Selective Homonuclear Decoupling in 1H NMR: Application to Visualization of Enantiomers in Chiral Aligning Medium and Simplified Analyses of Spectra in Isotropic Solutions

被引:12
|
作者
Prabhu, Uday Ramesh [1 ,2 ]
Suryaprakash, N. [1 ]
机构
[1] Indian Inst Sci, NMR Res Ctr, Bangalore 560012, Karnataka, India
[2] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India
来源
JOURNAL OF PHYSICAL CHEMISTRY A | 2010年 / 114卷 / 17期
关键词
NMR-SPECTROSCOPY;
D O I
10.1021/jp1013994
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 proton NMR spectral complexity arising due to severe overlap of peaks hampers their analyses in diverse situations, even by the application of two-dimensional experiments. The selective or complete removal of the couplings and retention of only the chemical shift interactions in indirect dimension aids in the simplification of the spectrum to a large extent with little investment of the instrument time. The present study provides precise enantiodiscrimination employing more anisotropic NMR parameters in the chiral liquid crystalline medium and differentiates the overlapped peaks of many organic molecules and peptides dissolved in isotropic solvents.
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页码:5551 / 5557
页数:7
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