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A Comparative Study of Two Bicyclic Ethers, Eucalyptol and 1,4-Cineole, by Broadband Rotational Spectroscopy

MPG-Autoren
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Medcraft,  Chris
Structure and Dynamics of Cold and Controlled Molecules, Independent Research Groups, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science, Luruper Chaussee 149, D-22761 Hamburg, Germany;

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Schnell,  Melanie
Structure and Dynamics of Cold and Controlled Molecules, Independent Research Groups, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
Center for Free-Electron Laser Science, Luruper Chaussee 149, D-22761 Hamburg, Germany;

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zpch-2015-0643.pdf
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zpch-2015-0643_suppl1.pdf
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Zitation

Medcraft, C., & Schnell, M. (2016). A Comparative Study of Two Bicyclic Ethers, Eucalyptol and 1,4-Cineole, by Broadband Rotational Spectroscopy. Zeitschrift für Physikalische Chemie: International journal of research in physical chemistry and chemical physics, 230(1), 1-14. doi:10.1515/zpch-2015-0643.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0029-AA8C-B
Zusammenfassung
The rotational spectra of the two structurally related molecules, 1,4-cineole and 1,8-cineole (eucalyptol), were measured between 2–8.5 GHz with chirped pulse Fourier transform microwave spectroscopy. The structures of these two molecules only differ in the connectivity of an ether functional group. This results in a significant change in the three dimensional structure of the molecule and consequently large differences in the rotational spectra. Only one conformer of each molecule was detected in the molecular jet and no line splittings due to internal rotations were detected. A substitution structure (rs) was determined for eucalyptol and benchmarked to quantum chemical structures allowing for a comparison of eucalyptol and 1,4-cineole.