Selective One-Pot Syntheses of Mixed Silicon-Germanium Heteroadamantane Clusters |
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Authors: | M. Sc. Benedikt Köstler Dr. Michael Bolte Dr. Hans-Wolfram Lerner Prof. Dr. Matthias Wagner |
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Affiliation: | Institut für Anorganische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Straße 7, 60438 Frankfurt am Main, Germany |
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Abstract: | SixGey alloys are emerging materials for modern semiconductor technology. Well-defined model systems of the bulk structures aid in understanding their intrinsic characteristics. Three such model clusters have now been realized in the form of the SixGey heteroadamantanes [0] , [1] , and [2] through selective one-pot syntheses starting from Me2GeCl2, Si2Cl6, and [nBu4N]Cl. Compound [0] contains six GeMe2 and four SiSiCl3 vertices, whereas one and two of the GeMe2 groups are replaced by SiCl2 moieties in compounds [1] and [2] , respectively. Chloride-ion-mediated rearrangement quantitatively converts [2] into [1] at room temperature and finally into [0] at 60 °C, which is not only remarkable in view of the rigidity of these cage structures but also sheds light on the assembly mechanism. |
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Keywords: | cluster compounds germanium rearrangements SiGe alloys silicon |
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