Studies based on deuterium isotope effect on 13C chemical shifts

被引：60

作者：

Dziembowska, T

Hansen, PE

Rozwadowski, Z

机构：

[1] Tech Univ Szczecin, Inst Chem & Environm Protect, PL-70065 Szczecin, Poland

[2] Roskilde Univ, Dept Life Sci & Chem, DK-4000 Roskilde, Denmark

来源：

PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY | 2004年 / 45卷 / 1-2期

关键词：

C-13 NMR spectroscopy; deuterium isotope effect on the chemical shift; structure studies; conformational analysis; hydrogen bonding; carbocations; biomolecule studies;

D O I：

10.1016/j.pnmrs.2004.04.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The deuterium isotope effects on the 13C chemical shifts and the electronic structure of the molecules, were analyzed. It was observed that the nuclear magnetic shielding depends on the vibrationally and rotationally averaged bond lengths and bond angles. The prerequisite for observing separate signals for the H- and the D species was to have slow exchange on the NMR time scale. Results show that the largest effects occurred in the bond in which the subsituted atom was directly involved.

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页码：1 / 29

页数：29

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