Chloroplatinic acid

• Chloridoplatinsäure
• Dihydrogenhexachloridoplatinat (IV)
• Dihydrogenhexachloroplatinat (IV)
• Chloroplatinic acid
• Chloroplatinic acid

• H2PtCl6 (anhydrous acid)
• H2PtCl6 · 6 H2O (hexahydrate )

Yellow to red-brown, crystalline solid

517.90 g · mol -1 ( hexahydrate)

Fixed

2.4 g · cm -3

60 ° C ( hexahydrate)

Soluble in water

Risk

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Hexachloridoplatinsäure H2 [ PtCl6 ] is a chemical compound. Pure Hexachloridoplatinsäure is a yellow to pale orange, highly hygroscopic, deliquescent in air substance. With often minimal existing iridium impurities, the color varies from red to brown or even darker. Which salts are referred to as the Hexachloridoplatinsäure Hexachloridoplatinate.

Representation

Hexachloridoplatinsäure can be represented by oxidative dissolution of platinum in aqua regia:

From aqueous solution while the Hexachloridoplatinsäure hexahydrate H2 [ PtCl 6 ] · 6 H2O is produced, which can be dehydrated to the dihydrate. In addition, a decay takes place in water, hydrochloric acid and platinum tetrachloride, all of the protons of the oxonium ion after removal of the water not suitable coordination site on the [ PtCl 6 ] 2 - ion found.

Salts

In the reaction of the acid with various cations such as potassium (K ), rubidium (Rb ), cesium (Cs ), ammonium (NH4 ), silver ( Ag ) and thallium (Tl ) thereby arise sparingly soluble yellow precipitates of the general formula M 2 [ PtCl 6 ] that Hexachloridoplatinate.

Use

Hexachloridoplatinsäure is the starting material for the synthesis of platinum-based cytotoxic drugs, such as cisplatin, oxaliplatin or carboplatin. Hexachloridoplatinsäure is for the preparation of catalysts by impregnation of carriers used for example for the three -way catalyst, or for the catalytic reforming. Can be set on the support by selecting the impregnation conditions while the distribution of the metal.