Analogies between Boron and Carbon

The structural connections between the compounds of boron and carbon are extended using the mno rule beyond the borane−carbocation continuum, the lithium boride−polycarbyne analogy, and the magnesium boride (MgB2)−graphite equivalence to β-rhombohedral boron and fullerenes. The structural similarity...

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Published inAccounts of chemical research Vol. 36; no. 11; pp. 816 - 824
Main Authors Jemmis, Eluvathingal D, Jayasree, Elambalassery G
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 01.11.2003
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Summary:The structural connections between the compounds of boron and carbon are extended using the mno rule beyond the borane−carbocation continuum, the lithium boride−polycarbyne analogy, and the magnesium boride (MgB2)−graphite equivalence to β-rhombohedral boron and fullerenes. The structural similarity of the pentagonal pyramidal C6H6 2+ and MgB4 is established. An interesting electronic structural relationship between the B84 fragment of the β-rhombohedral boron and the fulleride anion, C60 12-, is derived by replacing the 12 pentagonal pyramidal B6 4- units by isoelectronic C5 - units and removing the central B12 from the electron-deficient B84 unit. This relationship is well supported by the experimental realization of C60M12 (M = Li, K) and C48N12.
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ISSN:0001-4842
1520-4898
DOI:10.1021/ar0300266