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The Synthesis of [Sn10(Si(SiMe3)3)4]2- Using a Metastable Sn(I) Halide Solution Synthesized via a Co-condensation Technique
Published on: November 28, 2016
Structural trends and chemical bonding in Te-doped silicon clathrates
Nicolas Jaussaud1, Michel Pouchard, Pierre Gravereau
1Institut de Chimie de la Matière Condensée de Bordeaux, UPR-CNRS 9048, Université de Bordeaux 1, 87 Ave. Docteur Albert Schweitzer, 33608 Pessac Cedex, France.
Abstract:
The recently discovered tellurium-doped silicon clathrates, Te7+xSi20-x and Te16Si38, both low- and high-temperature forms (cubic and rhombohedral, respectively), exhibit original structures that are all derived from the parent type I clathrate G8Si46 (G = guest atom). The similarities and differences between the structures of these compounds and that of the parent one are analyzed and discussed on the basis of charge distribution and chemical bonding considerations. Because of the particular character of the Te atom, these compounds appear to be at the border between the clathrate and polytelluride families.
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