Coexistence of both histidine tautomers in the solid state and stabilisation of the unfavourable Nδ–H form by intramolecular hydrogen bonding: crystalline l-His-Gly hemihydrate
- 1 January 1997
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- No. 13,p. 1207-1208
- https://doi.org/10.1039/a701807j
Abstract
The crystal structure of L-His-Gly hemihydrate contains two independent peptide molecules which exhibit different histidine tautomers; the less favourable N(δ)–H form is stabilized by an intramolecular Nδ(n)–H···O(n + 1) hydrogen bond facilitated by a suitable molecular conformation.Keywords
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