CB 4 Se 5 : a planar tetracoordinate carbon CB 4 core stabilized by peripheral Se/Se 2 bridges.
Li-Xia BaiRui SunYan-Bo WuJin-Chang GuoPublished in: Chemical communications (Cambridge, England) (2024)
Replacing one of the peripheral Se with a Se 2 bridge is an effective strategy to flatten the C 4v CB 4 Se 4 cluster. The global minimum of CB4Se 5 contains one fan-shaped planar tetracoordinate carbon (ptC) CB 4 core, possessing double 2π + 6σ aromaticity. The peripheral Se 2 bridge is dexterous and crucial for the stability of CB 4 Se 5 .
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