Coupling constant

{
  "id": "MLC-T-CHM-002649",
  "term": "Coupling constant",
  "field": "Chemistry",
  "definition": "A parameter in nuclear magnetic resonance (NMR) spectroscopy that quantifies the interaction between two nuclear spins. It is a measure of the splitting of NMR signals due to spin-spin coupling through chemical bonds. The coupling constant, denoted as J, is typically measured in Hertz (Hz).",
  "synonyms": [
    "spin-spin coupling constant"
  ],
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "chemical induction",
    "hyperfine coupling",
    "resonance",
    "spectroscopy"
  ],
  "references": [
    "PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1101 (https://doi.org/10.1351/pac199466051077)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/coupling-constant/"
}