Ion–Molecule Reactions as a Possible Synthetic Route for the Formation of Prebiotic Molecules in Space

Spezia, Riccardo; Jeanvoine, Yannick; Scuderi, Debora

doi:10.1007/978-3-319-95954-2_15

Cited by 2 publications

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“…[1][2][3] These reactions become important as compared to neutral species interactions due to the longrange electrostatic interactions occurring between molecule and ion. [4,5] The interstellar medium (ISM) has revealed the presence of over 50 ionic species, shedding light on the abundance of numerous other observed species. [3,6] Among the ionic molecules, COH + and HCO + are the only isomeric pairs of ions observed in ISM so far.…”

Section: Introductionmentioning

confidence: 99%

“…This is primarily driven by their crucial role in the synthesis of larger molecules within interstellar clouds [1–3] . These reactions become important as compared to neutral species interactions due to the longrange electrostatic interactions occurring between molecule and ion [4,5] . The interstellar medium (ISM) has revealed the presence of over 50 ionic species, shedding light on the abundance of numerous other observed species [3,6] .…”

Section: Introductionmentioning

confidence: 99%

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Rotational Transitions of COH⁺ and He: New Interaction Potential, Bound States, Scattering and Pressure Broadening Cross‐sections**

Ritika,

Dhilip Kumar

2023

ChemPhysChem

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We present new calculations of metastable isomer of HCO+, i.e., COH+ in collision with He. The COH+ has been suggested as an alternative H2 tracer, which makes it of great interest for astrophysical studies. COH+ was first observed in astronomical space towards SgrB2 with observation of J=1→0, J=2→1 and J=3→2 lines. Calculations are based on new ab initio potential energy surfaces (PES) of charged complex COH+‐He using the CCSD(T) in conjunction with aug‐cc‐pVQZ basis set. The PES has well depth of ‐836.5 cm−1 towards H‐end at the COH+−He distance (R) of 2.9 Å in linear orientation. To test the new PES, the calculations of bound‐state are carried out and pressure broadening cross‐sections of COH+ with He collisions are computed for kinetic energies up to 150 cm−1 using accurate close‐coupling method. Further, the pressure broadening and shift coefficients have been calculated from the corresponding real and imaginary parts of cross‐sections for first six rotational transitions. The data obtained is found to be in same order as the HCO+‐He system. Further, the results of rate coefficients are compared with reported COH+‐He and HCO+‐He data. The results generated by this study are believed to be useful for both laboratory and future astrophysical research.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rotational Transitions of COH⁺ and He: New Interaction Potential, Bound States, Scattering and Pressure Broadening Cross‐sections**

Ritika,

Dhilip Kumar

2023

ChemPhysChem

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Infrared‐Assisted Synthesis of Prebiotic Glycine

et al. 2020

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A novel approach has been developed to synthesize complex organic molecules (COMs) relevant to prebiotic chemistry, using infrared (IR) radiation to trigger the reaction. An original laboratory reactor working at low gas density and using IR irradiation was developed. In this way, glycine, the simplest brick of life, has been synthesized by assisting ion–molecule reaction with IR laser light. The ion‐molecule complex constituted by acetic acid and hydroxylamine was formed in a mass spectrometer reactor and then irradiated with IR photons. As photoproducts, we obtained both glycine structures and some of its isomers. Anharmonic vibrational frequency calculations and fragmentation dynamics simulations allow for a better interpretation of the experimental data. This novel approach can be now extended to study other new synthetic pathways responsible for the formation of further COMs also with potential prebiotic relevance.

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Ion–Molecule Reactions as a Possible Synthetic Route for the Formation of Prebiotic Molecules in Space

Cited by 2 publications

References 61 publications

Rotational Transitions of COH⁺ and He: New Interaction Potential, Bound States, Scattering and Pressure Broadening Cross‐sections**

Rotational Transitions of COH⁺ and He: New Interaction Potential, Bound States, Scattering and Pressure Broadening Cross‐sections**

Infrared‐Assisted Synthesis of Prebiotic Glycine

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Ion–Molecule Reactions as a Possible Synthetic Route for the Formation of Prebiotic Molecules in Space

Cited by 2 publications

References 61 publications

Rotational Transitions of COH+ and He: New Interaction Potential, Bound States, Scattering and Pressure Broadening Cross‐sections**

Rotational Transitions of COH+ and He: New Interaction Potential, Bound States, Scattering and Pressure Broadening Cross‐sections**

Infrared‐Assisted Synthesis of Prebiotic Glycine

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Product

Resources

About

Rotational Transitions of COH⁺ and He: New Interaction Potential, Bound States, Scattering and Pressure Broadening Cross‐sections**

Rotational Transitions of COH⁺ and He: New Interaction Potential, Bound States, Scattering and Pressure Broadening Cross‐sections**