Two infrared spectra are shown. One is the spectrum of cyclohexane, and the other is the spectrum of cyclohexene. Identify them, and explain your answer. (a) 100 * 80- 60 40- 20 4000 3500 3000 2500 2000 1500 1000 500 Wavenumber (cm-1) (b) 100 * 80- 60 40 20 Transmittance (%) Transmittance (%)

Two infrared spectra are shown. One is the spectrum of cyclohexane, and the other is the spectrum of cyclohexene. Identify them, and explain your answer. (a) 100 * 80- 60 40- 20 4000 3500 3000 2500 2000 1500 1000 500 Wavenumber (cm-1) (b) 100 * 80- 60 40 20 Transmittance (%) Transmittance (%)

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter20: Dienes, Conjugated Systems, And Pericyclic Reactions

Section20.3: Uv-visible Spectroscopy

Problem 20.5P

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Question

Two infrared spectra are shown. One is the spectrum of cyclohexane, and the other
is the spectrum of cyclohexene. Identify them, and explain your answer.
(a)
100
* 80
60
40
20
4000 3500
3000
2500
2000
1500
1000
500
Wavenumber (cm-1)
(b)
100
* 80
60
40
20
Transmittance (%)
Transmittance (%)

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