Disulphur dichloride

Further reaction then occurs between the disulphur dichloride and the carbon disulphide ... 

Sulphur and selenium form the chlorides disulphur dichloride S2CI2 and diselenium dichloride Se2Cl2. They are made by the direct combination of the elements. Both are covalent, yellow liquids which are readily hydrolysed by water ... 

Diselenium dichloride acts as a solvent for selenium. Similarly disulphur dichloride is a solvent for sulphur and also many other covalent compounds, such as iodine. S Clj attacks rubber in such a way that sulphur atoms are introduced into the polymer chains of the rubber, so hardening it. This product is known as vulcanised rubber. The structure of these dichlorides is given below ... 

Carbon disulphide Disulphur dichloride Benzene, including benzol Carbon tetrachloride Trichloroethylene Processes in which these substances are used, or given off as vapour, in the manufacture of indiarubber or of articles or goods made wholly or partially of indiarubber... 

Sulphur monochloride, see Disulphur dichloride Sulphur pentafluoride -... 

Carbon disulphide Disulphur dichloride Benzene, including benzol Carbon tetrachloride Trichiorethylene... 

In contact with aluminium, disulphur dichloride provokes the instantaneous ignition of the metal. Lithium batteries contain thionyl chloride. A large number of explosions of batteries have been explained by the violent interaction of lithium with the chloride, which was assumed to be reieased through the anode. Sodium combusts in contact with thionyl chloride vapour heated to a temperature of 300°C. Finally, sulphur dichloride gives rise to explosive mixtures on impact with sodium. 

Boron trifluoride, sulphur and disulphur dichlorides, phosphorus trichloride in the liquid state cause potassium to combust. The same is true for phosphorus pentachloride in the solid state. In the latter case the same accident happened with gaseous halide. The same is also true for the bromide analogues of these compounds. 

Chromyl chloride also has a dangerous oxidising property, which makes it behave in a similar way to chromium trioxide. This goes for ammonia (incandescence), hydrogen sulphide, phosphine, sulphur and disulphur dichloride... 

Its oxidising character plays a role in all other reactions. Surprisingly, it is thought to form explosive dichlorine oxide with chlorine. It leads to a and very exothermic reaction with disulphur dichloride and detonations with metals potassium, K-Na alloy, magnesium with phosphorus and anhydrous or hydrated hydrazine. 

B i s(/V,/V-dial ky I ami no)tri sulphides are formed by treatment of secondary amines with disulphur dichloride, followed by sulphuryl chloride and sodium sulphide, e.g. 

Sulphur Monochloride or Disulphur Dichloride, S2C12, the initial product of the combination of sulphur and chlorine, was first thoroughly studied in 1810 by Davy and Buchholz, independently. 

Disulphur dichloride (S2CI2). In presence of air, WOCI4 and, under exclusion, WCl are formed. 

Hydrogen bromide (but not the chloride) has a catalytic effect on the cyclization of alkenylbenzenes with sulphur. Undo mildly basic conditions, cinnamonitriles on heating with disulphur dichloride give the synthetically useful chloronitriles... 

When primary aromatic amines are treated with sulphur monochloride (8202 > also known as disulphur dichloride)—the Herz reaction—one or more products may be formed. One of these, the benzothiazathiolium salt, on treatment with nitrous acid gives the benzothiadiazole. Depending on the type of substitution in the ring, it is possible to obtain a good yield. The benzene ring may be chlorinated simultaneously, and the thiadiazole may possibly rearrange to another five-membered ring. 

The vapour-state Raman spectra and thermodynamic properties of sulphur dichloride and disulphur dichloride have been determined over the temperature range 300—700 K. 

Synthesis.—The highly hindered thioketones (14)—(17) have been prepared [in the yields shown] by the reaction of triphenylphosphorylidene hydrazone with elemental sulphur, by heating the mixture at 130—140 C under vacuum (1—5 mmHg). The yields are considerably improved when the corresponding hydrazones are allowed to react with disulphur dichloride in the presence of triethylamine in benzene, at 0 °C to room temperature. With the latter.method, the yields of (15)—(17) are quantitative. Thioketones (18)—(20) have also been... 

Disulphur dichloride adds to DM AD in DMF to afford disulphide (219), in which the chlorine atoms can be displaced by nucleophilic agents (SCN, morpholine). ... 

The action of thionyl chloride on cinnamic acid affords 3-chloro-benzothiophen-2-carbonyl chloride (207) ° phenylpropiolic acid and its methyl ester likewise yield 3-chlorobenzothiophen derivatives on treatment with sulphur dichloride, disulphur dichloride, and thionyl chloride, but not with sulphuryl chloride/ The bromo-acid (208) is obtained by the combined action of hydrogen bromide and sulphur dioxide on m-methoxyphenylpropiolic acid. °... 

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