Experimental Characterization of the Isomer-Selective Generation of the Astrochemically Relevant Hydroxymethylene Radical Cation (HCOH<SUP>•+</SUP>/DCOH<SUP>•+</SUP>)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F24%3A00600597" target="_blank" >RIV/61388955:_____/24:00600597 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0357905" target="_blank" >https://hdl.handle.net/11104/0357905</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpclett.4c02374" target="_blank" >10.1021/acs.jpclett.4c02374</a>
Alternative languages
Result language
angličtina
Original language name
Experimental Characterization of the Isomer-Selective Generation of the Astrochemically Relevant Hydroxymethylene Radical Cation (HCOH<SUP>•+</SUP>/DCOH<SUP>•+</SUP>)
Original language description
Interest in the observation and characterization of organic isomers in astronomical environments has grown rapidly with an increase in the sensitivity of detection techniques. Accurate modeling and interpretation of these environments require experimental isomer-specific reactivity and spectroscopic measurements. Given the abundance of formaldehyde (H2CO) in various astrophysical objects, the properties and reactivities of its cation isomers H2CO center dot+ and HCOH center dot+ are of significant interest. However, for the hydroxymethylene radical cation HCOH center dot+ (and its isotopologue DCOH center dot+), detailed reactivity studies have been limited by the lack of suitable experimental methods to generate this isomer with high purity. Here, potential approaches to the isomer-selective generation of HCOH center dot+ and DCOH center dot+ are characterized through differential reactivity measurements. While the dissociative photoionization of cyclopropanol (c-CH2CH2CHOH) is determined to be unsuitable, the dissociation of methanol-d(3) (CD3OH) allows for the formation of DCOH center dot+ with a fractional abundance of >99% at photon energies below 14.8 eV. These results will allow future spectroscopic and reactivity measurements of HCOH center dot+/DCOH center dot+ to be conducted, laying the groundwork for future detection and incorporation into models of the interstellar medium.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
<a href="/en/project/LTC20062" target="_blank" >LTC20062: Reactivity of negative ions in the gas phase</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physical Chemistry Letters
ISSN
1948-7185
e-ISSN
—
Volume of the periodical
15
Issue of the periodical within the volume
43
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
10888-10895
UT code for WoS article
001341497300001
EID of the result in the Scopus database
2-s2.0-85207721772