Infrared Spectroscopy of CH 5 + Cations in Helium Nanodroplets
The methanium CH is a prototypical fluxional ion whose infrared spectra remain unassigned. Here we report on the infrared spectra of CH cations and its deuterated isotopomer, CH D , in helium droplets at a low temperature of 0.38 K. The ions were produced upon protonation of CH molecules, a techniqu...
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| Veröffentlicht in: | The journal of physical chemistry letters 2024-11, Vol.15 (44), p.10931-10936 |
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| container_title | The journal of physical chemistry letters |
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| creator | Singh, Amandeep Allison, Sofia H Azhagesan, Andrew Abishek A Verma, Deepak Vilesov, Andrey F |
| description | The methanium CH
is a prototypical fluxional ion whose infrared spectra remain unassigned. Here we report on the infrared spectra of CH
cations and its deuterated isotopomer, CH
D
, in helium droplets at a low temperature of 0.38 K. The ions were produced upon protonation of CH
molecules, a technique that was developed in this work. The spectra of CH
around 3000 cm
show two strong and broad infrared bands and a weak shoulder, reflecting its highly fluxional nature. The spectrum of CH
D
shows a much sharper infrared band, indicating a partial quenching of the exchange of H/D atoms. This work also reports on the infrared spectrum of the methane dimer radical cations (CH
)
. |
| doi_str_mv | 10.1021/acs.jpclett.4c02614 |
| format | Article |
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is a prototypical fluxional ion whose infrared spectra remain unassigned. Here we report on the infrared spectra of CH
cations and its deuterated isotopomer, CH
D
, in helium droplets at a low temperature of 0.38 K. The ions were produced upon protonation of CH
molecules, a technique that was developed in this work. The spectra of CH
around 3000 cm
show two strong and broad infrared bands and a weak shoulder, reflecting its highly fluxional nature. The spectrum of CH
D
shows a much sharper infrared band, indicating a partial quenching of the exchange of H/D atoms. This work also reports on the infrared spectrum of the methane dimer radical cations (CH
)
.</description><identifier>ISSN: 1948-7185</identifier><identifier>EISSN: 1948-7185</identifier><identifier>DOI: 10.1021/acs.jpclett.4c02614</identifier><identifier>PMID: 39447079</identifier><language>eng</language><publisher>United States</publisher><ispartof>The journal of physical chemistry letters, 2024-11, Vol.15 (44), p.10931-10936</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c679-f31cdb292e76f333b4b311f918f6012ceff91b192d9ea4f2d573dd830202b4483</cites><orcidid>0000-0001-8265-1453 ; 0000-0002-8412-817X ; 0000-0003-1568-2043 ; 0009-0004-2251-1749</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,2765,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/39447079$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Singh, Amandeep</creatorcontrib><creatorcontrib>Allison, Sofia H</creatorcontrib><creatorcontrib>Azhagesan, Andrew Abishek A</creatorcontrib><creatorcontrib>Verma, Deepak</creatorcontrib><creatorcontrib>Vilesov, Andrey F</creatorcontrib><title>Infrared Spectroscopy of CH 5 + Cations in Helium Nanodroplets</title><title>The journal of physical chemistry letters</title><addtitle>J Phys Chem Lett</addtitle><description>The methanium CH
is a prototypical fluxional ion whose infrared spectra remain unassigned. Here we report on the infrared spectra of CH
cations and its deuterated isotopomer, CH
D
, in helium droplets at a low temperature of 0.38 K. The ions were produced upon protonation of CH
molecules, a technique that was developed in this work. The spectra of CH
around 3000 cm
show two strong and broad infrared bands and a weak shoulder, reflecting its highly fluxional nature. The spectrum of CH
D
shows a much sharper infrared band, indicating a partial quenching of the exchange of H/D atoms. This work also reports on the infrared spectrum of the methane dimer radical cations (CH
)
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is a prototypical fluxional ion whose infrared spectra remain unassigned. Here we report on the infrared spectra of CH
cations and its deuterated isotopomer, CH
D
, in helium droplets at a low temperature of 0.38 K. The ions were produced upon protonation of CH
molecules, a technique that was developed in this work. The spectra of CH
around 3000 cm
show two strong and broad infrared bands and a weak shoulder, reflecting its highly fluxional nature. The spectrum of CH
D
shows a much sharper infrared band, indicating a partial quenching of the exchange of H/D atoms. This work also reports on the infrared spectrum of the methane dimer radical cations (CH
)
.</abstract><cop>United States</cop><pmid>39447079</pmid><doi>10.1021/acs.jpclett.4c02614</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0001-8265-1453</orcidid><orcidid>https://orcid.org/0000-0002-8412-817X</orcidid><orcidid>https://orcid.org/0000-0003-1568-2043</orcidid><orcidid>https://orcid.org/0009-0004-2251-1749</orcidid></addata></record> |
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| source | ACS Publications |
| title | Infrared Spectroscopy of CH 5 + Cations in Helium Nanodroplets |
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