Multiplet

{
  "id": "MLC-T-CHM-007668",
  "term": "Multiplet",
  "field": "Chemistry",
  "definition": "A group of closely spaced lines in a spectrum, arising from the splitting of a single energy level or transition into several components due to interactions within the molecule. In nuclear magnetic resonance (NMR) spectroscopy, a multiplet results from spin-spin coupling between neighboring nuclei. The number of lines in a multiplet follows the n+1 rule for equivalent neighboring protons.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "nuclear magnetic resonance spectrum"
  ],
  "references": [
    "PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 697 (https://doi.org/10.1515/pac-2019-0203)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/multiplet/"
}