Dynamics of proton transfer from ArH+ to CO

Bastian, Björn; Carrascosa, Eduardo; Kaiser, Alexander; Meyer, Jennifer; Michaelsen, Tim; Czakó, Gábor; Hase, William L.; Wester, Roland

doi:10.1016/j.ijms.2018.12.004

Cited by 8 publications

(9 citation statements)

References 41 publications

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“…Furthermore, there is very little momentum transfer in the direct mechanism, and we observe only small angular deflection indicative of large impact parameters. This process could also be identified by both measuring differential cross sections and calculating quasi-classical trajectories in the proton transfer reaction ArH + +CO [43]. Since the two states CO + (X 2 + , ν = 6 i ,7 ii ) are the closest accessible ones to the reactant Ar + in its two spin-orbital states, this suggests a resonant charge transfer as the dominant mechanism [44].…”

Section: Discussionmentioning

confidence: 99%

Charge transfer dynamics in Ar⁺ + CO

et al. 2020

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Differential cross sections for the charge transfer reaction between Ar + and CO have been measured using three-dimensional velocity map imaging in a crossed beam setup at the two relative collision energies 0.55 and 0.74 eV. We find dominant forward scattering with CO + product ions predominantly in the vibrational levels ν = 6,7 of the electronic ground state X 2 + . This is indicative of a direct resonant mechanism for the two argon spin-orbit states. At both collision energies also an isotropic distribution with product ions exhibiting high internal excitation is observed. This is more pronounced at the higher collision energy, where the first electronically excited state A 2 + becomes accessible. We conclude that the A-state is partially populated by the product ions at 0.74 eV collision energy and suggest that the isotropic distribution stems from the formation of a charge-transfer complex, in concurrence with previously performed studies.

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Section: Discussionmentioning

confidence: 99%

Charge transfer dynamics in Ar⁺ + CO

et al. 2020

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“…Finally, it is worth noting that, unlike its composition on Earth, where 40 Ar dominates, the spectral analysis of the argon ISM showed preponderance of 36 Ar at 84.6% and 38 Ar at 15.4%, with minute traces of 40 Ar at 0.025% [2]. Since then, these astronomical discoveries have relaunched a great amount of theoretical and experimental investigations dealing with the ionic dimer ArH + and its isotopologues [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

The phenomena of radiative association and charge transfer observed in Ar ++ H and Ar + H + collisions

Talhi¹,

Bouledroua²

2022

J. Phys. B: At. Mol. Opt. Phys.

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The present theoretical work aims at the characterization of argonium, namely, the molecular ions ³⁶ArH⁺ and ³⁸ArH⁺, revealed recently in the Crab Nebula and the PKS 1823-211 galaxy. The intent is to scrutinize the radiative processes of association, Ar+H⁺→ArH⁺, and charge transfer, Ar⁺+H→Ar+H⁺. To accomplish these two tasks, the corresponding potential-energy curves and dipole moments are chosen in order to construct the ground and the two first excited ArH⁺ molecular states. Once all the required ArH⁺ curves are well established and their physical and spectroscopic values contrasted with previous published data, the cross sections, for the formation of the ionic dimer ArH⁺ by radiative association and for the radiative charge transfer in the Ar⁺+H collisions, are computed quantum-mechanically at lower and higher energies. Finally, the temperature-dependent rate coefficients are calculated, and the numerical results are discussed and fitted to a selected analytical expression.

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“…Over the years, a plethora of studies have been devoted to inspecting the spectroscopic properties 9 , 12 , 13 and formation reactions 14 – 16 of C–H bonds, primarily relying on the reactive scattering measurements 17 , 18 and crossed-beam ion-neutral reactions 15 , 19 . Reactive collisions involving substances containing H and C atoms have been shown to produce radicals or compounds with C–H bonds 20 , 21 .…”

Section: Introductionmentioning

confidence: 99%

“…The bimolecular interaction of the neutral/ionized molecular system H 2 + CO can yield organic compounds with C–H bonds, such as the formyl (HCO + ) cation, which holds great importance in various fields, including atmospheric chemistry 25 , combustion science 26 , and astrochemistry 27 . Previous studies on such reactions have predominantly relied on full intermolecular collisions and scattering measurements 14 , 15 , 19 , which, however, lack a definition of the spatiotemporal starting point for time-resolved studies. Experimental challenges associated with determining reaction time zero and the initial internuclear distance between the two reacting molecules have thus significantly impeded the investigation of the detailed mechanism and dynamics of bimolecular reaction processes.…”

Section: Introductionmentioning

confidence: 99%

Ultrafast photoinduced C-H bond formation from two small inorganic molecules

Jiang,

Huang,

et al. 2024

Nat Commun

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The formation of carbon-hydrogen (C-H) bonds via the reaction of small inorganic molecules is of great significance for understanding the fundamental transition from inorganic to organic matter, and thus the origin of life. Yet, the detailed mechanism of the C-H bond formation, particularly the time scale and molecular-level control of the dynamics, remain elusive. Here, we investigate the light-induced bimolecular reaction starting from a van der Waals molecular dimer composed of two small inorganic molecules, H2 and CO. Employing reaction microscopy driven by a tailored two-color light field, we identify the pathways leading to C-H photobonding thereby producing HCO+ ions, and achieve coherent control over the reaction dynamics. Using a femtosecond pump-probe scheme, we capture the ultrafast formation time, i.e., 198 ± 16 femtoseconds. The real-time visualization and coherent control of the dynamics contribute to a deeper understanding of the most fundamental bimolecular reactions responsible for C–H bond formation, thus contributing to elucidate the emergence of organic components in the universe.

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Dynamics of proton transfer from ArH+ to CO

Cited by 8 publications

References 41 publications

Charge transfer dynamics in Ar⁺ + CO

Charge transfer dynamics in Ar⁺ + CO

The phenomena of radiative association and charge transfer observed in Ar ++ H and Ar + H + collisions

Ultrafast photoinduced C-H bond formation from two small inorganic molecules

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Dynamics of proton transfer from ArH+ to CO

Cited by 8 publications

References 41 publications

Charge transfer dynamics in Ar+ + CO

Charge transfer dynamics in Ar+ + CO

The phenomena of radiative association and charge transfer observed in Ar ++ H and Ar + H + collisions

Ultrafast photoinduced C-H bond formation from two small inorganic molecules

Contact Info

Product

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Charge transfer dynamics in Ar⁺ + CO

Charge transfer dynamics in Ar⁺ + CO