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1. Raman spectral behavior of N 2 , CO 2 , and CH 4 in N 2 –CO 2 –CH 4 gas mixtures from 22°C to 200°C and 10 to 500 bars, with application to other gas mixtures

   https://doi.org/10.1002/jrs.6033  

   Sublett, Jr, D. Matthew ; Sendula, Eszter ; Lamadrid, Hector M. ; Steele‐MacInnis, Matthew ; Spiekermann, Georg ; Bodnar, Robert J. ( November 2020 , Journal of Raman Spectroscopy)

   The Raman spectral behavior of N₂, CO₂, and CH₄in ternary N₂–CO₂–CH₄mixtures was studied from 22°C to 200°C and 10 to 500 bars. The peak position of N₂in all mixtures is located at lower wavenumbers compared with pure N₂at the same pressure (P)–temperature (T) (PT) conditions. The Fermi diad splitting in CO₂is greater in the pure system than in the mixtures, and the Fermi diad splitting increases in the mixtures as CO₂concentration increases at constantPandT. The peak position of CH₄in the mixtures is shifted to higher wavenumbers compared with pure CH₄at the samePTconditions. However, the relationship between peak position and CH₄mole fraction is more complicated compared with the trends observed with N₂and CO₂. The relative order of the peak position isotherms of CH₄and N₂in the mixtures in pressure–peak position space mimics trends in the molar volume of the mixtures in pressure–molar volume space. Relationships between the direction of peak shift of individual components in the mixtures, the relative molar volumes of the mixtures, and the attraction and repulsion forces between molecules are developed. Additionally, the relationship between the peak position of N₂in ternary N₂–CO₂–CH₄mixtures with pressure is extended to other N₂‐bearing systems to assess similarities in the Raman spectral behavior of N₂in various systems.

    

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2. Formation and hydrolysis of gas-phase [UO 2 (R)] + : R═CH 3 , CH 2 CH 3 , CH═CH 2 , and C 6 H 5

   https://doi.org/10.1002/jms.4430  

   Tatosian, Irena ; Bubas, Amanda ; Iacovino, Anna ; Kline, Susan ; Metzler, Luke ; Van Stipdonk, Michael ( September 2019 , Journal of Mass Spectrometry)
3. Gas-phase diagnostics during H 2 and H 2 O plasma treatment of SnO 2 nanomaterials: Implications for surface modification

   https://doi.org/10.1116/1.4976534  

   Stuckert, Erin P. ; Miller, Christopher J. ; Fisher, Ellen R. ( March 2017 , Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena)
4. Gas-Phase Preparation of 1-Germavinylidene (H 2 CGe; X 1 A 1 ), the Isovalent Counterpart of Vinylidene (H 2 CC; X 1 A 1 ), via Non-adiabatic Dynamics through the Elementary Reaction of Ground State Atomic Carbon (C; 3 P) with Germane (GeH 4 ; X 1 A 1 )

   https://doi.org/10.1021/acs.jpclett.2c03749  

   Yang, Zhenghai ; Sun, Bing-Jian ; He, Chao ; Li, Jin-Qi ; Chang, Agnes H. ; Kaiser, Ralf I. ( January 2023 , The Journal of Physical Chemistry Letters)
5. Chemical dynamics study on the gas-phase reaction of the D1-silylidyne radical (SiD; X 2 Π) with deuterium sulfide (D 2 S) and hydrogen sulfide (H 2 S)

   https://doi.org/10.1039/d1cp01629f  

   Goettl, Shane J. ; Doddipatla, Srinivas ; Yang, Zhenghai ; He, Chao ; Kaiser, Ralf I. ; Silva, Mateus X. ; Galvão, Breno R. ; Millar, Tom J. ( June 2021 , Physical Chemistry Chemical Physics)

   The reactions of the D1-silylidyne radical (SiD; X 2 Π) with deuterium sulfide (D 2 S; X 1 A 1 ) and hydrogen sulfide (H 2 S; X 1 A 1 ) were conducted utilizing a crossed molecular beams machine under single collision conditions. The experimental work was carried out in conjunction with electronic structure calculations. The elementary reaction commences with a barrierless addition of the D1-silylidyne radical to one of the non-bonding electron pairs of the sulfur atom of hydrogen (deuterium) sulfide followed by possible bond rotation isomerization and multiple atomic hydrogen (deuterium) migrations. Unimolecular decomposition of the reaction intermediates lead eventually to the D1-thiosilaformyl radical (DSiS) (p1) and D2-silanethione (D 2 SiS) (p3) via molecular and atomic deuterium loss channels (SiD–D 2 S system) along with the D1-thiosilaformyl radical (DSiS) (p1) and D1-silanethione (HDSiS) (p3) through molecular and atomic hydrogen ejection (SiD–H 2 S system) via indirect scattering dynamics in barrierless and overall exoergic reactions. Our study provides a look into the complex dynamics of the silicon and sulfur chemistries involving multiple deuterium/hydrogen shifts and tight exit transition states, as well as insight into silicon- and sulfur-containing molecule formation pathways in deep space. Although neither of the non-deuterated species – the thiosilaformyl radical (HSiS) and silanethione (H 2 SiS) – have been observed in the interstellar medium (ISM) thus far, astrochemical models presented here predict relative abundances in the Orion Kleinmann-Low nebula to be sufficiently high enough for detection. 

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