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@ARTICLE{Assaf:857257,
author = {Assaf, Emmanuel and Schoemaecker, Coralie and Vereecken,
Luc and Fittschen, Christa},
title = {{E}xperimental and theoretical investigation of the
reaction of {RO} 2 radicals with {OH} radicals: {D}ependence
of the {HO} 2 yield on the size of the alkyl group},
journal = {International journal of chemical kinetics},
volume = {50},
number = {9},
issn = {0538-8066},
address = {New York, NY},
publisher = {Wiley},
reportid = {FZJ-2018-06486},
pages = {670 - 680},
year = {2018},
abstract = {The HO2 yield in the reaction of peroxy radicals with OH
radicals has been determined experimentally at 50 Torr
helium by measuring simultaneously OH and HO2 concentration
time profiles, following the photolysis of XeF2 in the
presence of different hydrocarbons and O2. The following
yields have been obtained:
urn:x-wiley:05388066:media:kin21191:kin21191-math-0001 =
(0.90 ± 0.1),
urn:x-wiley:05388066:media:kin21191:kin21191-math-0002 =
(0.75 ± 0.15),
urn:x-wiley:05388066:media:kin21191:kin21191-math-0003 =
(0.41 ± 0.08), and
urn:x-wiley:05388066:media:kin21191:kin21191-math-0004 =
(0.15 ± 0.03). The clear decrease in HO2 yield with
increasing size of the alkyl moiety can be explained by an
increased stabilization of the trioxide adduct, ROOOH. This
has been confirmed by ab initio and
Rice–Ramsperger–Kassel–Marcus master equation
calculations. Extrapolation of the experimental results to
atmospheric conditions shows that the stabilized adduct,
ROOOH, is the nearly exclusive product of the reaction
between OH radicals and peroxy radicals containing more than
three C‐atoms. The fate and possible impact of these
species is completely unexplored so far.},
cin = {IEK-8},
ddc = {540},
cid = {I:(DE-Juel1)IEK-8-20101013},
pnm = {243 - Tropospheric trace substances and their
transformation processes (POF3-243)},
pid = {G:(DE-HGF)POF3-243},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000439930100005},
doi = {10.1002/kin.21191},
url = {https://juser.fz-juelich.de/record/857257},
}