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Updated: Jun 17, 2026

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
Published on: July 27, 2022
Are there single-well hydrogen bonds in pyridine-dichloroacetic acid complexes?
Charles L Perrin1, Phaneendrasai Karri
1Department of Chemistry & Biochemistry, University of California, San Diego, CA 92093-0358, USA. cperrin@ucsd.edu
Abstract:
The (18)O-induced isotope shifts in (13)C NMR spectra of 1:1 complexes of Cl(2)CHC(18)O(2)H with a series of substituted pyridines in CD(2)Cl(2) at low temperature reach a maximum when the acidities of the hydrogen-bond donors are matched, consistent with a mixture of tautomers, and with no drop that would indicate a single-well H-bond.
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