Wiley, Angewandte Chemie International Edition, 24(41), p. 4673-4676, 2002
Wiley, Angewandte Chemie, 24(114), p. 4867-4870, 2002
Full text: Download
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.