Carbon monosulphide

Carbon Monosulphide, CS.—This sulphur analogue of carbon monoxide is described as resulting8 on passing carbon disulphide vapour over spongy platinum, pumice stone or red-hot charcoal. It is also formed by the action of the silent electric discharge 7 on carbon disulphide or on a mixture of the latter with either hydrogen or carbon monoxide, thus ... 

After the nickel chloride has been extracted from the solid product by water, a brown substance remains which has the empirical formula CS, but which, on account of its being a non-volatile solid, must be a polymer, (CS). According to Dewar and Jones,8 carbon monosulphide is an endothermic gas which is condensable by liquid air and which rapidly polymerises to (CS) at atmospheric temperature. 

I. Loss of carbon monosulphide from metastable ions ... 

From carbon disulphide and hydrogen Hydrogen sulphide and carbon monosulphide ... 

Coordination of unbonded electron pairs may also occur with carbon monoxide (or carbon monosulphide) in association reactions in which the adduct is stabilized by collision or by the emission of radiation (26) ... 

Poly(methylene disulphide), poly(methylene tetrasulphide), poly(ethylene disulphide) and poly(ethylene tetrasulphide) are photodegraded under UV irradiation with the formation of carbon monosulphide (CS), carbon disulphide (CS2) and hydrogen sulphide (HS) according to the mechanism [1047, 1971] ... 

Various attempts to achieve reductive dimerization of CSg in order to obtain tetrathio-oxalates have been unsuccessful, the product isolated after methylation always being the l,3-dithiole-2-thione (167). Carbon monosulphide, CS , is involved in the formation of (167), and has been detected as the stable complex Rh(CS)(PPh3)2. ... 

Finally mention should be made of the 2-electron ligand carbon monosulphide, CS. This lignnd forms complexes with transition metals and may be considered to be similar to carbon monoxide an example is shown in 1.22 [102]. 

Figure 11.15. Typical chemical groupings in a sulphur-vulcanised natural rubber network, (a) Monosulphide cross-link (b) disulphide cross-link (c) polysulphide cross-link (j = 3-6) (d) parallel vicinal cross-link (n = 1-6) attached to adjacent main-chain atoms and which have the same influence as a single cross-link (e) cross-links attached to common or adjacent carbon atom (f) intra-chain cyclic monosulphide (g) intra-chain cyclic disulphide (h) pendent sulphide group terminated by moiety X derived from accelerator (i) conjugated diene (j) conjugated triene (k) extra-network material (1) carbon-carbon cross-links (probably absent)...

J. J. Berzelius melted sulphur with an excess of potassium hydroxide and found the product to be a mixture of the monosulphide and thiosulphate. J. Kircher passed hydrogen sulphide over coarsely powdered sodium hydroxide at 100°. M. J. Fordos and A. Gelis made sodium sulphide by heating sodium carbonate with sulphur to 275° the product is obviously a kind of soda-liver of sulphur. J. W. Kynaston melted sodium hydroxide With calcium sulphide and J. V. Esop, and C. Vincent treated a soln. of barium or other sulphide with sodium or potassium... 

In 1861, W. Gossage showed that calcium sulphide is insoluble in water, and is but little attacked by sodium carbonate he also showed that the residue left after the lixiviation of black ash is a mixture of calcium monosulphide and carbonate, even when no sodium sulphide is present in the liquor and that if any sodium sulphide be present in the liquor, it is derived from the formation of calcium polysulphides in the black ash which can be prevented by using an excess of limestone. Both J. W. Kynaston and W. Gossage showed that no sodium hydroxide is present in black ash because (a) sodium hydroxide melted with black ash forms calcium oxide and sodium carbonate and (b) no sodium hydroxide can be extracted with... 

Ammonium thiocarbonate, (NH4)2CS3, may be prepared by digesting ammonium pentasulphide with carbon disulphide under a reflux condenser a white deposit of ammonium monosulphide first forms on the condensing surface and is gradually converted into the thiocarbonate, becoming pale oiange-coloured. On exposure to moist air it turns red. 

Cyanogen monosulphide crystallises in rhomboidal crystals which partly sublime at 30° to 40° C. and melt at 60° C. It is soluble in water, alcohol, ether, carbon disulphide, chloroform, benzene and sulphuric acid. It is decomposed by hydrochloric acid. It precipitates iodine from potassium iodide. Alcoholic potash decomposes it into potassium cyanate and potassium thiocyanate ... 

Cobalt Monosulphide, Cobaltous Sulphide, CoS, occurs in nature as the mineral syepoorite or jaipurite. The mineral has been prepared artificially by fusing cobalt sulphate with barium sulphide and sodium chloride.8 The monosulphide is also obtained by heating a solution of cobalt sulphite9 to 200° C., or a mixture of solutions of cobalt salts with ammonium thiocyanate to 180° C., in either case in sealed tubes,10 and by heating cobalt sulphate and carbon to the temperature of the electric arc.11... 

The oxide is reduced by hydrogen, carbon monoxide, and by carbon. The reduction in an atmosphere of hydrogen begins at about 190° C.3 The oxide burns in fluorine, and when heated in hydrogen sulphide yields water and the monosulphide, NiS. Pellini (vide infra) ascribes the following graphical formula to the dioxide ... 

It is a white, crystalline solid, very deliquescent, freely soluble in water, and moderately soluble in alcohol. When exposed to air it evolves hydrogen sulphide,1 and is completely decomposed by heat into this gas and sodium monosulphide.2 The anhydrous salt is also obtained by the interaction at 300° C. of sodium monosulphide and hydrogen sulphide free from carbon dioxide and oxygen.3 Sabatier s4 method is to saturate a solution of sodium sulphide with hydrogen sulphide, and concentrate in an atmosphere of the same gas. A solution can be obtained by saturating sodium-hydroxide solution with hydrogen sulphide. A dihydrate and a trihydrate have been described.5... 

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