Observation of b[subscript 2] symmetry vibrational levels of the SO[subscript 2] [~ over C] [superscript 1]B[subscript 2] state: Vibrational level staggering, Coriolis interactions, and rotation-vibration constants
The [~ over C] [superscript 1]B[subscript 2] state of SO[subscript 2] has a double-minimum potential in the antisymmetric stretch coordinate, such that the minimum energy geometry has nonequivalent SO bond lengths. However, low-lying levels with odd quanta of antisymmetric stretch (b[subscript 2] vi...
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
American Institute of Physics (AIP)
2017
|
| Online Access: | http://hdl.handle.net/1721.1/109580 https://orcid.org/0000-0002-3526-3797 https://orcid.org/0000-0002-7609-4205 |
| _version_ | 1811097810663112704 |
|---|---|
| author | Park III, George Barratt Jiang, Jun Saladrigas, Catherine A. Field, Robert W |
| author2 | Massachusetts Institute of Technology. Department of Chemistry |
| author_facet | Massachusetts Institute of Technology. Department of Chemistry Park III, George Barratt Jiang, Jun Saladrigas, Catherine A. Field, Robert W |
| author_sort | Park III, George Barratt |
| collection | MIT |
| description | The [~ over C] [superscript 1]B[subscript 2] state of SO[subscript 2] has a double-minimum potential in the antisymmetric stretch coordinate, such that the minimum energy geometry has nonequivalent SO bond lengths. However, low-lying levels with odd quanta of antisymmetric stretch (b[subscript 2] vibrational symmetry) have not previously been observed because transitions into these levels from the zero-point level of the [~ over X] state are vibronically forbidden. We use IR-UV double resonance to observe the b[subscript 2] vibrational levels of the [~ over C] state below 1600 cm[superscript −1] of vibrational excitation. This enables a direct characterization of the vibrational level staggering that results from the double-minimum potential. In addition, it allows us to deperturb the strong c-axis Coriolis interactions between levels of a[subscript 1] and b[subscript 2] vibrational symmetry, and to determine accurately the vibrational dependence of the rotational constants in the distorted [~ over C] electronic state. |
| first_indexed | 2024-09-23T17:04:59Z |
| format | Article |
| id | mit-1721.1/109580 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T17:04:59Z |
| publishDate | 2017 |
| publisher | American Institute of Physics (AIP) |
| record_format | dspace |
| spelling | mit-1721.1/1095802022-10-03T10:18:30Z Observation of b[subscript 2] symmetry vibrational levels of the SO[subscript 2] [~ over C] [superscript 1]B[subscript 2] state: Vibrational level staggering, Coriolis interactions, and rotation-vibration constants Observation of b2 symmetry vibrational levels of the SO2 C̃ 1B2 state: Vibrational level staggering, Coriolis interactions, and rotation-vibration constants Park III, George Barratt Jiang, Jun Saladrigas, Catherine A. Field, Robert W Massachusetts Institute of Technology. Department of Chemistry Park III, George Barratt Jiang, Jun Saladrigas, Catherine A. Field, Robert W The [~ over C] [superscript 1]B[subscript 2] state of SO[subscript 2] has a double-minimum potential in the antisymmetric stretch coordinate, such that the minimum energy geometry has nonequivalent SO bond lengths. However, low-lying levels with odd quanta of antisymmetric stretch (b[subscript 2] vibrational symmetry) have not previously been observed because transitions into these levels from the zero-point level of the [~ over X] state are vibronically forbidden. We use IR-UV double resonance to observe the b[subscript 2] vibrational levels of the [~ over C] state below 1600 cm[superscript −1] of vibrational excitation. This enables a direct characterization of the vibrational level staggering that results from the double-minimum potential. In addition, it allows us to deperturb the strong c-axis Coriolis interactions between levels of a[subscript 1] and b[subscript 2] vibrational symmetry, and to determine accurately the vibrational dependence of the rotational constants in the distorted [~ over C] electronic state. 