Determination of rotational and centrifugal distortion constants using quadrupole hyperfine structure: The microwave spectrum of lodine isocyanate, INCO
| Autor: | H.M. Jemson, W. Lewis-Bevan, N.P.C. Westwood, M. C. L. Gerry |
|---|---|
| Rok vydání: | 1986 |
| Předmět: |
chemistry.chemical_classification
Materials science Rotational transition Isocyanate Molecular physics Atomic and Molecular Physics and Optics chemistry.chemical_compound Nuclear magnetic resonance chemistry Distortion Quadrupole Rotational spectroscopy Physical and Theoretical Chemistry Inorganic compound Hyperfine structure Spectroscopy Microwave |
| Zdroj: | Journal of Molecular Spectroscopy. 119:22-37 |
| ISSN: | 0022-2852 |
| DOI: | 10.1016/0022-2852(86)90198-0 |
| Popis: | The microwave spectrum of the unstable molecule iodine isocyanate, INCO, has been observed from the flow reaction of I 2 vapor with silver cyanate. The spectrum, which was measured in the frequency range 18–54 GHz, contains strong a -type and very weak b -type transitions. The transitions show I and N quadrupole hyperfine structure; many perturbations in the I structure have been observed. Our novel method for using such perturbations to evaluate otherwise unobtainable rotational constants has been extended to include centrifugal distortion constants. This has been done using a global least-squares fitting program developed especially for the purpose. The molecule has been shown to be planar, and a partial r 0 structure has been determined. The principal values of the I quadrupole tensor have been evaluated, and are consistent with a straight IN bond. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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