Insights Into Symmetry and Substitution Patterns Governing Singlet-Triplet Energy Gap in the Chemical Space of Azaphenalenes.

Chemistry · 2026 · PMC13107512 · PMID 41641875

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a clear trendno p-value reported

A clear trend is observed along the series cyclazine (1AP) → 1,6‐biazacyclazine → 1,3,6,7‐tetraazacyclazine → heptazine (7AP), corresponding to a progressive decrease in the STG.

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