Simultaneous acquisition of two 2D HSQC spectra with different 13 C spectral widths

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© 2019 Elsevier Inc. A time-efficient NMR strategy that involves the interleaved acquisition of two 2D HSQC spectra having different spectral widths in the indirect 13 C dimension is presented. We show how the two equivalent coherence transfer pathways involved in sensitivity-enhanced HSQC experiments are managed selectively and detected separately in different FID periods within the same scan. The feasibility of this new SADA-HSQC (Spectral Aliasing in Dually Acquired HSQC) technique is demonstrated by recording simultaneously two complementary datasets, conventional and highly-resolved spectral-aliased 2D HSQC spectra, in a single NMR experiment. Combining the information from both datasets, accurate chemical shift determination and excellent signal dispersion is achieved in a unique measurement using only few t 1 increments.
Original languageEnglish
Pages (from-to)1-7
JournalJournal of Magnetic Resonance
Publication statusPublished - 1 Mar 2019


  • HSQC
  • MFA
  • Multiple FID acquisition
  • NMR
  • PEP
  • Spectral aliasing


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