A guest-free germanium clathrate

Article Abstract:

The high-yield synthesis and characteristics of germanium with the empty clathrate-II structure through the oxidation of [Ge.sub.9][.sup.4-] Zintl anions in ionic liquids under ambient conditions is reported. The reported method demonstrates the potential of ionic liquids as media for the reactions of polar intermetallic phases.

United States, Science & research, Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Germanium, Research, Phase transformations (Statistical physics), Phase transitions (Physics), Clathrate compounds, Properties

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Amorphous silica-like carbon dioxide

Article Abstract:

The synthesis of an amorphous, silica-like form of carbon dioxide, a-C[O.sub.2], called a-carbonia, is reported. The results show that the class of archetypal network forming disordered systems which include a-Si[O.sub.2], a-Ge[O.sub.2] and water must be extended to include a-C[O.sub.2].

Austria, All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Silicon Dioxide, Analysis, Observations, X-rays, X-ray diffraction, Raman spectroscopy, Chemical synthesis, Chemical properties

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