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@ARTICLE{Nozire:866657,
author = {Nozière, Barbara and Vereecken, Luc},
title = {{D}irect {O}bservation of {A}liphatic {P}eroxy {R}adical
{A}utoxidation and {W}ater {E}ffects: {A}n {E}xperimental
and {T}heoretical {S}tudy},
journal = {Angewandte Chemie / International edition International
edition},
volume = {58},
number = {39},
issn = {1433-7851},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2019-05736},
pages = {13976 - 13982},
year = {2019},
abstract = {The autoxidation of organic peroxy radicals (RO2) into
hydroperoxy‐alkyl radicals (QOOH), then
hydroperoxy‐peroxy radicals (HOOQO2) is now considered to
be important in the Earth's atmosphere. To avoid mechanistic
uncertainties these reactions are best studied by monitoring
the radicals. But for the volatile and aliphatic RO2
radicals playing key roles in the atmosphere this has long
been an instrumental challenge. This work reports the first
study of the autoxidation of aliphatic RO2 radicals and is
based on monitoring RO2 and HOOQO2 radicals. The rate
coefficients, kiso (s−1), were determined both
experimentally and theoretically using MC‐TST kinetic
theory based on CCSD(T)//M06‐2X quantum chemical
methodologies. The results were in excellent agreement and
confirmed that the first H‐migration is strongly
rate‐limiting in the oxidation of non‐oxygenated
volatile organic compounds (VOCs). At higher relative
humidity $(2–30 \%)$ water complexes were evidenced for
HOOQO2 radicals, which could be an important fate for
HOO‐substituted RO2 radicals in the atmosphere.},
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},
pubmed = {pmid:31361086},
UT = {WOS:000482403100001},
doi = {10.1002/anie.201907981},
url = {https://juser.fz-juelich.de/record/866657},
}