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- W2034564847 abstract "Two leapfrog isomers of a B112 boron fullerene are constructed from small C28 fullerenes (Td and D2 symmetries) by the leapfrog transformation combined with omnicapping of the new hexagons. Their electronic structure is analyzed using the density functional theory at the B3LYP/SVP and BHLYP/SVP levels. Both isomers are characterized as minima on the potential energy hypersurface with a HOMO–LUMO gap at B3LYP/SVP of 1.7 eV and 1.6 eV (3.1 and 3.0 eV at BHLYP/SVP), respectively. The optimized structure of the helical D2-leapfrog is asymmetric, due to radial displacements of the capping atoms. The computed cohesive energies amount to −4.2 eV (∼0.04 eV lower than B80). The B112 isomers are isoelectronic to Td-C84 and D2-C84, and HOMO and LUMO orbitals in both isomers closely resemble those of their C84 homologues. Energetic stability of leapfrogboron fullerenes depends on the isolation of empty hexagon criterion, which is defined by the empty hexagon index based on the total number of empty hexagon pairs and empty hexagon–pentagon fused pairs. The switch of the cap atom to the nearest or farthest empty hexagon destabilizes the cage by 1.6 and 2.7 eV, respectively. The destabilization becomes more enhanced in non-leapfrog structures wherein more caps are displaced." @default.
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- W2034564847 date "2011-01-01" @default.
- W2034564847 modified "2023-09-30" @default.
- W2034564847 title "The leapfrog principle for boron fullerenes: a theoretical study of structure and stability of B112" @default.
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- W2034564847 doi "https://doi.org/10.1039/c0cp02130j" @default.
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