Mercurous chloride addition product

Other methods have also been used for producing mercurated anisoles and phenetoles of the type RPIgX. (1) The type R2Hg, e.g. mercur3 dianisyl, is treated with an alcoholic solution of mercuric chloride. (2) The mercuric chloride addition products of the triarylstibines, RgSb. HgClg, are boiled in alcoholic solution. 

Low levels of mercuric chloride in polymorphonuclear cells may profoundly alter the cell respiratory burst, measured as chemiluminiscence, oxygen consumption and H2Oz production [171-173], depress phagocytic capacity [172, 173] and enhance release of lysosomal enzymes [ 172] with minimal loss of cell viability. A stimulation of oxygen metabolism in vivo might promote tissue injury, via the local production of free oxygen metabolites, in addition to depression of host defence [173],... 

Mercuric chloride in methanol also reacts with compounds 8 (in dichloro-methane), forming colorless mercury complexes, which can in turn be reconverted to the cyanines 8. Such addition compounds are stable only as solids, decomposing rather quickly in solution. Mercuric acetate in methanol reacts rapidly with the formation of elemental mercury, where by the phosphamethin-cyanines are destroyed uniform products from this reaction have not as yet been isolated. 

Phenyl selenide, CeHg.SeH.1—This selenide may be obtained as follows (1) Selenium tetrachloride is allowed to react with benzene in the presence of aluminium chloride. (2) Magnesium phenyl bromide in ether solution is treated with finely divided selenium and the addition product treated with cold hydrochloric acid. The ether layer is then removed, the extracted solution treated with more ether and the extracts combined, then shaken with one equivalent of sodium hydroxide, calculated on the basis of the total amount of selenium used, and dissolved in water to make a 25 per cent, solution. The ether solution is then dried with calcium chloride, the ether removed and the residue distilled, diphenyl diselenide and diphenyl selenide, B.pt. 303° C., being obtained. The sodium hydroxide solution on acidification with a slight excess of concentrated hydrochloric acid, followed by three more extractions with ether, gives on removal of the solvent almost pure phenyl selenide, B.pt. 182° C. The product melts at 60° C., and is insoluble in water, but dissolves in alcohol mercuric chloride gives a white precipitate.2... 

I he mononitrotoluenes form addition products with le ih.Tgariic salts. This property differs from the rjr ifri M hi. s. niJeh form their addition products i ii-Mi V ti. or. iio tvniiioiuiils. Walker and Spencer . h ,>e pfs luce i an aluminium chloride compound of ij..riOii triitolii ne. and Mascarelli (7) isolated an n t oi para nitrotoluene and mercuric... 

With Mercuric Chloride.—Equimolccular quantities of the two compounds when treated as above soon yield a white, odourless, solid additive eomimund. The latter decomposes on heating with water with formation of eaeodylic and hydrochloric acids, mercurous chloride and mercury. When liltered, the hot aqueous filtrate deposits odourless, glistening, rhombic plates, which decompose without melting at 210 C., and have the (tomposition (CII.,)2A.sCl(OII)llgCl. The formation of this product is rcj)rescntcd by the equations ... 

All the tertiary arsines of the types AtjAs and ArAtj As are solids, which form addition products with mercuric chloride of the type RgAs.HgClj, and many of them combine with platinic chloride in alcohol... 

Pyridine is a tertiary amine its aqueous solution shows an alkaline reaction and precipitates the hydroxides of metals, some of which are soluble in an excess of the amine. Salts of pyridine like those of other amines form characteristic double salts with metallic halides. The ferrocyanide of pyridine and the addition-product of pyridine and mercuric chloride are difficultly soluble in water these compounds are used in the purification of the base. Pyridine is a very stable compound it can be heated with nitric acid or chromic acid without undergoing change but at 330° it is converted by a mixture of nitric acid and fuming sulphuric acid into nitropyridine, a colorless compound that melts at 41° and boils at 216°. At a high temperature pyridine is converted into a sulphonic acid by sulphuric acid. Chlorine and bromine form addition-products, e.g., C5H5N.CI2, at the ordinary temperature when these are heated to above 200°, substitution-products are formed. The hydroxyl derivative of pyridine is made by fusing the sulphonic acid with sodium hydroxide it resembles phenol in chemical properties. The three possible carboxyl derivatives of pyridine are known. The a-acid is called picolinic acid, the jS-acid nicotinic acid (664), and the 7-acid isonicotinic acid. 

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