TY - JOUR
T1 - UV absorption spectrum and kinetics of the self-reaction of neopentyl radicals in the gas phase at 298 K
AU - Nielsen, Ole J.
AU - Ellermann, Thomas
AU - Wallington, Timothy J.
PY - 1993/2/19
Y1 - 1993/2/19
N2 - Neopentyl radicals were produced via the reaction F+(CH3)4C→(CH3)3CCH 2+HF, which was initiated by pulse radiolysis of neopentane/SF6 gas mixtures at 298 K. The ultraviolet absorption spectrum of neopentyl radicals has been recorded over the wavelength range 220-270 nm. An absorption cross section, σ(CH3)3CCH2 (240 nm)=(4.88±0.42) × 10-18 cm2 molecule-1, has been obtained based on absolute yields using CH3O2 as a reference. The decay of neopentyl radicals was found to follow second-order kinetics in accordance with the self-reaction 2(CH3)3CCH2→ products, with an absolute bimolecular rate constant of (2.1±0.2) × 10-11 cm3 molecule-1 s-1 (±2σ).
AB - Neopentyl radicals were produced via the reaction F+(CH3)4C→(CH3)3CCH 2+HF, which was initiated by pulse radiolysis of neopentane/SF6 gas mixtures at 298 K. The ultraviolet absorption spectrum of neopentyl radicals has been recorded over the wavelength range 220-270 nm. An absorption cross section, σ(CH3)3CCH2 (240 nm)=(4.88±0.42) × 10-18 cm2 molecule-1, has been obtained based on absolute yields using CH3O2 as a reference. The decay of neopentyl radicals was found to follow second-order kinetics in accordance with the self-reaction 2(CH3)3CCH2→ products, with an absolute bimolecular rate constant of (2.1±0.2) × 10-11 cm3 molecule-1 s-1 (±2σ).
UR - http://www.scopus.com/inward/record.url?scp=33744589225&partnerID=8YFLogxK
U2 - 10.1016/0009-2614(93)85405-D
DO - 10.1016/0009-2614(93)85405-D
M3 - Journal article
AN - SCOPUS:33744589225
SN - 0009-2614
VL - 203
SP - 302
EP - 306
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 2-3
ER -