science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2019

Substance: cyclopentene					Other Names: 1-cyclopentene

Formula: C5H8						CAS-No.: 142-29-0

Study: uv absorption spectrum

                
Authors: L.W. Pickett, M. Muntz, E.M. McPherson

Title: Vacuum Ultraviolet Absorption Spectra of Cyclic Compounds. I. Cyclohexane, Cyclohexene, Cyclopentane, Cyclopentene and Benzene

Journal/Source: J. Am. Chem. Soc., 73 (10), 4862-4865, (1951); DOI: 10.1021/ja01154a116


Data: diagram, table

EnergyWavelength range: 47000 - 65000 cm-1 (~ 154 - 212 nm)

Resolution: 

Temperature: 

Temperature dependence: no

Pressure/Concentration: 

Phase: vapor 

pH:


Comments: The far uv absorption spectra of Cyclohexane, Cyclohexene, Cyclopentane, Cyclopentene and Benzene have been
measured between 45000 and 64000 cm-1.
Values of Oscillator Strengths:
cm-1		f-value (calculated from the area under the curve by the formula f = 4.32 x 10-9 Integral Edv)
47600 - 50000	0.004
50000 - 64000	0.32
The first band of cyclopentene consists of a long succession of narrow shallow bands with separations averaging 130 cm-1 which are believed to
represent vibrations of the ring.

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