{Sn<sub>9</sub>[Si(SiMe<sub>3</sub>)<sub>3</sub>]<sub>3</sub>}<sup>−</sup> and {Sn<sub>8</sub>Si[Si(SiMe<sub>3</sub>)<sub>3</sub>]<sub>3</sub>}<sup>−</sup>: Variations of the\nE<sub>9</sub> Cage of Metalloid Group 14 Clusters
Claudio Schrenk (1565533)Marco Neumaier (1956364)Andreas Schnepf (1565530)
Abstract
The disproportionation reaction of the subvalent metastable\nhalide\nSnBr proved to be a powerful synthetic method for the synthesis of\nmetalloid cluster compounds of tin. Hence, the neutral metalloid cluster\ncompound Sn<sub>10</sub>[Si(SiMe<sub>3</sub>)<sub>3</sub>]<sub>6</sub> (<b>3</b>) was synthesized from the reaction of SnBr with\nLiSi(SiMe<sub>3</sub>)<sub>3</sub>. In the course of the reaction\n anionic clusters might also be present, and we now present the first\nanionic cluster compound {Sn<sub>8</sub>E[Si(SiMe<sub>3</sub>)<sub>3</sub>]<sub>3</sub>}<sup>−</sup> (E = Si, Sn), where one\nposition in the cluster core is occupied by a silicon or a tin atom,\ngiving further insight into structural variations of E<sub>9</sub> cages in metalloid group 14 cluster compounds.
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