File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Investigation of the short-time photodissociation dynamics of trans-1-bromo-2-iodoethane in the A-band absorption

TitleInvestigation of the short-time photodissociation dynamics of trans-1-bromo-2-iodoethane in the A-band absorption
Authors
KeywordsPhysics chemistry
Issue Date1999
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jcp.aip.org/jcp/staff.jsp
Citation
Journal of Chemical Physics, 1999, v. 110 n. 3, p. 1638-1649 How to Cite?
AbstractWe have obtained resonance Raman spectra and absolute Raman cross section measurements at five excitation wavelengths within the A-band absorption for 1-bromo-2-iodoethane in cyclohexane solution. The resonance Raman spectra have most of their intensity in the fundamentals, overtones, and combination bands of six Franck-Condon active vibrational modes; the nominal CCI bend, C-I stretch, C-Br stretch, C-C stretch, CH 2 wag with the Br atom attached to the CH 2 group, and CH 2 wag with the I atom attached to the CH 2 group. The resonance Raman intensities and A-band absorption spectrum were simulated using a simple model and time-dependent wave packet calculations. The simulation results and normal mode descriptions were used to find the short-time photodissociation dynamics in terms of internal coordinate displacements. The A-band short-time photodissociation dynamics for trans-1-bromo-2-iodoethane show that the C-I, C-Br, and C-C bonds as well as the CCI, CCBr, HCC, ICH, and BrCH angles have significant changes during the initial stages of the photodissociation reaction. This indicates the photodissociation reaction has a large degree of multidimensional character and suggests that the bromoethyl photofragment receives substantial internal excitation in so far as the short-time photodissociation dynamics determines the energy partitioning. Comparison of our results for 1-bromo-2-iodoethane with the A-band short-time dynamics of iodoethane, 1-chloro-2-iodoethane, and 1,2-diiodoethane and the trends observed for their A-band absorption spectra suggest that both the C-I and C-Br bonds experience a noticeable amount of photoexcitation. © 1999 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/42347
ISSN
2023 Impact Factor: 3.1
2023 SCImago Journal Rankings: 1.101
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZheng, Xen_HK
dc.contributor.authorPhillips, DLen_HK
dc.date.accessioned2007-01-29T08:47:29Z-
dc.date.available2007-01-29T08:47:29Z-
dc.date.issued1999en_HK
dc.identifier.citationJournal of Chemical Physics, 1999, v. 110 n. 3, p. 1638-1649-
dc.identifier.issn0021-9606en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42347-
dc.description.abstractWe have obtained resonance Raman spectra and absolute Raman cross section measurements at five excitation wavelengths within the A-band absorption for 1-bromo-2-iodoethane in cyclohexane solution. The resonance Raman spectra have most of their intensity in the fundamentals, overtones, and combination bands of six Franck-Condon active vibrational modes; the nominal CCI bend, C-I stretch, C-Br stretch, C-C stretch, CH 2 wag with the Br atom attached to the CH 2 group, and CH 2 wag with the I atom attached to the CH 2 group. The resonance Raman intensities and A-band absorption spectrum were simulated using a simple model and time-dependent wave packet calculations. The simulation results and normal mode descriptions were used to find the short-time photodissociation dynamics in terms of internal coordinate displacements. The A-band short-time photodissociation dynamics for trans-1-bromo-2-iodoethane show that the C-I, C-Br, and C-C bonds as well as the CCI, CCBr, HCC, ICH, and BrCH angles have significant changes during the initial stages of the photodissociation reaction. This indicates the photodissociation reaction has a large degree of multidimensional character and suggests that the bromoethyl photofragment receives substantial internal excitation in so far as the short-time photodissociation dynamics determines the energy partitioning. Comparison of our results for 1-bromo-2-iodoethane with the A-band short-time dynamics of iodoethane, 1-chloro-2-iodoethane, and 1,2-diiodoethane and the trends observed for their A-band absorption spectra suggest that both the C-I and C-Br bonds experience a noticeable amount of photoexcitation. © 1999 American Institute of Physics.en_HK
dc.format.extent196557 bytes-
dc.format.extent30208 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://jcp.aip.org/jcp/staff.jspen_HK
dc.relation.ispartofJournal of Chemical Physicsen_HK
dc.rightsCopyright 1999 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Chemical Physics, 1999, v. 110 n. 3, p. 1638-1649 and may be found at https://doi.org/10.1063/1.477805-
dc.subjectPhysics chemistryen_HK
dc.titleInvestigation of the short-time photodissociation dynamics of trans-1-bromo-2-iodoethane in the A-band absorptionen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-9606&volume=110&issue=3&spage=1638&epage=1649&date=1999&atitle=Investigation+of+the+short-time+photodissociation+dynamics+of+trans-1-bromo-2-iodoethane+in+the+A-band+absorptionen_HK
dc.identifier.emailPhillips, DL:phillips@hku.hken_HK
dc.identifier.authorityPhillips, DL=rp00770en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1063/1.477805en_HK
dc.identifier.scopuseid_2-s2.0-0001676891en_HK
dc.identifier.hkuros43762-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0001676891&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume110en_HK
dc.identifier.issue3en_HK
dc.identifier.spage1638en_HK
dc.identifier.epage1649en_HK
dc.identifier.isiWOS:000078030500035-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridZheng, X=7404090253en_HK
dc.identifier.scopusauthoridPhillips, DL=7404519365en_HK
dc.identifier.issnl0021-9606-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats