Platinic acid, hexachloro

Elemental composition Pt 52.56%, Cl 47.44%. Platinum tetrachloride may be dissolved in water and analyzed for platinum (see Platinum). Also, it may be identified by its physical properties and certain precipitation reactions after dissolving in HCl (see Platinic Acid, Hexachloro). 

Phosphorus Pentoxide Phosphorus Trichloride Platinic Acid, Hexachloro Platinum... 

Chloroplatinic acid hexahydrate Platinate (2-), hexahydro-, dihydrogen (8) Platinate (2-), hexachloro-, dihydrogen, (OC-6-11)- (9) (16941-12-1)... 

Silicon substituents can also be introduced into alkenes and alkynes by hydrosila-tion.49 This reaction, in contrast to hydroboration, does not occur spontaneously, but it can be carried out in the presence of catalysts, the most common of which is hexachloro-platinic acid, H2PtCI6. Other catalysts are also available.50 Silanes that have one or... 

Formula H2PtCl6 MW 409.81 crystallized as a hexahydrate, H2PtCl6 6H2O Synonyms chloroplatinic acid hexachloroplatinic acid hexachloro platinic-(IV) acid... 

Dichloro(l,5-cyclooctadiene)platinum(II) may be prepared from hexachloro-platinic acid,3 by heating bis(benzonitrile)dichloroplatinum(II)4 in 1,5-cyclo-... 

Hexachlorocyclopentadiene aldrin, chlordane, dieldrin, dienochlor, endosulfan, endrin, mirex Hexachloroparaxylene chlorthal Hexachloro platinic acid silafluofen Hexafluoro acetic anhydride thiazafluron... 

The first example of the hydrosilylation, that is, the reaction occurring between trichlorosilane and 1-octene in the presence of acetyl peroxide, was reported in 1947 by L. H. Sommer (1), but the discovery in 1957 of hexachloro-platinic acid as a very efficient catalyst by J. L. Speier (2) from Dow Coming became a strategic point for wide and common application of the reaction as one of the most fundamental and elegant methods explored over the next 50 years for laboratory and industrial synthesis of organosilicon and other related silicon compounds, which can also be directly subjected to organic synthesis. 

An alcohol reduction method has been applied to the synthesis of polymer-stabilized bimetallic nanoparticles. They have been prepared by simultaneous reduction of the two corresponding metal ions with refluxing alcohol. For example, colloidal dispersions of Pd/Pt bimetallic nanoparticles can be prepared by refluxing the alcohol-water (1 1 v/v) mixed solution of palladium(II) chloride and hexachloro-platinic(IV) acid in the presence of poly(/V-vinyl-2-pyrrolidone) (PVP) at about 90-95°C for 1 h (Scheme 9.1.5) (25). The resulting brownish colloidal dispersions are stable and neither precipitate nor flocculate over a period of several years. Pd/ Pt bimetallic nanoparticles thus obtained have a so-called core/shell structure, which is proved by an EXAFS technique (described in Section 9.1.3.3). 

A vacuum pump, with an intervening trap, is connected to the flask, and the hydrochloric acid solution is evaporated to dryness by placing the flask in a pan of hot water. The product is a crude form of hydrated hexachloroplatinic(IY) acid strong heating must be avoided to prevent decomposition of the solid acid. The solid acid is redissolved in a minimal volume (approximately 10 ml.) of distilled water, and disodium hexachloro-platinate(IV) is precipitated by adding a threefold excess (8.0 g.) of solid sodium chloride to the solution and cooling the mixture in an ice-water bath. J... 

Reactions of the hexachloroplatinate(IV) ion lPtCl6]2 To study these reactions use a 0-5m solution of hexachloroplatinic acid [hydrogen hexachloro-platinate(IV)]. 

Hexachloroplatinic(IV) acid (26 % or 0 5m). Dissolve 2 6 g hexachloro-platinic(IV) acid, H2[PtCl6].6H20, in 10 ml water. 

Bis(ethylenediamine)dihydro.xorhenium(V) hexachloro-platinate(IV) occurs in the form of small gray-green crystals which are unstable in water. The [Re(en)2(OH)2] ion is a very strong acid which has a deep blue color with absorption maxima at 610 and 840 m/t with molar absorbancies of 20.8 and 8.5, respectively. The chloride salt is soluble in concentrated hydrochloric acid. 

DIHYDROGEN HEXACHLOROPLATINATE or DIHYDROGEN HEXACHLORO-PLATINATE(2-) (16941-12-1) Incompatible with sulfuric acid, caustics, ammonia, aliphatic amines, alkanolamines, amides, organic anhydrides, bromine trifluoride, isocyanates, vinyl acetate, alkylene oxides, epichlorohydrin. 

The most important PtIV compounds are salts of the red hexachloro-platinate ion, PtClg. The acid , commonly referred to as chloroplatinic acid, is an oxonium salt (page 167) this or its Na or K salt is the normal starting material for the preparation of many Pt compounds. The ion is formed on dissolving Pt in aqua regia or HC1 saturated with Cl2. The oxidation of PtCl4 and other Pt11 complexes by Cl2 and Br2 has been studied in detail.41 ... 

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