A theoretical-spectroscopy, ab-initio-based study of the electronic ground state of 121SbH3
For the stibine isotopologue (SbH3)-Sb-121, we report improved theoretical calculations of the vibrational energies below 8000 cm- and simulations of the rovibrational spectrum in the 0-8000 cm(-1) region. The calculations are based on a refined ab initio potential energy surface and on a new dipole...
| Autores: | , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2010 |
| País: | España |
| Recursos: | Universidad de Huelva (UHU) |
| Repositorio: | Arias Montano. Repositorio Institucional de la Universidad de Huelva |
| Idioma: | inglés |
| OAI Identifier: | oai:ariasmontano.uhu.es:10272/5403 |
| Acesso em linha: | http://hdl.handle.net/10272/5403 |
| Access Level: | acceso abierto |
| Palavra-chave: | Rotation-vibration motion Potential-energy- surfaces Fundamental bands XY3 molecules Dipole-moment Transition moments Overtone spectrum Eckart frame Basis-sets Stibine |
| Resumo: | For the stibine isotopologue (SbH3)-Sb-121, we report improved theoretical calculations of the vibrational energies below 8000 cm- and simulations of the rovibrational spectrum in the 0-8000 cm(-1) region. The calculations are based on a refined ab initio potential energy surface and on a new dipole moment surface obtained at the coupled cluster CCSD(T) level. The theoretical results are compared with the available experimental data in order to validate the ab initio surfaces and the TROVE computational method [Yurchenko SN, Thiel vv, Jensen P.J mol Spectrosc 2007;245:126-40] for calculating rovibrational energies and simulating rovibrational spectra of arbitrary molecules in isolated electronic states. A number of predicted vibrational energies of (SbH3)-Sb-121 are provided in order to stimulate new experimental investigations of stibine. The localmode character of the vibrations in stibine is demonstrated through an analysis of the results in terms of local-mode theory |
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