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'Monothiazyl Chloride Stability' in keywords
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1980 (1)
1Author    M. P. Berthet, H. Vincent, Y. MonteilRequires cookie*
 Title    A New Preparation of S4N4  
 Abstract    Pure S4N4 is prepared by a new method from reduction of S3N3CI3 by various metals (Hg, Cu, Sn). Realized either in an inert solvent or directly in gaseous phase the reaction is complete. The stability range of NSC1 has been determined by Raman spectrometry. Tetrasulfur tetranitride is a very interesting product because it is the starting material for many products containing sulfur and nitrogen. In the usual method S4N4 (1) is prepared by bubbling gaseous ammonia through a solution of sulfur di-chloride dissolved in an inert solvent: 16 NH3 + 6 SCls -> S4N4 + 12 NH4C1 + 2 S Besides S4N4, NH4C1 and S, the S7NH imine is also formed in small quantity. NH4CI is easily eliminated by iced water. The separation of S4N4 from the obtained mixture is difficult. The three compounds (S4N4, S7NH and S) have similar molecular struc-tures (puckered eight-membered rings), they have similar solubilities in solvents and are difficult to separate from one another. The extraction of S4N4 by dioxane permits to partly eliminate sulfur. S4N4 can be purified by chromatography on an alumina column (2), benzene, a good solvent for S4N4, is used for its elution. By sublimation under vacuum it is possible to eliminate sulfur from S4N4, but this method is dangerous due to the explosive character of S4N4. The methods of purification are long and not always very efficient. For the first time, we have prepared S4N4 in a high purity grade from S3N3CI3 which can be easily obtained (3). This new method consists in the action of reducing metals such as Hg, Cu or Sn on S3N3CI3 either in an inert solvent or directly in gaseous phase. The identification and the stability of the different gaseous compounds have been studied by infrared and Raman spectro-scopy. 
  Reference    Z. Naturforsch. 35b, 329—331 (1980); received September 17/November 16 1979 
  Published    1980 
  Keywords    Tetrasulfur Tetranitride Synthesis, Thiazyl Halogenide Decomposition, Metal Reaction, Monothiazyl Chloride Stability, IR Spectra 
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 Identifier    ZNB-1980-35b-0329 
 Volume    35