one-bond-flip

initialism: OBF
https://doi.org/10.1351/goldbook.OT07432
Photoisomerization of one double bond in a conjugated double bond system. It is a regular E/Z photoisomerization.
molecule
Compare with bicycle-pedal mechanism, hula-twist mechanism.
Source:
PAC, 2007, 79, 293. (Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)) on page 377 [Terms] [Paper]