| Author(s): |
Walter J. Lafferty; Jean-Marie Flaud; |
| Title: |
34S16O2: High Resolution analysis of the (030), (101), (111), (002) and (201) vibrational states; Determination of equilibrium rotational constants for sulfur dioxide. |
| Published: |
October 12, 2009 |
| Abstract: |
High resolution Fourier transform spectra of a sample of sulfur dioxide enriched in 34S (95.3%). have been completely analyzed leading to a large set of assigned lines. The experimental levels derived from this set of transitions have been fit to within their experimental uncertainties using Watson-type Hamiltonians. Precise band centers, rotational and centrifugal distortion constants have been determined. The following band centers in cm-1 have been obtained: 0(3 2)=1538.720198(11), 0( 1+ 3)=2475.828003(33), 0( 1+ 2+ 3)=2982.118596(19), 0 (2 3)=2679.80221(34), and 0(2 1+ 3)=3598.3598.773915(38). The rotational constants obtained in this work have been fit together with the rotational constants of lower lying vibrational states [ W.J. Lafferty, J.-M. Flaud, R.L. Sams and EL Hadjiabib, in press] to obtain equilibrium constants as well as vibration-rotation constants. Finally these equilibrium constants have been fit together with those of 32S16O2 [J.-M. Flaud and W.J. Lafferty, J. Mol. Spectrosc. 16 (1993) 396-402] leading to an improved equilibrium structure. |
| Citation: |
Journal of Molecular Spectroscopy |
| Volume: |
253 |
| Pages: |
pp. 51 - 54 |
| Keywords: |
Anharmonic vibrational constants; Equilibrium ro-vibrational constants; Equilibrium structure; High resolution infrared spectra |
| Research Areas: |
Chemical Physics |
