2024-03-28T10:35:00Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1525782021-05-12T11:29:38Zcom_10261_14181com_10261_4com_10261_135col_10261_14184col_10261_514
Ab initio study on the photodissociation of CH3O and CH3S radicals : The effect of spin-orbit coupling
Bouallagui, A.
Zanchet, Alexandre
Jaidane, N.
Yazidi, O.
Senent, María Luisa
Bañares, Luis
García Vela, Alberto
MOLEC 2016, Toledo (Spain), 11 - 16 September 2016
The methoxy family CH3X (X = O, S) is a series of very interesting radicals from several perspectives [1]. They are important compounds in environmental and combustion chemistry, in astrophysics and atmospheric reactions. Numerous references to the practical importance of these radicals have been compiled [2]. Although the literature on CH3O and CH3S is quite extensive, the most germane works from the viewpoint of photodissociation dynamics are the spectroscopic [3] and theoretical investigations [1,4] of the electronic structure of methoxy. In the present work, new ab initio data have been calculated on the 2E, 2A1, 2A2, 4E, and 4A2 five electronic states of CH3O and CH3S that correlate with the asymptotes O(S)(3P) + CH3 and O(S)(1D) + CH3, including spin-orbit coupling for the first time. Potential energy surfaces for the above electronic states have been computed as a function of CO(CS) distance and OCH(SCH) angle under C3v symmetry, using multireference internally contracted single and double excitation configuration interaction method with the aug-cc-pCVQZ basis set. The possible photodissociation mechanisms of CH3O and CH3S are discussed in the light of these potentials.
Peer Reviewed
2017-07-11T08:00:25Z
2017-07-11T08:00:25Z
2016-09-11
2017-07-11T08:00:26Z
póster de congreso
http://purl.org/coar/resource_type/c_6670
XXI European Conference on the Dynamics of Molecular Systems (2016)
http://hdl.handle.net/10261/152578
Sí
open