Sodium tetrachloroplatinate

Compounds Ammonium chloroplatinate sodium chloroplatinate platinic chloride platinum chloride sodium tetrachloroplatinate potassium tetrachloroplatinate ammonium tetrachloroplatinate sodium hexachloroplati-nate potassium hexachloroplatinate ammonium hexachloroplatinate... 

A full report on the c.d. of square-planar complexes formed between chiral olefins and sodium tetrachloroplatinate shows that a quadrant rule (Figure 6) predicts the sign of the Cotton effect near 440 nm for a range of disubstituted and some trisubstituted ethylenes. The Pt atom is considered to bond to the less-hindered face of the olefinic bond. Despite the success of the quadrant rule... 

Aqueous zinc nitrate similarly treated gave the colorless crystalline bis (triaminopropane) zinc di-iodide (X) (20). An aqueous solution of sodium tetrachloroplatinate(II), Na2[PtCl4], when treated with two equivalents of the triamine, heated until clear, and then concentrated and added to aqueous sodium bromide and iodide gave the colorless bis(triamino-propane)-platinum(II) dibromide (XI X = Br), m.p. 270-271°C., and the di-iodide (XI X = I), m.p. 266-267°C., respectively. The fact that in these salts (which were sufficiently stable for recrystallization from hot water) the divalent platinum was showing the exceptional coordination number of 6—i.e., that it was coordinated to all six amino groups of the two triamine molecules, was shown by the addition of the dibromide to an excess of sodium picrate, both in cold aqueous solution, whereby only the dipicrate (XI X = C6H2N3O7) was precipitated had any amino groups remained uncoordinated, they also would have formed picrates (1928) (19). 

Elsevier and co-workers [30] reported an example of a selective C-H band activation with sodium tetrachloroplatinate in inverse micelles. A solution of the catalyst in D2O was dispersed in the presence of AOT in either n-heptane or methylcyclohexane. CH/CD exchange was observed under mild conditions in the CH3 groups with high selectivity. 

Charge-transfer complexes of dissymmetric olefins with either tetracyano-ethylene or Pt (sodium tetrachloroplatinate) exhibit chiroptical effects related to the chirality of the olefin. TT)e Pt complexes generally obey a Quadrant Rule. Chiral olefins may also be converted into osmate esters, exhibiting Cotton effects in the region of 480 nm the sign obeys a chirality rule (Figure 3) which... 

The submitters report that substitution of an ethanolie solution of sodium tetrachloroplatinate(II) reduces the time necessary for ethylene absorption to 1 day. 

Sodium tetrachloroplatinate(ll) tetrahydrate Na3PtCl4 4H3O 10026-00-3 464.938 red prisms 100 s H,0, FtOH... 

Two examples of selective metal deposition follow. Parallel cylindrical PS-b-PMMA is treated with a palladium colloid, which selectively deposits on top of the polystyrene domains.Electroless deposition of nickel then forms on the palladium particles. Alternatively, PS-b-P4VP with cylindrical P4VP aligned parallel to the substrate is soaked in a weakly acidic aqueous solution of metal salts such as gold chloride, sodium tetrachloroplatinate, and sodium tetrachloropalla-date. ° ° A plasma etch removes the polymer film and reduces the metal patterned in the P4VP domains. 

The Stock Oxidation-Number System. Stock sought to correct many nomenclature difficulties by introducing Roman numerals in parentheses to indicate the state(s) of oxidation, eg, titanium(II) chloride for TiCl2, iron(II) oxide for FeO, titanium(III) chloride for TiCl, iron(III) oxide for Fe203, titanium(IV) chloride for TiCl, and iron(II,III) oxide for Fe O. In this system, only the termination -ate is used for anions, followed by Roman numerals in parentheses. Examples are potassium manganate(IV) for K2Mn02, potassium tetrachloroplatinate(II) for K PtCl, and sodium hexacyanoferrate(III) for Na3Fe(CN)3. Thus a set of prefixes and terminations becomes uimecessary. 

Pt(NH3)4Cl2] [PtCl4] Tetraamminedichloropaltinum(IV) tetrachloroplatinate(II) Na2[CrOF4] Sodium tetrafluorooxochromate(IV)... 

Sodium arenetellurolates reacted with an equimolar amount of dipotassium tetrachloroplatinate (II) in ethanol at 20° to produce polymeric (arenetellurolato) chloroplatinum compounds2. 

This base (as the trihydrochloride) reacted with hexachloroplatinic(IV) acid to form the salt, XXXIV, in which the central nitrogen atom becomes asymmetric attempts to resolve it not unexpectedly failed as this group would almost certainly have very low, optical stability. The salt, XXXIV, when treated with silver salts, lost hydrogen chloride with the formation of the salt, XXXV. With potassium tetrachloroplatinate(II), the salt, XXXVI (X = Cl), was obtained and was more readily isolated after treatment in solution with sodium bromide or iodide as the cream-colored XXXVI (X = Br) or XXXVI (X = I), respectively. The free base reacted with aquopentamminocobaltic trichloride to give the... 

Hydroxylamine is used as a reductant in the synthesis of coordination compounds.The complex, [RuCl(NO)(py)4][PF6], undergoes a one-electron electrochemical oxidation in aqueous solution and this complex is obtained by reduction of [RuCl(N0)(py)4][C104]2 with hydroxylamine, followed by addition of ammonium hexafluorophosphate. 8 Like hydrazine, hydroxylamine can act as both a reductant and as a ligand. Stetsenko has shown that Alexander s base, [Pt(NH20H)4][0H]2, is obtained in high yield from potassium tetrachloroplatinate by reduction with excess hydroxylamine hydrochloride in the presence of sodium carbonate. 

The commercial products PEGDE (Fluka, > 98 %), CTAB (Serva, 99 %), n-hexane (Merck,P.A), hydrazine hydrate (Fluka, > 99 %), sodium perrhenate (Alfa, 99,95 %), potassium tetrachloroplatinate (Alfa, 99,9 %) and hexachloroplatinic acid (Alfa,P.A) were used without further purification. 

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