Cold Ion-Molecule Chemistry: The Very Different Reactions of He+ with CO and NO
The ion-molecule reactions He+ + CO → He + C+ + O and He+ + NO → He + N+ + O have been measured at collision energies between 0 and kB · 10 K. Strong variations of the rate coefficients are observed below kB · 5 K. The rate of the He+ + CO reaction decreases by ~30% whereas that of the He+ + NO rea...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | deu |
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Swiss Chemical Society
2023-04-01
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| Series: | CHIMIA |
| Subjects: | |
| Online Access: | https://www.chimia.ch/chimia/article/view/6943 |
| _version_ | 1797826478199537664 |
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| author | Fernanda B. V. Martins Valentina Zhelyazkova Andreas Osterwalder Frédéric Merkt |
| author_facet | Fernanda B. V. Martins Valentina Zhelyazkova Andreas Osterwalder Frédéric Merkt |
| author_sort | Fernanda B. V. Martins |
| collection | DOAJ |
| description |
The ion-molecule reactions He+ + CO → He + C+ + O and He+ + NO → He + N+ + O have been measured at collision energies between 0 and kB · 10 K. Strong variations of the rate coefficients are observed below kB · 5 K. The rate of the He+ + CO reaction decreases by ~30% whereas that of the He+ + NO reaction increases by a factor of ~1.5. These observations are interpreted in the realm of an adiabatic-channel capture model as arising from interactions between the ion charge and the dipole and quadrupole moments of CO and NO. We show that the different low-energy behavior of these reactions originates from the closed- vs. open-shell electronic structures of CO and NO.
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| first_indexed | 2024-04-09T12:33:23Z |
| format | Article |
| id | doaj.art-4f290497fd704a6eb3e4b217cda2defc |
| institution | Directory Open Access Journal |
| issn | 0009-4293 2673-2424 |
| language | deu |
| last_indexed | 2024-04-09T12:33:23Z |
| publishDate | 2023-04-01 |
| publisher | Swiss Chemical Society |
| record_format | Article |
| series | CHIMIA |
| spelling | doaj.art-4f290497fd704a6eb3e4b217cda2defc2023-05-16T00:10:58ZdeuSwiss Chemical SocietyCHIMIA0009-42932673-24242023-04-0177410.2533/chimia.2023.221Cold Ion-Molecule Chemistry: The Very Different Reactions of He+ with CO and NOFernanda B. V. Martins0Valentina Zhelyazkova1Andreas Osterwalder2Frédéric Merkt3Laboratory of Physical Chemistry, ETH Zurich, CH-8093 ZurichLaboratory of Physical Chemistry, ETH Zurich, CH-8093 ZurichLaboratory of Physical Chemistry, ETH Zurich, CH-8093 Zurich, Institute for Chemical Sciences and Engineering, EPFL, CH-1015 Lausanne, SwitzerlandLaboratory of Physical Chemistry, ETH Zurich, CH-8093 Zurich The ion-molecule reactions He+ + CO → He + C+ + O and He+ + NO → He + N+ + O have been measured at collision energies between 0 and kB · 10 K. Strong variations of the rate coefficients are observed below kB · 5 K. The rate of the He+ + CO reaction decreases by ~30% whereas that of the He+ + NO reaction increases by a factor of ~1.5. These observations are interpreted in the realm of an adiabatic-channel capture model as arising from interactions between the ion charge and the dipole and quadrupole moments of CO and NO. We show that the different low-energy behavior of these reactions originates from the closed- vs. open-shell electronic structures of CO and NO. https://www.chimia.ch/chimia/article/view/6943Cold ion chemistryDipole momentQuadrupole momentRydberg atoms |
| spellingShingle | Fernanda B. V. Martins Valentina Zhelyazkova Andreas Osterwalder Frédéric Merkt Cold Ion-Molecule Chemistry: The Very Different Reactions of He+ with CO and NO CHIMIA Cold ion chemistry Dipole moment Quadrupole moment Rydberg atoms |
| title | Cold Ion-Molecule Chemistry: The Very Different Reactions of He+ with CO and NO |
| title_full | Cold Ion-Molecule Chemistry: The Very Different Reactions of He+ with CO and NO |
| title_fullStr | Cold Ion-Molecule Chemistry: The Very Different Reactions of He+ with CO and NO |
| title_full_unstemmed | Cold Ion-Molecule Chemistry: The Very Different Reactions of He+ with CO and NO |
| title_short | Cold Ion-Molecule Chemistry: The Very Different Reactions of He+ with CO and NO |
| title_sort | cold ion molecule chemistry the very different reactions of he with co and no |
| topic | Cold ion chemistry Dipole moment Quadrupole moment Rydberg atoms |
| url | https://www.chimia.ch/chimia/article/view/6943 |
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