High-resolution Fourier transform emission spectroscopy of the Aâ¼2Πi-Xâ¼2Πi band of the OCS+ ion.
J Chem Phys
; 146(14): 144302, 2017 Apr 14.
Article
em En
| MEDLINE
| ID: mdl-28411593
ABSTRACT
High resolution Fourier transform emission spectroscopy of the Aâ¼2Πi-Xâ¼2Πi band of the OCS+ ion was performed in the UV region to observe the ν1 (CO stretch) progression bands (υ1 = 0 â 2-5) for both the Ω=3/2 and 1/2 spin components. Accurate molecular constants including the rotational constants, B0 = 0.194 765(13) and 0.187 106(13) cm-1, and the spin-orbit interaction constants, A0 = -381.0(56) and -126.5(56) cm-1, were determined for the Xâ¼2Π and Aâ¼2Π states, respectively, by the simultaneous analysis of the observed progression bands. The CO bond length (rCO = 1.2810 Å) for the Aâ¼2Π state, derived from the rotational constant B0 and Franck-Condon factors, is longer by 0.1756 Å than that (1.1054 Å) for the Xâ¼2Π state, while the CS bond length for the Aâ¼2Π state is shorter by 0.0905 Å than that for the Xâ¼2Π state. Pure rotational transition frequencies in the ground Xâ¼2Π state are predicted, as well as transition frequencies of the ν1 fundamental band, with the present molecular constants.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
J Chem Phys
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Japão