Planar or tetrahedral? A ternary 17-electron CBe₅H₄⁺ cluster with planar pentacoordinate carbon
2020
Guo, Jin-Chang | Feng, Lin-Yan | Barroso, Jorge | Merino, Gabriel | Zhai, Hua-Jin
A 17-electron CBe₅H₄⁺ cluster features planar pentacoordinate carbon, owing to the 2π/6σ double aromaticity. The neutral CBe₅H₄ cluster has a tetrahedral configuration despite its 18-electron counting. The latter species is governed by σ conjugation.
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