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Direct estimation of an element of order matrix from H-1 NMR spectra of strongly dipolar coupled spins

Reddy, GN Manjunatha and Suryaprakash, N (2009) Direct estimation of an element of order matrix from H-1 NMR spectra of strongly dipolar coupled spins. In: Magnetic Resonance in Chemistry, 47 (7). pp. 562-567.

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Official URL: http://www3.interscience.wiley.com/journal/1223048...

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 analyse 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.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to John Wiley and Sons.
Keywords: NMR;liquid crystal;multiple quantum order parameter; spectral complexity;dipolar couplings.
Department/Centre: Division of Chemical Sciences > NMR Research Centre (Formerly SIF)
Date Deposited: 22 Jul 2009 06:56
Last Modified: 19 Sep 2010 05:38
URI: http://eprints.iisc.ernet.in/id/eprint/21643

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