dynamics of the isolated and solvated molecules are similar, but there are some significant differences. © 1991 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/167313
ISSN
1998 Impact Factor: 4.173
1999 SCImago Journal Rankings: 1.721
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorPhillips, DLen_US
dc.contributor.authorLawrence, BAen_US
dc.contributor.authorValentini, JJen_US
dc.date.accessioned2012-10-08T03:05:33Z-
dc.date.available2012-10-08T03:05:33Z-
dc.date.issued1991en_US
dc.identifier.citationJournal Of Physical Chemistry, 1991, v. 95 n. 23, p. 9085-9091en_US
dc.identifier.issn0022-3654en_US
dc.identifier.urihttp://hdl.handle.net/10722/167313-
dc.description.abstractWe report resonance Raman spectra of photodissociattng ethyl, isopropyl, and tert-butyl iodide in the gas phase in order to study the effects that changes in the mass and branching of the alkyl group have on the dissociation. These resonance Raman spectra at 266-nm excitation are compared with preresonant spectra taken with 355-nm excitation and previously published 266-nm spectra of methyl iodide. The dissociation coordinate appears to be primarily in the direction of the C-I stretch motion, but there are significant contributions from bending motions about the α-carbon. The bending motions appear to become more important as the alkyl group mass and the branching about the α-carbon increase. These gas-phase resonance Raman spectra are compared with similar measurements made in solution. This comparison reveals that overall the short-time dissociation dynamics of the isolated and solvated molecules are similar, but there are some significant differences. © 1991 American Chemical Society.en_US
dc.languageengen_US
dc.relation.ispartofJournal of Physical Chemistryen_US
dc.titleSubstituent effects on gas-phase photodissociation dynamics: Resonance Raman spectra of ethyl iodide, isopropyl iodide, and tert-butyl iodideen_US
dc.typeArticleen_US
dc.identifier.emailPhillips, DL:phillips@hku.hken_US
dc.identifier.authorityPhillips, DL=rp00770en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1021/j100176a014-
dc.identifier.scopuseid_2-s2.0-0000987039en_US
dc.identifier.volume95en_US
dc.identifier.issue23en_US
dc.identifier.spage9085en_US
dc.identifier.epage9091en_US
dc.identifier.isiWOS:A1991GQ45700014-
dc.identifier.scopusauthoridPhillips, DL=7404519365en_US
dc.identifier.scopusauthoridLawrence, BA=36900494600en_US
dc.identifier.scopusauthoridValentini, JJ=7003875862en_US

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