Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
Dalton Trans. 2010 Feb 28;39(8):1901-15. doi: 10.1039/b918480e. Epub 2009 Dec 16.
Compounds with cage-like structures of elemental silicon and carbon are comparatively reviewed. Barium containing silicon clathrate compounds isomorphous with type I gas hydrates were prepared using high pressure and high temperature (HPHT) conditions, and found to become superconductors. The application of HPHT conditions to Zintl binary silicides have produced a number of silicon-rich cage-like structures including new clathrate structures; most of them are superconductors. Carbon analogs of silicon clathrates can be prepared by 3D polymerization of C(60) under HPHT conditions, which are new allotropes of carbon with expanded framework structures. The crystal chemistry and characteristic properties of some related compounds are also reviewed.
比较了具有元素硅和碳笼状结构的化合物。使用高压高温（HPHT）条件制备了与 I 型气体水合物同构的含钡硅笼化合物，并发现它们成为超导体。将 HPHT 条件应用于 Zintl 二元硅化物，产生了许多富硅笼状结构，包括新的笼型结构；它们大多数都是超导体。在 HPHT 条件下，通过 C（60）的 3D 聚合可以制备硅笼的碳类似物，这是具有扩展骨架结构的碳的新同素异形体。还综述了一些相关化合物的晶体化学和特性。
