Nitride sulfides

In the group, the most familiar members are the oxides, halides, hydrides (including the hydrocarbons), nitrides, sulfides, and carbides. Many methods are available for the preparation of binary compounds, and the most general ones will be illustrated by exercises. 

Si Improves oxidation, nitriding, sulfidation and carburizing resistance. Detrimental to nonoxidizing chlorination resistance Synergistically acts with chromium to improve high-temperature degradation... 

Several t)rpes of materials, over 130 including oxides, nitrides, sulfides, and others have been reported to act as efficient photocatalysts for hydrogen evolution via water splitting. 

The carbides of the early transition metals exhibit chemical and catalytic properties that in many aspects are very similar to those of expensive noble metals [1], Typically, early transition metals are very reactive elements that bond adsorbates too strongly to be useful as catalysts. These systems are not stable under a reactive chemical environment and exhibit a tendency to form compounds (oxides, nitrides, sulfides, carbides, phosphides). The inclusion of C into the lattice of an early transition metal produces a substantial gain in stability [2]. Furthermore, in a metal carbide, the carbon atoms moderate the chemical reactivity through ensemble and ligand effects [1-3]. On one hand, the presence of the carbon atoms usually limits the number of metal atoms that can be exposed in a surface of a metal carbide (ensemble effect). On the other hand, the formation of metal-carbon bonds modifies the electronic properties of the metal (decrease in its density of states near the Fermi level metal—>carbon charge transfer) [1-3], making it less chemically active... 

In the first experiments in which chemistry of metal clusters was demonstrated, the reactant was present in the carrier gas. The problem with this approach is that the reactant is also decomposed during the high-temperature vaporization process, and thus reactive radical fragments are present which may participate in the cluster growth process. Although not exploited, this may be a good method to synthesize metal cluster carbides, oxides, nitrides, sulfides, and hydrides, to name a few. It is not a viable mode of operation for the measurement of reactivity toward molecular species, but has been used to examine the stoichiometry of metal cluster compounds. ... 

Binary compounds with less electronegative elements include hydrides, nitrides, sulfides and phosphides. They are decomposed by water and can provide convenient routes for the preparation of nonmetal hydrides (see Topics B6, F2). The anions may be polyatomic or polymerized, as with... 

The unusual features of the new high temperature superconductors have been outlined. It is suggested that further synthetic studies, using some general guidelines coupled with a few physical property measurements, of new oxides as well as nitrides, sulfides, hydrides, and perhaps even chlorides may well lead to more of these fascinating novel superconductors. 

AMATOL (8006-19-7) A shock- and heat-sensitive explosive mixture of ammonium nitrate (NH4NO3) and trinitrotoluene (C7H5N3O6) that may decompose violently if struck or heated. Either component may react violently (possible detonation) with oxidizers, reducing agents, amines, strong bases, caustics. Incompatible with hydrides, nitrides, sulfides sodium hydroxide potassium hydroxide. 

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