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the claim

Cis-trans isomers can interconvert via thermal or photochemical activation overcoming the rotational barrier

the verdict
SUPPORTED
the evidence backs this
Recorded sources
4 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that cis-trans isomers can interconvert via thermal or photochemical activation overcoming the rotational barrier?

Yes. Multiple studies demonstrate that cis-trans isomers can interconvert through thermal or photochemical activation by overcoming rotational or torsional energy barriers.

Verdict: SUPPORTED · 4 sources for, 0 against · Last checked

The analysis

The retrieved papers consistently support the fundamental chemical principle that cis-trans isomerisation can be driven thermally and photochemically via rotational and torsional pathways across potential energy barriers. Papers [0], [6], [9], and [10] explicitly discuss these thermal and photochemical mechanisms in various molecular systems such as azobenzenes and molecular gears, providing direct evidence for the claim without any conflicting evidence present in the source set.

Evidence for · 4
Multidimensional Potential Energy Surfaces resolved at the RASPT2 level for accurate photoinduced isomerization dynamics of azobenzene.
2019
Demonstrates the photoinduced isomerization dynamics of azobenzene via torsional and rotational pathways on potential energy surfaces.
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Aleotti, F., Soprani, L., Nenov, A., Berardi, R., Arcioni, A., Zannoni, C., & Garavelli, M. (2019). Multidimensional Potential Energy Surfaces resolved at the RASPT2 level for accurate photoinduced isomerization dynamics of azobenzene.. doi.org. https://doi.org/10.1021/acs.jctc.9b00561

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More for · 3
The photochemical trans → cis and thermal cis → trans isomerization pathways of azobenzo-13-crown ether: A computational study on a strained cyclic azobenzene system.
2024
Examines both the photochemical trans to cis and the thermal cis to trans isomerization pathways of azobenzene derivatives.
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DS, S. & A, C. (2024). The photochemical trans → cis and thermal cis → trans isomerization pathways of azobenzo-13-crown ether: A computational study on a strained cyclic azobenzene system.. doi.org. https://doi.org/10.1063/5.0206946

Theoretical investigation on cis-trans isomerisation of azaphosphatriptycene- based molecular gear
2020
Investigates the cis-trans isomerization of molecular systems driven by light and heat through rotational mechanisms.
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Jia, Z., Guan, Q., Wang, H., & Wang, X. (2020). Theoretical investigation on cis-trans isomerisation of azaphosphatriptycene- based molecular gear. doi.org. https://doi.org/10.1080/10610278.2020.1842406

On the unexpected mechanism of isomerization in tautomerizable azo photoswitches.
2026
Explains how thermal and photochemical activation strategies control cis-trans back-isomerization and rotational transition states.
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C, H., CJ, B., WJ, P., & O, M. (2026). On the unexpected mechanism of isomerization in tautomerizable azo photoswitches.. doi.org. https://doi.org/10.1038/s42004-026-01952-5

Receipt History
first checked04 Aug 2026
judged → SUPPORTED · 8604 Aug 2026
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