2017-06-05T13:57:21Z 2017-06-05T13:57:21Z 2016-04 2016-03 Article http://purl.org/eprint/type/JournalArticle 0021-9606 1089-7690 http://hdl.handle.net/1721.1/109580 Park, G. Barratt et al. “Observation of B 2 Symmetry Vibrational Levels of the SO 2 [~ over C] 1 B 2 State: Vibrational Level Staggering, Coriolis Interactions, and Rotation-Vibration Constants.” The Journal of Chemical Physics 144.14 (2016): 144311. https://orcid.org/0000-0002-3526-3797 https://orcid.org/0000-0002-7609-4205 en_US http://dx.doi.org/10.1063/1.4944924 The Journal of Chemical Physics Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf American Institute of Physics (AIP) arXiv |
| spellingShingle | Park III, George Barratt Jiang, Jun Saladrigas, Catherine A. Field, Robert W Observation of b[subscript 2] symmetry vibrational levels of the SO[subscript 2] [~ over C] [superscript 1]B[subscript 2] state: Vibrational level staggering, Coriolis interactions, and rotation-vibration constants |
| title | Observation of b[subscript 2] symmetry vibrational levels of the SO[subscript 2] [~ over C] [superscript 1]B[subscript 2] state: Vibrational level staggering, Coriolis interactions, and rotation-vibration constants |
| title_full | Observation of b[subscript 2] symmetry vibrational levels of the SO[subscript 2] [~ over C] [superscript 1]B[subscript 2] state: Vibrational level staggering, Coriolis interactions, and rotation-vibration constants |
| title_fullStr | Observation of b[subscript 2] symmetry vibrational levels of the SO[subscript 2] [~ over C] [superscript 1]B[subscript 2] state: Vibrational level staggering, Coriolis interactions, and rotation-vibration constants |
| title_full_unstemmed | Observation of b[subscript 2] symmetry vibrational levels of the SO[subscript 2] [~ over C] [superscript 1]B[subscript 2] state: Vibrational level staggering, Coriolis interactions, and rotation-vibration constants |
| title_short | Observation of b[subscript 2] symmetry vibrational levels of the SO[subscript 2] [~ over C] [superscript 1]B[subscript 2] state: Vibrational level staggering, Coriolis interactions, and rotation-vibration constants |
| title_sort | observation of b subscript 2 symmetry vibrational levels of the so subscript 2 over c superscript 1 b subscript 2 state vibrational level staggering coriolis interactions and rotation vibration constants |
| url | http://hdl.handle.net/1721.1/109580 https://orcid.org/0000-0002-3526-3797 https://orcid.org/0000-0002-7609-4205 |
| work_keys_str_mv | AT parkiiigeorgebarratt observationofbsubscript2symmetryvibrationallevelsofthesosubscript2overcsuperscript1bsubscript2statevibrationallevelstaggeringcoriolisinteractionsandrotationvibrationconstants AT jiangjun observationofbsubscript2symmetryvibrationallevelsofthesosubscript2overcsuperscript1bsubscript2statevibrationallevelstaggeringcoriolisinteractionsandrotationvibrationconstants AT saladrigascatherinea observationofbsubscript2symmetryvibrationallevelsofthesosubscript2overcsuperscript1bsubscript2statevibrationallevelstaggeringcoriolisinteractionsandrotationvibrationconstants AT fieldrobertw observationofbsubscript2symmetryvibrationallevelsofthesosubscript2overcsuperscript1bsubscript2statevibrationallevelstaggeringcoriolisinteractionsandrotationvibrationconstants AT parkiiigeorgebarratt observationofb2symmetryvibrationallevelsoftheso2c1b2statevibrationallevelstaggeringcoriolisinteractionsandrotationvibrationconstants AT jiangjun observationofb2symmetryvibrationallevelsoftheso2c1b2statevibrationallevelstaggeringcoriolisinteractionsandrotationvibrationconstants AT saladrigascatherinea observationofb2symmetryvibrationallevelsoftheso2c1b2statevibrationallevelstaggeringcoriolisinteractionsandrotationvibrationconstants AT fieldrobertw observationofb2symmetryvibrationallevelsoftheso2c1b2statevibrationallevelstaggeringcoriolisinteractionsandrotationvibrationconstants |