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The weakly bound complex CH4-H2: Observation and analysis of infrared spectra in the 350 and 1311 cm−1 regions
| Content Provider | Semantic Scholar |
|---|---|
| Author | McKellar, A. R. W. Roth, Daniel Pak, Igor Winnewisser, Gisbert |
| Copyright Year | 1999 |
| Abstract | Infrared spectra of the weakly bound van der Waals complex CH4-paraH2 have been observed and analyzed for the first time. Measurements were made using a long-path (160–180 m) low-temperature (61–92 K) absorption cell which was probed with a Fourier transform spectrometer and a tunable diode laser. The partly resolved spectrum accompanying the S0(0) pure rotational transition of H2 around 350 cm−1 was analyzed in terms of an approximate model to obtain the rotational and centrifugal distortion constants of the complex in its ground state. The high resolution spectrum accompanying the R(0) transition of the ν4 fundamental band of CH4 near 1311 cm−1 was assigned in detail and analyzed using the Coriolis model used previously for analogous spectra of methane–rare gas complexes. The effective intermolecular separation and dissociation energy of the complex in its ground state were determined to be about 4.12 A and 28 cm−1, respectively. |
| Starting Page | 9989 |
| Ending Page | 9996 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1063/1.478872 |
| Volume Number | 110 |
| Alternate Webpage(s) | https://molspect.chemistry.ohio-state.edu/symposium_54/symposium/Abstracts/p086.pdf |
| Alternate Webpage(s) | https://doi.org/10.1063/1.478872 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
