Electron-Poor Polar Intermetallics: Complex Structures, Novel Clusters, and Intriguing Bonding with Pronounced Electron Delocalization
| Autor: | Gordon J. Miller, Qisheng Lin |
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| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Accounts of Chemical Research. 51:49-58 |
| ISSN: | 1520-4898 0001-4842 |
| Popis: | ConspectusIntermetallic compounds represent an extensive pool of candidates for energy related applications stemming from magnetic, electric, optic, caloric, and catalytic properties. The discovery of novel intermetallic compounds can enhance understanding of the chemical principles that govern structural stability and chemical bonding as well as finding new applications. Valence electron-poor polar intermetallics with valence electron concentrations (VECs) between 2.0 and 3.0 e–/atom show a plethora of unprecedented and fascinating structural motifs and bonding features. Therefore, establishing simple structure-bonding-property relationships is especially challenging for this compound class because commonly accepted valence electron counting rules are inappropriate.During our efforts to find quasicrystals and crystalline approximants by valence electron tuning near 2.0 e–/atom, we observed that compositions close to those of quasicrystals are exceptional sources for unprecedented valence electron-poor po... |
| Databáze: | OpenAIRE |
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