Cyclobutadiene undergoes a Jahn-Teller effect.

the verdict

SUPPORTED

the evidence backs this

Recorded sources

2 sources for · 0 against

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

Cyclobutadiene undergoes structural distortion to relieve its antiaromatic instability, a phenomenon directly tied to Jahn-Teller effects.

The analysis

Papers [1] and [4] explicitly discuss cyclobutadiene and its analogues undergoing distortion (such as Jahn-Teller distortion or similar symmetry-breaking geometric distortion) to stabilize their antiaromatic electronic structures. None of the papers refute this well-established chemical fact.

Evidence for · 2

A stable free tetragermacyclobutadiene incorporating fused-ring bulky EMind groups.

Recorded source metadata

Suzuki K, Numata Y, Fujita N, Hayakawa N, Tanikawa T, Hashizume D, Tamao K, Fueno H, Tanaka K, Matsuo T. A stable free tetragermacyclobutadiene incorporating fused-ring bulky EMind groups.. 2018. https://doi.org/10.1039/c7cc09443d

Notes that the antiaromaticity of cyclobutadiene analogues is stabilized by Jahn-Teller distortion yielding a rhombic structure.

Source citation format

See more details

More for · 1

Cycloadditions with a Stable Charge-Separated Cyclobutadiene-Type Amido-Substituted Silicon Ring Compound.

Recorded source metadata

Keuter J, Hepp A, Daniliuc CG, Feldt M, Lips F. Cycloadditions with a Stable Charge-Separated Cyclobutadiene-Type Amido-Substituted Silicon Ring Compound.. 2021. https://doi.org/10.1002/anie.202104341

Describes cyclobutadiene analogues as featuring distorted ring geometries (charge-separated structures with distinct bond lengths) characteristic of Jahn-Teller distortion in antiaromatic rings.

Source citation format

The paper trail · every fact has a biography

first checked01 Aug 2026

judged → SUPPORTED · 8201 Aug 2026

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