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The magnetic hyperfine structure in the rotational spectrum of H2CNH |
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| Authors: | Luca Dore Luca Bizzocchi |
| Institution: | a Dipartimento di Chimica “G. Ciamician”, Università di Bologna, 40126 Bologna, Italy b CAAUL, Observatório Astronómico de Lisboa, Tapada de Ajuda, 1349-018 Lisboa, Portugal c Institut für Physikalische Chemie, Universität Mainz, 55099 Mainz, Germany |
| Abstract: | The hyperfine structure in the ground-state rotational spectrum of methanimine was studied in the frequency range of 64-172 GHz by means of the Lamb-dip technique. This allowed to resolve, in some hyperfine components due to the 14N nucleus, doublets separated by only some tenth of kHz. We explain the splittings as due to magnetic interactions of the three protons with their molecular environment. The analysis of the experimental spectrum has been guided by quantum-chemical calculations of the hyperfine parameters. |
| Keywords: | Rotational spectroscopy Hyperfine structure Lamb-dip spectroscopy Quantum-chemical calculations |
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