Homonuclear J-couplings and rotationally induced sideband enhancements in NMR spectra of rotating solids

D. P. Raleigh, G. S. Harbison, T. G. Neiss, J. E. Roberts, R. G. Griffin

Research output: Contribution to journalArticle

78 Scopus citations

Abstract

We demonstrate direct detection of 13C-13C J-couplings in magic angle sample spinning NMR spectra despite the presence of the much larger homogeneous broadening caused by the homonuclear dipolar couplings. Carbon-carbon J-couplings were observed in doubly 13C-enriched samples of sodium acetate, glycine and glucose. The resolved J-coupling permits carbon-carbon connectivities to be established with standard two-dimensional techniques. Interesting spectral features are observed when the rotational sidebands of the coupled spins overlap: when a sideband from a dipolar-coupled pair approaches the centerband of its partner, a significant enhancement in sideband intensity is observed as well as small shifts in the resonance frequency.

Original languageEnglish (US)
Pages (from-to)285-290
Number of pages6
JournalChemical Physics Letters
Volume138
Issue number4
DOIs
StatePublished - Jul 24 1987

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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