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Raman spectroscopic evidence for cooperative C-H...O interactions in the acetaldehyde-CO2 complex

Marc A Blatchford1, Poovathinthodiyil Raveendran, Scott L Wallen

  • 1Department of Chemistry, Kenan and Venable Laboratories, The University of North Carolina, Chapel Hill, NC 27599-3290, USA.

Journal of the American Chemical Society
|December 12, 2002
PubMed

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Infrared spectroscopy, also known as vibrational spectroscopy, is mainly used to determine the types of bonds and functional groups in molecules. In aldehydes and ketones, the carbonyl (C=O) bond shows an absorption around 1710 cm-1. The C=O bond vibration of an aldehyde occurs at lower frequencies than that of a ketone. In addition to the C=O absorption in an aldehyde, the aldehydic C–H bond also gives two peaks in the 2700–2800 cm-1 range. This absorption, coupled with the C=O stretching, is...
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