Title: one-bond-flip
Long Title: IUPAC Gold Book - one-bond-flip
DOI: 10.1351/goldbook.OT07432
Status: current

Definition
Photoisomerization of one double bond in a conjugated double bond system. It is a regular E/Z photoisomerization.  Compare with bicycle-pedal mechanism, hula-twist mechanism.

Related Terms
- Photoisomerization: https://goldbook.iupac.org/terms/view/P04622
- bicycle-pedal mechanism: https://goldbook.iupac.org/terms/view/BT07330
- hula-twist mechanism: https://goldbook.iupac.org/terms/view/HT07393

Source
- PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 377 (https://doi.org/10.1351/pac200779030293)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/OT07432/html
- json: https://goldbook.iupac.org/terms/view/OT07432/json
- xml: https://goldbook.iupac.org/terms/view/OT07432/xml

Citation: Citation: 'one-bond-flip' 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.OT07432
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Accessed: 2026-07-23T23:11:40+00:00