Collisions of FeO+ with H-2 and He in a Cryogenic Ion Trap
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F16%3A10336648" target="_blank" >RIV/00216208:11310/16:10336648 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1002/cphc.201600753" target="_blank" >http://dx.doi.org/10.1002/cphc.201600753</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/cphc.201600753" target="_blank" >10.1002/cphc.201600753</a>
Alternative languages
Result language
angličtina
Original language name
Collisions of FeO+ with H-2 and He in a Cryogenic Ion Trap
Original language description
The nominal temperature range of cryogenic radio-frequency ion traps has recently been extended down to T=2.3K. Whereas in situ He tagging of mass-selected ions embedded in dense helium buffer gas is becoming common for recording IR spectra through photofragmentation of small and large ions, much less activity is devoted to the field of cold chemistry, which in this contribution means the two orders of magnitude extending from 300 to below 3K. The importance of this temperature range for understanding the dynamics of bi- and termolecular reactions is illustrated with new results for the time-honored reaction of FeO+ with H-2 obtained with the cryogenic ion trap ISORI in Prague. The rate coefficient for forming Fe++H2O increases steeply with decreasing temperature. In addition more product channels open up, such as the stabilized reaction-intermediate complexes H2FeO+ and He-n-FeO+ formed by ternary association with He. For the FeOH++H channel only a minor signal is observed. The rate coefficients provide deep insight into lifetimes, bottlenecks, and barriers impeding almost completely the exothermic, but spin-forbidden, reaction at room temperature. For some of the He-tagged ions, IR predissociation spectra are recorded. A breakthrough is obtaining the first spectrum of [(H-2)FeO](+), synthesized and tagged in situ with He. These results pave the way to study the structures of reaction intermediates stabilized in the gas phase by means of collisions with helium.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemphyschem : a European journal of chemical physics and physical chemistry
ISSN
1439-4235
e-ISSN
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Volume of the periodical
17
Issue of the periodical within the volume
22
Country of publishing house
DE - GERMANY
Number of pages
17
Pages from-to
3723-3739
UT code for WoS article
000388625000018
EID of the result in the Scopus database
2-s2.0-84990848510