Auric chloride

The alkaloids are strong bases, which turn red litmus blue, and are very slightly soluble m water. They form soluble salts and double salts wdth platmic and auric chlorides. The principal general reagents for the alkaloids are ... 

Auric chloride Au + 2Cl AuCl. It is important to note that the Cl used here must be hot chlorine gas. 

Formula AuCls MW 303.33 exists as a dimer, AU2CI6 in solid and vapor state forms a dihydrate, AuCls 2H2O Synonyms gold trichloride auric chloride. 

Gold(lll) hydroxide is precipitated by mixing aqueous solutions of potassium auric chloride and sodium carbonate ... 

Ammino-derivatives of Auric Salts and Oxides.—Auric chloride, like platinic chloride, combines with hydrochloric acid and alkali chlorides with formation of ehlorauric acid, HAuC14, and alkali chlor-... 

If dilute chloraurie acid containing ammonium chloride is added to a cold saturated solution of ammonium chloride saturated with ammonia only one compound is obtained, namely, diamino-auric chloride, Au(NH2)2C1. This is a yellow powder which is non-explosive and is decomposed by washing with water, forming a derivative of aurous oxide of composition 3Au0.2NH3.,dH20, which is explosive. 

Both diamino-imino-diauric chloride, NH(AuC1NH2)2, and diamino-auric chloride, Au(NH2)2C1, if treated with successive quantities of... 

SbCh]-----and [ShCle]". Crystals of cesium aurous auric chloride,... 

Silver nitrate in ammoniacal solution may be completely reduced to silver by aqueous arsenious oxide. The reduction is hindered by the presence of ammonium sulphate, owing to the decrease in concentration of the hydroxyl ions 5 neutral salts such as sodium sulphate or sodium nitrate have no effect. Similarly, auric chloride may be reduced to gold.6 At 20° C. an aqueous solution of vitreous arsenious oxide reacts 4 to 5 times as rapidly as an aqueous solution of the octahedral form 7 the greater rate of dissolution in water of the former variety has been mentioned (p. 137), but from supersaturated solutions of the two forms there is no appreciable difference in the rates of deposition. The explanation of the inferior reducing power of the crystalline variety may be that there exist anisotropic molecules which only slowly lose their anisotropic properties. An ammoniacal solution of arsenious oxide heated with cupric sulphate in a sealed tube at 100° C. causes reduction... 

Gold Arsenate is precipitated as a yellowish-white powder when sodium orthoarsenate is added to a hot solution of auric chloride.12... 

When an alkali perarsenate is added to aqueous solutions of metallic salts, precipitates containing active oxygen are obtained thus salts of the alkaline earths, zinc, cadmium, silver, mercurous mercury, lead and bismuth yield white precipitates, mercuric salts give red precipitates, copper blue, manganese pink, nickel greenish-white and ferrous salts bluish-green. With auric chloride oxygen is liberated, and with ferric chloride feme hydroxide is precipitated. 

With monoolefins apparently simple complexes of the type [AuCI-(olefin)] were obtained (74-76), whereas di- and triolefins gave dimeric species. With norbornadiene both monomeric and dimeric compounds were isolated (74). A gold(I) complex was also obtained from the reaction of auric chloride with hexamethyl Dewarbenzene (77). 

AURIC AND AUROUS. Prefixes often used in the naming of gold salts of valence +i (ic) and +1 (ous). Thus, auric chloride, aurous nitrate, and so on. 

N 16.08% tetrg pyramid crysts(from ale), mp 134-135° very sol in w sol in chlf diffc sol in other org solvs was prepd by heating piperazine with ethylene chlorohydrin.at 105°. This compd forms numerous salts, such as Hydrochloride, Hydrobromide, Nitrate. The Auric Chloride or Gold Trichloride, C8H1BN202+2HCl+2AuCl3, forms It yel ndls(from dil HC1), mp 205-207° (dec) and the Picrate, yel ndls(from ale), mp 245 246° (dec)... 

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