Issue 24, 2015
From the journal:

Physical Chemistry Chemical Physics

Structure determination of trans-cinnamaldehyde by broadband microwave spectroscopy†

Sabrina Zinn,abc   Thomas Betz,abc   Chris Medcraftac  and  Melanie Schnell*abc  

* Corresponding authors

a Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, D-22761 Hamburg, Germany
E-mail: melanie.schnell@mpsd.mpg.de

b The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, D-22761 Hamburg, Germany

c Center for Free-Electron Laser Science, Notkestrasse 85, D-22607 Hamburg, Germany

Abstract

The rotational spectrum of trans-cinnamaldehyde ((E)-3-phenyl-2-propenal, C9H8O) was recorded by chirped-pulse Fourier transform microwave spectroscopy in the frequency range of 2–8.5 GHz. The odourant molecule is the essential component of cinnamon oil and causes the characteristic smell. The rotational signatures of two conformers were observed: s-trans–trans- and s-cis–trans-cinnamaldehyde. The rotational spectra of s-trans–trans-cinnamaldehyde and all of its 13C-monosubstituted species in natural abundance were assigned and the corresponding carbon backbone structure was determined. The second conformer s-cis–trans-cinnamaldehyde is about 9 kJ mol−1 higher in energy and could also be identified in the spectrum.

Graphical abstract: Structure determination of trans-cinnamaldehyde by broadband microwave spectroscopy

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Article information

DOI
https://doi.org/10.1039/C5CP02582F
Article type
Paper
Submitted
04 May 2015
Accepted
14 May 2015
First published
15 May 2015
This article is Open Access
Creative Commons BY-NC license

Phys. Chem. Chem. Phys., 2015,17, 16080-16085

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Structure determination of trans-cinnamaldehyde by broadband microwave spectroscopy

S. Zinn, T. Betz, C. Medcraft and M. Schnell, Phys. Chem. Chem. Phys., 2015, 17, 16080 DOI: 10.1039/C5CP02582F

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