Internal dynamics and chiral analysis of pulegone, using microwave broadband spectroscopy

Krin, Anna

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https://hdl.handle.net/2142/97046 Copy

Description

Title

Internal dynamics and chiral analysis of pulegone, using microwave broadband spectroscopy

Author(s)

Krin, Anna

Contributor(s)

• Lopez, Juan Carlos
• Blanco, Susana
• Pinacho, Pablo
• Avilés-Moreno, Juan Ramón
• López-González, Juan Jesús
• Quesada-Moreno, María del Mar
• Schnell, Melanie
• Perez, Cristobal

Issue Date

2017-06-22

Keyword(s)

Chirality-sensitive spectroscopy

Abstract

Essential oils, such as peppermint or pennyroyal oil, are widely used in medicine, pharmacology and cosmetics. Their major constituents, terpenes, are mostly chiral molecules and thus may exhibit different biological functionality with respect to their enantiomers. Here, we present recent results on the enantiomers of pulegone, one of the components of the peppermint (textit{Mentha piperita L.}) and pennyroyal (textit{Mentha pulegium}) essential oils, using the microwave three-wave mixing (M3WM) technique.\_x000d_ M3WM relies on the fact that the scalar triple product of the dipole moment components $mu_{a}$, $mu_{b}$ and $mu_{c}$ differs in sign between the enantiomers. A loop of three dipole-allowed rotational transitions is required for the analysis of a chiral molecule. Since the recorded signal will be exactly out of phase for the two enantiomers, an unambiguous differentiation between them is possible, even in complex mixtures.\_x000d_ In addition to the chiral analysis of pulegone, its internal dynamics, resulting from the independent rotation of two of its three methyl groups, will be discussed. Moreover, a cluster of pulegone with one water molecule will be presented. _x000d_

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/97046

DOI

https://doi.org/10.15278/isms.2017.RG02

Copyright and License Information

Copyright 2017 Anna Krin

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