Sensitivity- and Gradient-Enhanced Heteronuclear Coupled/Decoupled HSQC–TOCSY Experiments for Measuring Long-Range Heteronuclear Coupling Constants |
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Authors: | Katalin E Kvr Victor J Hruby Du
an Uhrín |
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Institution: | Katalin E. Kövér, Victor J. Hruby,Du
an Uhrín |
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Abstract: | A pulsed field gradient version of the sensitivity-enhanced 2D HSQC–TOCSY experiment is proposed for measurement of long-range heteronuclear coupling constants. The coupling constants are obtained by computer-aided analysis of mixed-phase multiplets with and without the heteronuclear splitting. Generation of pure phase data is not required. Since large1JXHandJHHcouplings are used for coherence transfer, smallnJXHcan be measured accurately, which could be difficult to obtain from purely heteronuclear polarization transfer experiments. |
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