Title: cumulative double bonds
Long Title: IUPAC Gold Book - cumulative double bonds
DOI: 10.1351/goldbook.C01437
Status: current

Definition
Those present in a chain in which at least three contiguous carbon atoms are joined by double bonds; non-cumulative double bonds comprise every other arrangement of two or more double bonds in a single structure. The generic name 'cumulene' is given to compounds containing three or more cumulative double bonds.

Source
- Blue Book, p. 20 (https://www.acdlabs.com/iupac/nomenclature/)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/C01437/html
- json: https://goldbook.iupac.org/terms/view/C01437/json
- xml: https://goldbook.iupac.org/terms/view/C01437/xml

Citation: Citation: 'cumulative double bonds' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.C01437
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Accessed: 2026-05-15T02:36:09+00:00