Spectra of the D2O dimer in the O-D fundamental stretch region: the acceptor symmetric stretch fundamental and new combination bands
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866916135369179136 |
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| author | Barclay, A. J. McKellar, A. R. W. Moazzen-Ahmadi, N. |
| author_facet | Barclay, A. J. McKellar, A. R. W. Moazzen-Ahmadi, N. |
| contents | The O-D stretch fundamental region of the deuterated water dimer, (D2O)2, is further studied using a pulsed supersonic slit jet and a tunable optical parametric oscillator infrared source. The previously unobserved acceptor symmetric O-D stretch fundamental vibration is detected, with Ka = 0 <-- 0 and 1 <-- 0 sub-bands at about 2669 and 2674 cm-1, respectively. Analysis indicates that the various water dimer tunneling splittings generally decrease in the excited vibrational state, similar to the three other previously observed O-D stretch fundamentals. Two new (D2O)2 combination bands are observed, giving information on intermolecular vibrations in the excited O-D stretch states. The likely vibrational assignments for these and a previously observed combination band are discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_14923 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Spectra of the D2O dimer in the O-D fundamental stretch region: the acceptor symmetric stretch fundamental and new combination bands Barclay, A. J. McKellar, A. R. W. Moazzen-Ahmadi, N. Atomic and Molecular Clusters The O-D stretch fundamental region of the deuterated water dimer, (D2O)2, is further studied using a pulsed supersonic slit jet and a tunable optical parametric oscillator infrared source. The previously unobserved acceptor symmetric O-D stretch fundamental vibration is detected, with Ka = 0 <-- 0 and 1 <-- 0 sub-bands at about 2669 and 2674 cm-1, respectively. Analysis indicates that the various water dimer tunneling splittings generally decrease in the excited vibrational state, similar to the three other previously observed O-D stretch fundamentals. Two new (D2O)2 combination bands are observed, giving information on intermolecular vibrations in the excited O-D stretch states. The likely vibrational assignments for these and a previously observed combination band are discussed. |
| title | Spectra of the D2O dimer in the O-D fundamental stretch region: the acceptor symmetric stretch fundamental and new combination bands |
| topic | Atomic and Molecular Clusters |
| url | https://arxiv.org/abs/2402.14923 |