The Structure of Neutral Proline

Abstract

An intramolecular hydrogen bond of the type OH⋅⋅⋅N is present in both conformers of proline (see picture) that were observed in the gas phase using laser-ablation molecular-beam Fourier-transform microwave spectroscopy. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2002/z19866_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.