New insight into the spectroscopy of LaH by ab-initio methods
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https://doi.org/10.1016/j.comptc.2021.113363 |
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Título
New insight into the spectroscopy of LaH by ab-initio methodsFecha de publicación
2021-07-10Editor
ElsevierCita bibliográfica
ASSAF, Joumana; ASSAF, Rima; NASCIMENTO, Erica CM. New insight into the spectroscopy of LaH by ab-initio methods. Computational and Theoretical Chemistry, 2021, vol. 1203, p. 113363.Tipo de documento
info:eu-repo/semantics/articleVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
By ab-initio methods, the spectroscopy of lanthanum hydride molecule LaH is predicted and the states involved in all the observed band systems are assigned. So, 34 low - lying 1,3Λ(±) states located below 31400 cm−1 ... [+]
By ab-initio methods, the spectroscopy of lanthanum hydride molecule LaH is predicted and the states involved in all the observed band systems are assigned. So, 34 low - lying 1,3Λ(±) states located below 31400 cm−1 are calculated and 67 Ω(±) states are generated by taking into account the spin–orbit coupling effect of lanthanum. For these states, the spectroscopic constants such as , , and are determined and the potential energy curves (PECs) are plotted in the range of internuclear distance from 1.00 Å to 3.00 Å. The calculated electronic configuration of 1,3Λ(±) states shows the ionic nature La+H- of this species. Moreover, the composition of the Ω(±) state-wave functions in term of Λ-S parent states are calculated at the equilibrium internuclear distance of the ground state. Indeed, this molecule belongs to Hund’s case (c) since the transition in many observed band systems only obeys the rule ΔΩ = 0, ±1. [-]
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Computational and Theoretical Chemistry, Vol. 1203, September 2021Derechos de acceso
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