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Quantitative assessment of intramolecular hydrogen bonds in neutral histidine
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Quantitative assessment of intramolecular hydrogen bonds in neutral histidine
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Journal Article
Quantitative assessment of intramolecular hydrogen bonds in neutral histidine
2020
Overview
Experimentalists recently characterized the difficulty in isolating gaseous histidine in its neutral form. To understand the factors which stabilize neutral histidine, the intrinsic nature of the intramolecular hydrogen bonding networks in the four most stable histidine conformers was investigated via density functional theory combined with the local vibrational mode analysis originally introduced by Konkoli and Cremer, quantum theory of atoms in molecules, non-covalent interaction analysis, and natural bond orbital population analysis. Our results show a positive correlation between intramolecular hydrogen bond strength and structural stability, where the presence of the O-H⋯Nα bond type is a major factor.
Publisher
Springer Nature B.V
