Are there single-well hydrogen bonds in pyridine-dichloroacetic acid complexes?

被引：17

作者：

Perrin, Charles L. ^{[1
]}

Karri, Phaneendrasai ^{[1
]}

机构：

[1] Univ Calif San Diego, Dept Chem & Biochem, San Diego, CA 92093 USA

来源：

CHEMICAL COMMUNICATIONS | 2010年 / 46卷 / 03期

关键词：

NMR CHEMICAL-SHIFTS; PROTON-TRANSFER; GEOMETRIES; SYMMETRY; SOLVENT; BASE;

D O I：

10.1039/b917765e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：481 / 483

页数：3

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