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Research Article
Direct estimation of an element of order matrix from 1H NMR spectra of strongly dipolar coupled spins
Article first published online: 6 APR 2009
DOI: 10.1002/mrc.2428
Copyright © 2009 John Wiley & Sons, Ltd.
1097-458Xa/asset/cover.gif?v=1&s=d5f2b3f6d127fcc37c26f1dbdb0c8887da653c0f "Magnetic Resonance in Chemistry")
Additional Information
How to Cite
Manjunatha Reddy, G. N. and Suryaprakash, N. (2009), Direct estimation of an element of order matrix from 1H NMR spectra of strongly dipolar coupled spins. Magn. Reson. Chem., 47: 562–567. doi: 10.1002/mrc.2428
Publication History
- Issue published online: 3 JUN 2009
- Article first published online: 6 APR 2009
- Manuscript Accepted: 18 FEB 2009
- Manuscript Revised: 11 FEB 2009
- Manuscript Received: 31 DEC 2008
- Abstract
- References
- Cited By
Keywords:
- NMR;
- liquid crystal;
- multiple quantum;
- order parameter;
- spectral complexity;
- dipolar couplings
Abstract
NMR spectra of molecules oriented in thermotropic liquid crystalline media provide information on the molecular structure and order. The spins are generally strongly dipolar coupled and the spectral analyses require the tedious and time consuming numerical iterative calculations. The present study demonstrates the application of multiple quantum spin state selective detection of single quantum transitions for mimicking the homonuclear decoupling and the direct estimation of an element of ordering matrix. This information is utilized to estimate the nearly accurate starting dipolar couplings for iterative calculations. The studies on the spectra of strongly dipolar coupled five and six interacting spin systems are reported. Copyright © 2009 John Wiley & Sons, Ltd.