The influence of double bonds on the Raman active longitudinal acoustical model(LAM) in trans-alkenes

Article abstract of DOI:10.1063/1.443201

Raman measurements on a series of trans-alkenes having the double bond at various locations along the backbone have been obtained.Compared to the n-alkanes, a dramatic decrease in the intensity of LAM-1 has been observed, while that of LAM-3 and LAM-5 remains relatively unchanged.Normal coordinate calculations indicate that in the trans alkenes there is a significant long-range coupling between longitudinal and transverse motion in LAM-1 due to the presence of the double bond which effectively diminishes its intensity.In LAM-3 and LAM-5 the longitudal/transversecoupling is less, and much more localized about the doublebond, preserving both the longitudal character and intensity of these modes.Raman intensity variations in the -CH2- bending region have been utilized to study the lateral packing of methylene groups in the crystalline subcell, and the trans-alkenes have been found to crystallize in structures analogous to their polyalkenamer counterparts.

Full text of DOI:10.1063/1.443201

The influence of double bonds on the Raman active longitudinal acoustical model
LAM) in t r a n salkenes
(
John F. Rabolt, R. Twieg, and C. Snyder
Citation: The Journal of Chemical Physics 76, 1646 (1982); doi: 10.1063/1.443201
View online: http://dx.doi.org/10.1063/1.443201
View Table of Contents: http://scitation.aip.org/content/aip/journal/jcp/76/4?ver=pdfcov
Published by the AIP Publishing
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
30.75.236.213 On: Sun, 23 Nov 2014 10:36:44
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
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