Quantum calculations of the photoelectron spectra of the OH-·NH3 anion: implications for OH + NH3â H2O + NH2 reaction dynamics.
Phys Chem Chem Phys
; 23(11): 6950-6958, 2021 Mar 21.
Article
em En
| MEDLINE
| ID: mdl-33729225
ABSTRACT
We present the results of quantum dynamics calculations for analyzing the experimentally measured photoelectron spectra of the OH-·NH3 anion complex. Detachment of an excess electron of OH-·NH3 initially produces a molecular arrangement, which is close to the transition-state structure of the neutral OH + NH3â H2O + NH2 hydrogen abstraction reaction due to the Franck-Condon principle, and thus finally leads to the OH + NH3 or H2O + NH2 asymptotic channel. We used both the path integral method and the reduced-dimensionality quantum wave packet method to simulate the photoelectron spectra of the OH-·NH3 anion. The calculated spectra were found to be in qualitative agreement with the experimental spectra. It was found that the photodetached complex mainly dissociates into the OH + NH3 channel; however, we found that the hydrogen exchange process also contributes to the photodetachment spectra.
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01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Qualitative_research
Idioma:
En
Revista:
Phys Chem Chem Phys
Ano de publicação:
2021
Tipo de documento:
Article