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Issue 43, 2012
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Many M©Bn boron wheels are local, but not global minima

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Twenty-six planar boron wheels with a central hypercoordinate atom (M©Bn, M is a 2nd or 3rd period element) were designed following the Schleyer–Boldyrev concept of geometric and electronic fit whereby in-plane σ- as well as π-aromaticity contribute to the chemical bonding. Global minimum searches using an efficient newly implemented method reveal that most of these boron wheels are only local, rather than global minima. However, the Be©B8 triplet planar wheel global minimum is a new member of the planar hypercoordinate M©Bn family. Six categories classify the structures of the other global minima: planar wheels, planar non-wheel forms, quasi-two-center-wheels, as well as leaf-like, pyramid-like, and umbrella-like geometries.

Graphical abstract: Many M©Bn boron wheels are local, but not global minima

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Publication details

The article was received on 11 May 2012, accepted on 20 Aug 2012 and first published on 20 Aug 2012

Article type: Paper
DOI: 10.1039/C2CP41521F
Citation: Phys. Chem. Chem. Phys., 2012,14, 14898-14904
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    Many M©Bn boron wheels are local, but not global minima

    Y. Liao, C. L. Cruz, P. von Ragué Schleyer and Z. Chen, Phys. Chem. Chem. Phys., 2012, 14, 14898
    DOI: 10.1039/C2CP41521F

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