Tetranitrogen tetrasulfide

Tetranitrogen tetrasulfide is prepared by the method of Villena-Blanco and Jolly. Piperidine is stored over 4-A molecular sieves and pentane over calcium hydride. Absolute ethanol is heated at reflux with magnesium turnings and a few crystals of iodine for 4 hr. The solvents and piperidine are distilled immediately before use. The reaction is conducted under an atmosphere of dry nitrogen in a one-necked flask (200 mL) equipped with a side arm. 

Tetranitrogen tetrasulfide is prepared by the method of Villena-Blanco and Jolly" and is recrystallized from toluene before use. Diphenylphosphinous chloride (Aldrich) is used as received. Acetonitrile is dried over phosphorus pentoxide and then calcium hydride, and distilled from CaH2 when needed. The reaction is carried out in an oven-dried one-necked 100-mL flask fitted with a side arm and under an atmosphere of dry nitrogen, which is also used for the work-up procedure. 

Caution. Tetranitrogen tetrasulfide used in this procedure is explosive. The greatest of care should be taken in handling S N. ) Under no circumstances should it be heated suddenly or struck care should be taken to avoid trapping it in ground glass joints. Refer to the previous safety note." The reaction should be carried out in a fume hood since some of the tin compounds formed have unpleasant odors and are of unknown toxicity. 

Tetranitrogen Tetrasulfide. See Sulfur Nitride in Vol 8, N102-L to N103-L... 

Thiotrithiazyi iodide (or Thionitrosostdfonium iodide). (NS)3SI mw 297.16 N 14.14% red solid. Soly is similar to the chloride shown above. Prepn is by treating Tetranitrogen Tetrasulfide with HI in the presence of a trace of moisture. The iodide is termed an expl by the refs... 

Write the formula of the compoimd (a) tetranitrogen tetrasulfide (b) ammonium chromate (c) bromic add (d) calcium hypochlorite. 

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