TY - JOUR
T1 - UV absorption spectrum and kinetics of the self-reaction of neopentyl radicals in the gas phase at 298 K
AU - Nielsen, O.J.
AU - Ellermann, T.
AU - Wallington, T.J.
PY - 1993
Y1 - 1993
N2 - Neopentyl radicals were produced via the reaction F+(CH3)4C-->(CH3)3CCH2+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, sigma((CH3)3CCH2) (240 nm) = (4.88 +/- 0.42) x 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) x 10(-11) cm3 molecule-1 s-1 (+/- 2sigma).
AB - Neopentyl radicals were produced via the reaction F+(CH3)4C-->(CH3)3CCH2+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, sigma((CH3)3CCH2) (240 nm) = (4.88 +/- 0.42) x 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) x 10(-11) cm3 molecule-1 s-1 (+/- 2sigma).
KW - Vurdering og begrænsning af industrielle miljøbelastninger
U2 - 10.1016/0009-2614(93)85405-D
DO - 10.1016/0009-2614(93)85405-D
M3 - Journal article
VL - 203
SP - 302
EP - 306
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 2-3
ER -