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the claim

A compound can be aromatic overall even if it contains anti-aromatic rings.

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

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

Chemical systems containing locally antiaromatic rings can exhibit overall global aromaticity or diatropicity.

The analysis

The retrieved papers provide clear computational and structural evidence that polycyclic systems containing locally antiaromatic rings (such as indacene, pentalene, or cyclobutadienoid moieties) can achieve global aromaticity or global pi-electron delocalization.

Evidence for · 3
Sterically controlled 5-<i>exo</i>-dig cyclization enables synthesis of non-benzenoid polycyclic aromatic hydrocarbons with intriguing (anti)aromaticity and diradical properties.
Recorded source metadata

Chen L, Shangguan Z, Shi T, Qin L, Zeng Y, Zhu Q, Chen J, Liang J, Miao W, He Y, Qiu X, Wang X, Zhang D, Yang R. Sterically controlled 5-<i>exo</i>-dig cyclization enables synthesis of non-benzenoid polycyclic aromatic hydrocarbons with intriguing (anti)aromaticity and diradical properties.. 2026. https://doi.org/10.1039/d6sc00121a

Paper [3] demonstrates that non-benzenoid polycyclic aromatic hydrocarbons can maintain global aromaticity even when containing antiaromatic indacene or pentalene subunits.

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More for · 2
Oxidation of [3]naphthylenes to cations and dications converts local paratropicity into global diatropicity.
Recorded source metadata

Cárdenas A, Jin Z, Ni Y, Wu J, Xia Y, Ramírez FJ, Casado J. Oxidation of [3]naphthylenes to cations and dications converts local paratropicity into global diatropicity.. 2025. https://doi.org/10.3762/bjoc.21.20

Paper [5] shows that oxidized states of [3]naphthylenes, which consist of fused aromatic and antiaromatic moieties, convert into overall globally diatropic molecules.

Three wrongs make a right: a computational investigation of [4<i>n</i>]-[4<i>n</i>]-[4<i>n</i>] fused π-systems.
Recorded source metadata

Khan MUG, Młodzikowska-Pieńko K, Gershoni-Poranne R, Wu JI. Three wrongs make a right: a computational investigation of [4<i>n</i>]-[4<i>n</i>]-[4<i>n</i>] fused π-systems.. 2026. https://doi.org/10.1039/d5sc07395b

Paper [7] discusses how fusing antiaromatic units can afford delocalized pi-systems with reduced paratropicity or weak diatropicity overall.

The paper trail · every fact has a biography
first checked01 Aug 2026
judged → SUPPORTED · 7501 Aug 2026
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