Sulfur tellurium

Alkali metals Moisture, acetylene, metal halides, ammonium salts, oxygen and oxidizing agents, halogens, carbon tetrachloride, carbon, carbon dioxide, carbon disul-flde, chloroform, chlorinated hydrocarbons, ethylene oxide, boric acid, sulfur, tellurium... 

Magnesium Air, beryllium fluoride, ethylene oxide, halogens, halocarbons, HI, metal cyanides, metal oxides, metal oxosalts, methanol, oxidants, peroxides, sulfur, tellurium... 

Stable noble-gas compounds have no industrial uses as of this writing but are frequently utilized in laboratories as fluorinating and oxidizing agents. Xenon difluoride and xenon tetrafluoride are relatively mild oxidative fluorinating agents and have been used for the preparation of phosphoms, sulfur, tellurium. 

Current IUPAC and Chemical Abstracts nomenclature has been employed in this index with the former given preference. Substitutive nomenclature has been given preference over radicofunc-tional, additive, subtractive, conjunctive or replacement nomenclature, except where this becomes unwieldy. With many bicyclic and polycyclic compounds bearing heteroatoms, standard bicyclic or polycyclic oxa, aza, and thia replacement nomenclature has often been used. With certain functional groups, where the names are rather complex and probably not familiar to most organic chemists, such as ylides, those compounds have simply been named as sulfur, tellurium and arsonic ylides. Metal catbenes have been treated similarly. With more complex functionality and many heterocycles, the Beilstein Commander Crossfire nomenclature system has been used with certain modifications. 

Aluminum(III)—sulfur—tellurium bonds, covalent and non-covalent, 9, 257... 

Liquid sulfur trioxide is used for sulfonation, especially in the manufacture of detergents. In the past, the difficulty was the instability of the sulfur trioxide. However, under the trade name Sulfans , stabilized forms of sulfur trioxide are available several patented inhibitors such as boron compounds, methane sulfonyl chloride, sulfur, tellurium, and phosphorus oxychloride inhibit crystallization or conversion to a polymer. 

Sulfur, tellurium and nitrogen ylide-catalyzed cyclopropanations have been developed. Enantioenriched cyclopropanes can be synthesized in good yield and moderate to excellent diastereoselectivity. These catalysts are complementary to metal-based cyclopropanation catalysts, and have the potential for further development. 

The reactivity of the representative derivatives 2a and 4a towards P4, elemental sulfur, tellurium, phenylacetylene, benzonitrile, t-butylphosphaacetylene, and cyclopentadiene (see Scheme 3), and furthermore towards benzophenone, 1,2-diphenyl-1,2-diketone, 3,5-di-t-butyl-o-quinone, diphenyldiazomethane, mesitylazide, and mesitylisocyanide was studied (see Scheme 6) [19]. 

Arrange the elements oxygen, sulfur, tellurium, and selenium in order of increasing atomic radii. Is your order an example of a group trend or a period trend ... 

Cathodic Behavior of Sulfur, Tellurium, and Selenium an Easy Way... 

The largest number of selenium atoms in covalent selenium chain compounds isolated so far appears to be three, and even so, the representative compounds known are relatively few in number. In the case of tellurium, the maximum number is two. Rbeinboldt (191) has recently reviewed preparative methods for di- and triselenides, ditellurides, and compounds containing mixed sulfur-selenium and sulfur-tellurium chains. 

Trisulfcdes and Triselenides, and Compounds with Mixed Three-Membered Sulfur-Selenium and Sulfur-Tellurium Chaim... 

The experiments on sulfur, tellurium, and selenium-tellurium alloys reveal a systematic character to the optical properties of these fluids. With increasing temperature and pressure, sulfur becomes more like selenium near its melting point while with decreasing temperature, tellurium begins to resemble selenium at very high temperatures and pressures. Addition of tellurium to selenium simulates the effect on pure selenium of increasing the temperature and pressure. 

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