Charles M. Richards and J. Rud Nielsen, "Raman Spectra of Cis- and Trans-2-Butene in the Gaseous and Liquid States*," J. Opt. Soc. Am. 40, 442-445 (1950)
The Raman spectra of gaseous and liquid cis- and trans-2-butene have been obtained with a three-prism glass spectrograph of linear dispersion 15A/mm at 4358A, together with polarization data for these compounds in the liquid state. For each compound six or seven fundamentals have been added to previous assignments, and one change has been made in the latter. The observed spectra have been interpreted in detail.
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Doubtful frequencies and the corresponding symbols are placed in parenthesis. The superscripts refer to uncertainties as follow:
Depolarization ratio probably too low because of 2746 k.
Depolarization ratio may be too low because of 3023 i.
This band may be 2923 l.
Frequencies taken from the infra-red data (see reference 7) are marked with an asterisk in the last column. The superscripts refer to uncertainties as follows:
This transition is forbidden in the Raman effect but may be active in the liquid state.
This band may be 2734.9 l.
This band may be 2862 l.
This band may be 2948 l.
Doubtful frequencies and the corresponding symbols are placed in parenthesis. The superscripts refer to uncertainties as follow:
Depolarization ratio probably too low because of 2746 k.
Depolarization ratio may be too low because of 3023 i.
This band may be 2923 l.
Frequencies taken from the infra-red data (see reference 7) are marked with an asterisk in the last column. The superscripts refer to uncertainties as follows:
This transition is forbidden in the Raman effect but may be active in the liquid state.
This band may be 2734.9 l.
This band may be 2862 l.
This band may be 2948 l.