A General Scheme for Suppression of ABX Strong Coupling Signals in Heteronuclear Scalar and Dipolar Correlation Experiments

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Abstract

Enhanced versions of heteronuclear chemical shift correlation experiments which yield high-quality spectra with efficient suppression of extra peaks arising from strong coupling effects are proposed. The enhanced pulse sequences feature properly designed filtering schemes inserted during preparation, or prior to acquisition, or at both places depending on the particular experiment. These modifications extend the applicability of existing methods, since they exclude misinterpretation of spurious peaks and allow unambiguous assignment of the desired correlations. The general applicability of the filtering method is noteworthy; both scalar- and dipolar-correlated experiments with both X and 1H detection using phase cycling or gradient pulses for coherence selection can be freed of strong coupling artifacts.

Original languageEnglish
Pages (from-to)89-97
Number of pages9
JournalJournal of Magnetic Resonance
Volume138
Issue number1
Publication statusPublished - May 1999

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retarding
scalars
pulses
Artifacts
chemical equilibrium
artifacts
acquisition
Experiments
Chemical shift
gradients
preparation
cycles
Laser pulses

Keywords

  • Heteronuclear correlations
  • Strong coupling
  • Suppression of artifacts
  • X/H filtering

ASJC Scopus subject areas

  • Molecular Biology
  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Radiology Nuclear Medicine and imaging
  • Condensed Matter Physics

Cite this

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abstract = "Enhanced versions of heteronuclear chemical shift correlation experiments which yield high-quality spectra with efficient suppression of extra peaks arising from strong coupling effects are proposed. The enhanced pulse sequences feature properly designed filtering schemes inserted during preparation, or prior to acquisition, or at both places depending on the particular experiment. These modifications extend the applicability of existing methods, since they exclude misinterpretation of spurious peaks and allow unambiguous assignment of the desired correlations. The general applicability of the filtering method is noteworthy; both scalar- and dipolar-correlated experiments with both X and 1H detection using phase cycling or gradient pulses for coherence selection can be freed of strong coupling artifacts.",
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AU - Kövér, K.

AU - Batta, G.

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N2 - Enhanced versions of heteronuclear chemical shift correlation experiments which yield high-quality spectra with efficient suppression of extra peaks arising from strong coupling effects are proposed. The enhanced pulse sequences feature properly designed filtering schemes inserted during preparation, or prior to acquisition, or at both places depending on the particular experiment. These modifications extend the applicability of existing methods, since they exclude misinterpretation of spurious peaks and allow unambiguous assignment of the desired correlations. The general applicability of the filtering method is noteworthy; both scalar- and dipolar-correlated experiments with both X and 1H detection using phase cycling or gradient pulses for coherence selection can be freed of strong coupling artifacts.

AB - Enhanced versions of heteronuclear chemical shift correlation experiments which yield high-quality spectra with efficient suppression of extra peaks arising from strong coupling effects are proposed. The enhanced pulse sequences feature properly designed filtering schemes inserted during preparation, or prior to acquisition, or at both places depending on the particular experiment. These modifications extend the applicability of existing methods, since they exclude misinterpretation of spurious peaks and allow unambiguous assignment of the desired correlations. The general applicability of the filtering method is noteworthy; both scalar- and dipolar-correlated experiments with both X and 1H detection using phase cycling or gradient pulses for coherence selection can be freed of strong coupling artifacts.

KW - Heteronuclear correlations

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KW - Suppression of artifacts

KW - X/H filtering

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