Preparation and precise structural determination of a second Ga84 cluster compound. A first hint for cluster doping and its fundamental consequences in the field of chemistry and physics of nanoscaled metalloid cluster material |
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Authors: | Schnepf Andreas Jee Bettina Schnöckel Hansgeorg Weckert Edgar Meents Alke Lübbert Daniel Herrling Erik Pilawa Bernd |
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Institution: | Institut für Anorganische Chemie der Universit?t Karlsruhe (TH), Engesserstr., Geb. 30.45, D-76128 Karlsruhe, Germany. |
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Abstract: | The Ga(84)R(20)(4-) R = N(SiMe(3))(2)] species, which represents the largest metalloid cluster entity structurally characterized so far, has been electronically and topologically modified: Via changing the redox potential of the reaction solution, crystals different from those containing the Ga(84)R(20)(4-) anion can be isolated, featuring similar Ga(84)R(20)(3-) entities. An accurate crystal structure analysis via synchrotron radiation is presented, which might be the first step toward an understanding of the metallic conductivity and superconductivity of the Ga(84)R(20)(4-) cluster compound, physical properties which are singular in the field of metalloid clusters so far. |
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