MLchartDataset catalogue

Sum band

Term · Chemistry · MLC-T-CHM-011576

An absorption or emission band in a vibrational spectrum that arises from the simultaneous excitation of two or more normal modes of vibration, where the energy of the transition is the sum of the energies of the individual modes. These bands are typically weaker than fundamental bands and provide information about anharmonicity in molecular vibrations. They are observed in infrared and Raman spectroscopy.

Table 1. Record
IdentifierMLC-T-CHM-011576
FieldChemistry
SubjectAnalytical Chemistry
ReferencesPAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 764 (https://doi.org/10.1515/pac-2019-0203)
See alsoSum transition
Record as JSON 
{
  "id": "MLC-T-CHM-011576",
  "term": "Sum band",
  "field": "Chemistry",
  "definition": "An absorption or emission band in a vibrational spectrum that arises from the simultaneous excitation of two or more normal modes of vibration, where the energy of the transition is the sum of the energies of the individual modes. These bands are typically weaker than fundamental bands and provide information about anharmonicity in molecular vibrations. They are observed in infrared and Raman spectroscopy.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "sum transition"
  ],
  "references": [
    "PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 764 (https://doi.org/10.1515/pac-2019-0203)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/sum-band/"
}

Record 12,336 of 13,676 in Chemistry terminology (MLC-0109). Request the full dataset.