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Infrared Spectra and Structures of the Valyl-Alanine and Alanyl-Valine Zwitterions Isolated in a KBr Matrix

Jacob, Rebecca; Fischer, Gad


The infrared absorption spectra of the dipeptide zwitterions L-valyl-L-alanine and L-alanyl-L-valine have been measured using a novel infrared sampling technique. The two dipeptides are isomers, and similar spectra are expected and were measured. With the better resolved spectra obtained with the dissolution, spray, and deposition technique, small but significant differences were identified, not evident in the normal KBr pellet spectra. Ab initio molecular orbital calculations of the...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Journal article
Source: Journal of Physical Chemistry A
DOI: 10.1021/jp0226275


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