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

Substance: allyl radical				Other Names: 

Formula: C3H5; CH2CH=CH2				CAS-No.: 1981-80-2

Study: uv absorption spectra


Authors: K. Tonokura, M. Koshi

Title: Absorption spectrum and cross sections of the allyl radical measured using cavity ring-down spectroscopy: The à <-- X band

Journal/Source: J. Phys. Chem. A, 104, 8456-8461, (2000); DOI: 10.1021/jp001129y


Data: table, diagram

Energy/Wavelength range: 375.50 - 412.00 nm

Resolution: 0.02 nm

Temperature: 297 K

Temperature dependence: no

Pressure/Concentration:

Phase: gas

pH:


Comments: Cavity ring-down spectroscopy (CRDS) was used to measure the electronic absorption spectrum of the allyl radical (CH2CHCH2) 
between 370 and 420 nm at 297 K.
The absorption cross section of the allyl radical at 402.9 nm was determined to be (2.0 ± 0.4) × 10-19 cm2 molecule-1.

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