期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 21, 期 22, 页码 8222-8228出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201500550
关键词
cluster compounds; ligand elimination; metalloid clusters; quantum chemistry; tin
资金
- Deutsche Forschungsgemeinschaft (DFG)
- Fonds der Chemischen Industrie
- NRW Forschungsschule Molecules and Materials-A Common Design Principle
Chemistry that uses metalloid tin clusters as a starting material is of fundamental interest towards understanding the reactivity of such compounds. Since we identified {Sn-10[Si(SiMe3)(3)](4)}(2-) 7 as an ideal candidate for such reactions, we present a further step in the understanding of metalloid tin cluster chemistry. In contrast to germanium chemistry, ligand elimination seems to be a major reaction channel, which leads to the more open metalloid cluster {Sn-10[Si(SiMe3)(3)](3)}(-) 9, in which the Sn core is only shielded by three Si(SiMe3)(3) ligands. Compound 9 is obtained through different routes and is crystallised together with two different countercations. Besides the structural characterisation of this novel metalloid tin cluster, the electronic structure is analysed by (119)SnMossbauer spectroscopy. Additionally, possible reaction pathways are discussed. The presented first step into the chemistry of metalloid tin clusters thus indicates that, with respect to metalloid germanium clusters, more reaction channels are accessible, thereby leading to a more complex reaction system.
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