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Structure and Bondi...
Structure and Bonding of gamma-B-28: Is the High Pressure Form of Elemental Boron Ionic?
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- Haeusserman, Ulrich (författare)
- Arizona State University
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- Mikhaylushkin, Arkady (författare)
- Linköpings universitet,Teoretisk Fysik,Tekniska högskolan
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(creator_code:org_t)
- 2010-08-23
- 2010
- Engelska.
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Ingår i: INORGANIC CHEMISTRY. - : ACS American Chemical Society. - 0020-1669 .- 1520-510X. ; 49:24, s. 11270-11275
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- The recently characterized crystal structure of metastable gamma-B-28 is analyzed from a crystal chemical point of view, and the electron requirement of its building units and that of their linkage is determined. The structure consists of unique B-2 dumbbells and B-12 icosahedra, which are connected through two-center and three-center, two-electron bonds. The different bonding motifs are ascertained by theoretical calculations of difference charge distributions. Chemical bonding in high pressure gamma-B-28 bears great resemblance to alpha-B-12 which is the simplest boron modification. The previously made description of gamma-B-28 as ionic in terms of (B2)(delta+) and (B-12)(delta-) is not supported.
Nyckelord
- TECHNOLOGY
- TEKNIKVETENSKAP
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