Decoupling in the presence of scalar interactions

{
  "id": "MLC-T-CHM-013020",
  "term": "Decoupling in the presence of scalar interactions",
  "field": "Chemistry",
  "definition": "A family of composite-pulse sequences, abbreviated DIPSI, used in NMR to create isotropic mixing in TOCSY experiments, so that magnetization spreads among all mutually coupled spins of a spin system regardless of their offsets. The sequences work efficiently over large spectral bandwidths, and DIPSI-2 is a widely used variant for homonuclear mixing. They differ from continuous-wave irradiation, which is the older way of decoupling a single coupled nucleus.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "pulse sequence",
    "nuclear magnetic resonance spectroscopy",
    "spectral bandwidth",
    "total correlation spectroscopy"
  ],
  "references": [
    "PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 685 (https://doi.org/10.1515/pac-2019-0203)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/decoupling-in-the-presence-of-scalar-interactions/"
}