The ultraviolet spectrum of the CoCl2 radical, studied at vibrational and rotational resolution
The laser excitation spectrum of the 327 nm band system of CoCl2, formed in a free-jet expansion, has been recorded at a rotational temperature of approximately 10 K. The spectrum is congested and suffers extensive perturbations. A progression in the excited state symmetric stretching vibration has...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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American Institute of Physics
2006
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| _version_ | 1826295610465058816 |
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| author | Hodges, P Brown, J Varberg, T |
| author_facet | Hodges, P Brown, J Varberg, T |
| author_sort | Hodges, P |
| collection | OXFORD |
| description | The laser excitation spectrum of the 327 nm band system of CoCl2, formed in a free-jet expansion, has been recorded at a rotational temperature of approximately 10 K. The spectrum is congested and suffers extensive perturbations. A progression in the excited state symmetric stretching vibration has been identified. The decrease in the symmetric stretching vibrational wave number on excitation is considerable [v'1=195.7(12), v''1=358.1(17) cmˉ¹]. Despite widespread perturbations in the rotational structure of these vibronic bands, they can be confidently assigned to a parallel Ω=7/2-7/2 transition, consistent with an inverted 4Δg ground electronic state. The rotational constant for Co35Cl2 in the ground state is determined to be 0.056 65(11) cmˉ¹, which corresponds to a value for the zero-point averaged Co-Cl bond length ro of 2.062 8(40)Å. The perturbations are found to be strongly isotopomer dependent. |
| first_indexed | 2024-03-07T04:03:41Z |
| format | Journal article |
| id | oxford-uuid:c5706092-0327-4362-ab0a-9814aeac0ebc |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:03:41Z |
| publishDate | 2006 |
| publisher | American Institute of Physics |
| record_format | dspace |
| spelling | oxford-uuid:c5706092-0327-4362-ab0a-9814aeac0ebc2022-03-27T06:30:55ZThe ultraviolet spectrum of the CoCl2 radical, studied at vibrational and rotational resolutionJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c5706092-0327-4362-ab0a-9814aeac0ebcPhysical & theoretical chemistryChemistry & allied sciencesEnglishOxford University Research Archive - ValetAmerican Institute of Physics2006Hodges, PBrown, JVarberg, TThe laser excitation spectrum of the 327 nm band system of CoCl2, formed in a free-jet expansion, has been recorded at a rotational temperature of approximately 10 K. The spectrum is congested and suffers extensive perturbations. A progression in the excited state symmetric stretching vibration has been identified. The decrease in the symmetric stretching vibrational wave number on excitation is considerable [v'1=195.7(12), v''1=358.1(17) cmˉ¹]. Despite widespread perturbations in the rotational structure of these vibronic bands, they can be confidently assigned to a parallel Ω=7/2-7/2 transition, consistent with an inverted 4Δg ground electronic state. The rotational constant for Co35Cl2 in the ground state is determined to be 0.056 65(11) cmˉ¹, which corresponds to a value for the zero-point averaged Co-Cl bond length ro of 2.062 8(40)Å. The perturbations are found to be strongly isotopomer dependent. |
| spellingShingle | Physical & theoretical chemistry Chemistry & allied sciences Hodges, P Brown, J Varberg, T The ultraviolet spectrum of the CoCl2 radical, studied at vibrational and rotational resolution |
| title | The ultraviolet spectrum of the CoCl2 radical, studied at vibrational and rotational resolution |
| title_full | The ultraviolet spectrum of the CoCl2 radical, studied at vibrational and rotational resolution |
| title_fullStr | The ultraviolet spectrum of the CoCl2 radical, studied at vibrational and rotational resolution |
| title_full_unstemmed | The ultraviolet spectrum of the CoCl2 radical, studied at vibrational and rotational resolution |
| title_short | The ultraviolet spectrum of the CoCl2 radical, studied at vibrational and rotational resolution |
| title_sort | ultraviolet spectrum of the cocl2 radical studied at vibrational and rotational resolution |
| topic | Physical & theoretical chemistry Chemistry & allied sciences |
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