Conditional rotations of heteronuclear coupled spins

Lauren F. O'Donnell, Clark D. Ridge, Jamie D. Walls

Research output: Contribution to journalArticlepeer-review


We present a new pulse sequence that conditionally excites I spin magnetization only in the presence of a nonzero heteronuclear coupling to an S spin. The pulse sequence, referred to as the reverse INEPT pathway selective pulse or RIPSP, generates a pure I spin rotation by an angle that depends upon the heteronuclear coupling constant in InS spin systems. Experimental demonstrations are shown in 13C labeled chloroform, dichloromethane, and toluene samples and in unlabeled 2,3-dibromopropionic acid and brucine samples.

Original languageEnglish (US)
Pages (from-to)63-70
Number of pages8
JournalJournal of Magnetic Resonance
StatePublished - Jan 2015


  • Average Hamiltonian theory
  • Reverse INEPT
  • Selective excitation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Biochemistry
  • Biophysics
  • Condensed Matter Physics


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