Arsine chloride

SYNS BLUE CROSS CLARK I DA DIPHENYL-ARSINOUS CHLORIDE DIPHENYLCHLOORARSINE (DUTCH) DIPHENYLCHLOROARSINE (DOT) SNEEZING GAS... 

Arsinic chloride-3-diazo-4-phenol or l-Arsinic chloride-3 4-quinone-3-diazide.—This has the constitution (IV), and is obtained as follows 3-Amino-4-hydroxyphenylarsinic acid, when diazotised in 5N hydrochloric acid and subsequently treated with sulphur dioxide and hydriodic acid as described above, yields a compound CgHjONaClgAs, which on solution in methyl alcohol and precipitation by ether loses 1 molecule of hydrogen chloride, giving the diazide. In this preparation 1-arsinic acidrS-diazo-4s phenol is also obtained. 

RhAs4C102C2]H]2, Rhodium(l + ), (carbon dioxide)bis[o-phenylenebis(dimethyl-arsine)]-, chloride, 21 101 RhBN4Ct,H , Rhodium(I), tetrakis(l-isocy-anobutane)-, tetraphenylborate(l-), 21 50... 

Arsindoles are prepared by cyclization of aryl vinyl arsinous chlorides and aryl vinyl chlorides. Atkinson s review details the generality of these approaches <84CHEC-i(i)539>. In a method of limited scope, the arsindole (33) is prepared by reaction of ASCI3 with the acetylene salt (Equation (33)) <80JHC1341>. 

LEWISITE. A group of three closely related chlorovinyl arsine chemicals lewisite-1 (2-chlorovinyl arsine dichloride, CjHjAsClj), lewisite-2 ( /s[2-chlorovinyl] arsine chloride, C4H4ASCI3), and lewisite-3 (tns[2-chlorovinyl] arsine, CgH AsClg). Lewisite-1 was the intended product of lewisite production, but the other two were often present as by-products. Therefore, lewisite is commonly used to refer to lewisite-1 alone. The name honors Winford Lee Lewis (1878-1943), who took credit for their original synthesis and characterization in April 1918. 

In the example given below, phenylarsonic acid is reduced to dichlorophenyh arsine, Ccll jAsCl. This compound when added to aqueous sodium hydroxide and treated with benzyl chloride gives benzylphenylarsinic acid, which is readily isolated from solution. 

Butynediol is more difficult to polymerize than propargyl alcohol, but it cyclotrimerizes to hexamethylolbenzene [2715-91 -5] (benzenehexamethanol) with a nickel carbonyl—phosphine catalyst (64) with a rhodium chloride—arsine catalyst a yield of 70% is claimed (65). 

For many years a major route to the production of vinyl chloride was the addition of hydrochloric acid to acetylene (Figure 12.5). The acetylene is usually prepared by addition of water to calcium carbide, which itself is prepared by heating together coke and lime. To remove impurities such as water, arsine and phosphine the acetylene may be compressed to 15 Ibf/in (approx. 100 kPa), passed through a scrubbing tower and chilled to -10°C to remove some of the water present and then scrubbed with concentrated sulphuric acid. 

Air emissions for processes with few controls may be of the order of 30 kilograms lead or zinc per metric ton (kg/t) of lead or zinc produced. The presence of metals in vapor form is dependent on temperature. Leaching processes will generate acid vapors, while refining processes result in products of incomplete combustion (PICs). Emissions of arsine, chlorine, and hydrogen chloride vapors and acid mists are associated with electrorefining. 

These precursors are generally prepared by alkane elimination (Equation (7a)) or—especially useful with bulkier substituents—the coupling of metal chlorides with lithium pnictides or silyl arsines (Equation (7b)) or salt elimination or silyl halide elimination reactions (Equation (7c)) ... 

The reaction is complete when the clear supernatant solution in the reaction vessel no longer contains chlorine as detected by the addition of dilute nitric acid and silver nitrate solution to ca. 1-ml. of the clear solution withdrawn from the reaction flask. After the reaction is complete, the ice bath is removed, and stirring is continued for 2 hours at room temperature. After standing overnight, the dimethylammonium chloride is filtered and washed with n-hexane, with careful exclusion of the moisture of the atmosphere. The combined filtrates are distilled at atmospheric pressure to remove the solvent. The tris(dimethylamino)arsine distills at 36°/2 mm. (55 to 57°/10 mm.). The yield is 402 g. (78%). 

This type of reaction was originally carried out with ethyl iodide1 and has been extended to other alkyl halides,2 halogeno-carboxylic esters3 and to substituted arsine halides.4 Incidentally when p-toluene sulphonyl chloride and naphthalene-2-sulphonyl chloride were allowed to react with sodium diethyl phosphite, the corresponding disulphones were obtained in small yield.5... 

Theory The official process is a development of the Gutzeit Test wherein all arsenic present is duly converted into arsine gas (AsH3) by subjecting it to reduction with zinc and hydrochloric acid. Further, it depends upon the fact that when arsine comes into contact with dry paper permeated with mercuric (Hg2+) chloride it produces a yellow strain, the intensity of which is directly proportional to the quantity of arsenic present. The various chemical reactions involved may be expressed by the following equations ... 

The reaction of toluene solutions of indium trichloride and tris(trimethylsilyl)arsine resulted in the formation of a very fine dark-brown powder subsequently annealed up to 400°C to drive to completion the elimination of trimethyl-silyl-chloride. Nanocrystalline InAs was obtained. Similar reactions with InBr3 and Inl3 and P compounds have been discussed. Previously a similar reaction was described by Uchida et al. (1993) (reaction of indium acetylacetonate with tris(trimethylsilyl)arsine in refluxing triglyme). Subsequently the reaction with InCl3 was used by Guzelian et al. (1996) in the preparation of nano-crystal quantum dots. They compared different preparation methods and techniques useful to isolate specific size distributions. 

Arsine is a strong reducing agent, reducing many oxidizing agents, i.e, reduces chlorine to hydrogen chloride ... 

Arsine reacts with cupric chloride solution to give cupric arsenide. Oxidation with stannic chloride, SnCR, forms hydrogen diarsenide, AS4H2. It reacts with dilute silver nitrate solution forming metallic silver. 

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