Systematic search uncovers new planar-tetracoordinate-nitrogen species, suggesting novel structural possibilities.
A systematic search over cationic clusters N(XE)₄⁺ (X = B-Tl, E = O-Po) uncovers eight new planar-tetracoordinate-nitrogen species: N©(AlPo)₄⁺, N©(GaE)₄⁺ (E = Se-Po) and N©(InE)₄⁺ (E = S-Po). High-level calculations confirm closed-shell minima, while magnetic criteria show only local diatropicity, ruling out global σ/π aromaticity.
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Sacanamboy et al. (2026) studied this question.
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