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Presents a study which used low-barrier hydrogen bond (LBHB) complexes to investigate the relationship between calculated hydrogen bond strengths and calculated 1H nuclear magnetic resonance (NMR) chemical shifts. Characteristics of LBHB; Calculation of NMR chemical shifts; Results of the study.

Presents an experiment which was carried out in the gas phase on a series of enol--enolate complexes, focusing on short, strong hydrogen bonds. Location of the transition structure for proton transfer in the mesaconic system; Information on the emergency difference between short, strong and normal hydrogen bonds; Alternatives to short, strong hydrogen bonds in enzymatic catalysis.

Focuses on the use of various calculations to study the effect of microsolvation on the strength of the a representative low-barrier hydrogen bond. Description of the hydrogen bond in ther gas phase; Action of the hydrogen bond when enol and enolate anion are microsolvated; Suggestion that the presence of interstitial water may not preclude the importance of low barrier hydrogen bonds in biological catalysts.

Provides information on a study conducted on the characterization of low-barrier hydrogen bonds (LBHBs). Difference between short strong hydrogen bonds and LBHBs; Reference to previous studies of LBHBs; Methodology used to conduct study; Results of study.

Describes the characterization of low-barrier hydrogen bonds. Relationship between strength and geometry of short-strong hydrogen bonds; Formic acid-formate anion model system; Performance of ab initio and density functional theory investigation.

Characterizes the effects of microsolvation on the strength of low-barrier hydrogen bonds (LBHB). Interactions of formic acid molecules; Calculation of the interaction between water and formate; Geometries of LBHB; Relationship between the hydrogen bond distance and the calculated interaction energy.