Term: one-bond-flip (OBF)
https://doi.org/10.1351/goldbook.OT07432

Definition:
Photoisomerization of one double bond in a conjugated double bond system. It is a regular E/Z photoisomerization. OT07432.png Compare with bicycle-pedal (BP) mechanism, hula-twist (HT) mechanism.

Related Terms:
1) photoisomerization (http://doi.org/10.1351/goldbook.P04622-1).
2) photoisomerization (http://doi.org/10.1351/goldbook.P04622-2).
3) bicycle-pedal (bp) mechanism (http://doi.org/10.1351/goldbook.BT07330).
4) hula-twist (ht) mechanism (http://doi.org/10.1351/goldbook.HT07393).

Image: Not defined (https://goldbook.iupac.org/img/inline/OT07432.png) 

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)

Citation: 'one-bond-flip (OBF)' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.OT07432

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