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Ditellurium Bromide
Ditellurium bromide is the inorganic compound with the formula Te2 Br. It is one of the few stable lower bromides of tellurium. Unlike sulfur and selenium Selenium is a chemical element with the symbol Se and atomic number 34. It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, ..., tellurium forms families of polymeric subhalides where the halide/chalcogen ratio is less than 2. Preparation and properties Te2Br is a gray solid. Its structure consists of a chain of Te atoms with Br occupying a doubly bridged site. It is prepared by heating tellurium with the appropriate stoichiometry of bromine near 215 °C. The corresponding chloride and iodide, Te2Cl and Te2I, are also known. Other tellurium bromides include the yellow liquid Te2Br2, the orange solid TeBr4,Zhengtao Xu "Recent Developments in Binary Halogen–Chalcogen Compounds, Polyanions a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tritellurium Dichloride
Tritellurium dichloride is the inorganic compound with the formula Tellurium, Te3Chloride, Cl2. It is one of the more stable lower chlorides of tellurium. Preparation and properties Te3Cl2 is a gray solid. Its structure consists of a long chain of Te atoms, with every third Te center carrying two chloride ligands for the repeat unit -Te-Te-TeCl2-. It is a semiconductor with a band gap of 1.52 eV, which is larger than that for elemental Te (0.34 eV). It is prepared by heating Te with the appropriate stoichiometry of chlorine. Other lower tellurium chlorides Te2Cl2 (ditellurium dichloride) is a yellow liquid prepared by reaction of lithium polytellurides with TeCl4, TeCl4. Te2Cl, also a polymer, is a metastable gray solid, tending to convert to Te3Cl2 and TeCl4. Tellurium dichloride (TeCl2) is unstable with respect to disproportionation, and has not been isolated as a solid, but has been characterised as the main component of the vapor formed with TeCl4 and hot Te. Several com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
