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Implementing homo- and heterodecoupling in region-selective HSQMBC experiments

Authors
Journal
Journal of Magnetic Resonance
1090-7807
Publisher
Elsevier
Volume
238
Identifiers
DOI: 10.1016/j.jmr.2013.10.022
Keywords
  • Pure-Shift
  • Band-Selective Hsqmbc
  • Proton–Carbon Coupling Constants
  • Homonuclear Decoupling
  • Sensitivity Improvement
  • Resolution Enhancement

Abstract

Abstract An NMR method to enhance the sensitivity and resolution in band-selective long-range heteronuclear correlation spectra is proposed. The excellent in-phase nature of the selHSQMBC experiment allows that homonuclear and/or heteronuclear decoupling can be achieved in the detected dimension of a 2D multiple-bond correlation map, obtaining simplified cross-peaks without their characteristic fine J multiplet structure. The experimental result is a resolution improvement while the highest sensitivity is also achieved. Specifically, it is shown that the 1H-homodecoupled band-selective (HOBS) HSQMBC experiment represents a new way to measure heteronuclear coupling constants from the simplified in-phase doublets generated along the detected dimension.

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