Ferric nitride

Two other nitrides of iron have been prepared,2 namely, ferrous nitride, Fe3N2, and ferric nitride, FeN. The former is described as a black, oxidisable powder, obtained by heating lithium nitride with ferrous potassium chloride. The ferric nitride, FeN, resulted when lithium nitride was heated with ferric potassium chloride. It is a black substance, which, on being heated in air, oxidises to ferric oxide. These substances are, presumably, ferrous and ferric substituted ammonias, the constitutional formulae being —... 

CL must be very carefully purified to exclude small concentrations of (1) ferric ions which would catalyze die thermal oxidative degradation of polycaprolactam and (2) aldehydes and ketones which would markedly increase oxidizability of CL. The impurities in CL may retard die rate of CL polymerization as well as having a harmful effect on die properties of die polymer fiber. In die vacuum depolymerization of nylon-6, a catalyst must be used because in die absence of a catalyst by-products such as cyclic olefins and nitrides may form, which affects the quality of die CL obtained.1... 

Hexammino-vanadium Trichloride, [V(NH3)6]C13.—The similarity between the trichlorides of iron and vanadium is further shown in their behaviour towards ammonia. At ordinary temperatures ammonia reacts with vanadium trichloride to produce vanadium nitride, VN, and ammonium chloride, but if liquid ammonia is poured over vanadium trichloride, a quantitative yield of a reddish-brown salt, [V(NH3)6]C13, is obtained, which recalls the hexammines of cobalt and chromium. The ammonia molecules are not, however, very firmly held, and the compound is, therefore, more comparable with the corresponding hexammine of ferric chloride, [Fe(NH3)6]Cl3. 

The vanadium tetrachloride distils over and is purified from any ferric chloride present either by distillation or by extraction of the product with carbon tetrachloride, in which only the vanadium halide is soluble.2 Sulphuryl chloride, thionyl chloride, sulphur monochloride, and phosgene can all be used in the last reaction instead of chlorine, and the ferrovanadium also can be substituted by vanadium carbide, V4C3,3 nitride, VN,4 subsilicide, V2Si,5 disilicide, VSi2,8 or pentoxide.7... 

E. Baur and G. L. Voerman studied the action of hydrogen—vide supra. According to G. J. Fowler, in air or oxygen, there is a very slight action at 120° and oxidation is visible at 200°—brown ferric oxide is formed, but no nitrogen is oxidized water vapour, at 1000°. produces a slow evolution of ammonia. A. Rossel prepared a nitride, which is readily decomposed by water, by heating a mixture of finely powdered calcium carbide and powdered iron while exposed to air. G. J. Fowler... 

Ferric oxide is attacked by chlorine at high temperatures, yielding a sublimate of ferric chloride,6 the same salt being also produced upon ignition of the oxide in hydrogen chloride.7 Ammonia, under similar conditions, is oxidised to water, a nitride of iron being produced. 

Croft explains the results in terms of the acceptor property of the boron atoms. They tend to take an electron pair from a donor molecule to form sp bonds. This is why only halides in lower oxidation states react with boron nitride (e.g., CuCl and SbCls but not Cuds or SbCls) This is different from the case of graphite in which the carbon planes are a source of electrons. The intercalation of aluminum and ferric chlorides is attributed by Croft to bonding by the electron pairs of the nitrogen atoms of boron nitride. It is surprising, however, that boron trifluoride and trichloride, which are particularly good electron acceptors, appear unable to become intercalated. 

BIS (p-CHLOROPHENYL)-2,2,2-TRICHLOROETHANE or 2,2-BIS (p-CHLOROPHENYL)-l,l-TRICHLORO-ETHANE or 2,2-BIS (p-CHLORO-PHENYL)-l,l,l-TRICHLOROETHANE or ,a-BIS (p-CHLOROPHENYL)-/ ,/ ,/ -TRICHLORETHANE (50-29-3) C14H9CI5 Combustible solid (flash point 324 to 340°F/162 to 171°C). Incompatible with strong oxidizers reducing agents, including metal hydrides, nitrides, sulfides, alkali metals, and metal alkyls ferric chloride aluminum chloride salts of iron or aliuniniun alkalis and alkaline media. May be incompatible with many alkali metals ... 

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