Planar or tetrahedral? A ternary 17-electron CBe5H4+ cluster with planar pentacoordinate carbon

• Published in: Chemical communications (Cambridge, England) Vol. 56; no. 59; pp. 8305 - 8308
• Main Authors: Guo, Jin-Chang, Feng, Lin-Yan, Barroso, Jorge, Merino, Gabriel, Zhai, Hua-Jin
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 28.07.2020
• Subjects: Aromaticity; Carbon; chemical compounds; chemical reactions; Clusters; Conjugation; Electrons

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.