Abstract
The application of INEPT and DEPT pulse sequences to weakly coupled spin- 1 2 systems with different hetero- and homonuclear coupling constants has been investigated. For the simulation of the spectra arising from these multiple-pulse experiments, general computer programs have been written based on the density matrix approach. Numerical results calculated in this way allow the investigation of the polarization transfer in detail. Analytical expressions which describe the attainable sensitivity enhancement are presented. Their use in the experimental optimization of these pulse sequences is demonstrated for 13C and 15N NMR spectra.
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