Potassium tetrachloroplatinate

Potassium tetrachloroplatinate

Chembox new
ImageFile = K2PtCl4.png ImageSize = 200px
IUPACName = Potassium tetrachloroplatinate(II)
OtherNames = Potassium tetrachloroplatinate Potassium Chloroplatinite
Potassium tetrachloridoplatinate
Section1 = Chembox Identifiers
CASNo = 10025-99-7
PubChem =
SMILES =

Section2 = Chembox Properties
Formula = Cl4K2Pt
MolarMass = 415.09
Appearance = reddish solid
Density = 3.38 g/cm3
MeltingPt =
BoilingPt =
Solubility = 0.93 g/100 mL (16 °C) 5.3/100 mL (100 °C)

Section3 = Chembox Hazards
MainHazards = allegenic
FlashPt =
Autoignition =

Potassium tetrachloroplatinate(II) is the chemical compound with the formula K2PtCl4. This reddish pink-colored salt is an important reagent for the preparation of other coordination complexes of platinum. It consists of potassium cations and the square planar dianion PtCl42-. Related salts are also known including K2PtCl4, which is brown-colored and soluble in alcohols, and quaternary ammonium salts, which are soluble in a broader range of organic solvents.

Preparation

Potassium tetrachloroplatinate is prepared by reduction of the corresponding hexachloroplatinate salt with hydrazine.cite journal | author = Keller, R. N.; Moeller, T. | title = Potassium Tetrachloroplatinate(II) | journal = Inorg. Synth. | year = 1963 | volume = 7 | pages = 247-250 | doi = 10.1002/9780470132333.ch79] K2PtCl6 is one of the salts that is most easily obtained from platinum ores. The complex is appreciably soluble only in water. Treatment with alcohols, especially in the presence of base, causes reduction to platinum metal. Conversion to organic salts, such as [PPN] 2PtCl4 are soluble in chlorocarbons. [cite journal | author = Elding, L. I.; Oskarsson, A.; Kukushkin, V. Yu | title = Platinum Complexes Suitable as Precursors for Synthesis in Nonaqueous Solvents | journal = Inorg. Synth. | year = 1997 | volume = 31 | pages = 276-279 | doi = 10.1002/9780470132623.ch47]

Reactions

The chloride ligands on [PtCl4] 2- are displaced by many other ligands to afford derivatives::PtCl42− + 2 PPh3 → "cis"-PtCl2(PPh3)2 + 2 ClThe anti-cancer drug Cisplatin can similarly be prepared::PtCl42− + 2 NH3 → "cis"-PtCl2(NH3)2 + 2 ClDithiolates displace all four chloride ligands to give bis(dithiolene) complexes. [Scott D. Cummings, Richard Eisenberg "Acid-Base Behavior of the Ground and Excited States of Platinum(II) Complexes of Quinoxaline-2,3-dithiolate" Inorganic Chemistry 1995, vol. 34, p 3396-3403.] Reduction gives colloidal platinum of potential interest in for catalysis. [Ahmadi, T. S. "Science" volume 272, page 1924ff (1996)]

References


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Potassium hexachloroplatinate — chembox new ImageFile= ImageSize= IUPACName= OtherNames= Section1=Chembox Identifiers CASNo= PubChem=61856 SMILES=Cl [Pt 2] (Cl)(Cl)(Cl)(Cl)Cl. [K+] . [K+] Section2=Chembox Properties Cl=6 | K = 2 | Pt = 1 Appearance= Density= MeltingPt=… …   Wikipedia

  • coordination compound — Chem. complex (def. 10). Also called coordination complex. * * * ▪ chemistry Introduction  any of a class of substances with chemical structures in which a central metal atom is surrounded by nonmetal atoms or groups of atoms, called ligands… …   Universalium

  • C-H bond activation — Carbon hydrogen bond activation or CH activation may be defined as a reaction that cleaves a carbon hydrogen bond. Often the term is restricted to reactions involving organometallic complexes and proceeding by coordination of a hydrocarbon to the …   Wikipedia

  • Carbon–hydrogen bond activation — or C−H activation may be defined as a reaction that cleaves a carbon–hydrogen bond. Often the term is restricted to reactions involving organometallic complexes and proceeding by coordination of a hydrocarbon to the inner sphere of metal, either… …   Wikipedia

  • Organoplatinum — chemistry is the chemistry of organometallic compounds containing a carbon to platinum chemical bond, and the study of platinum as a catalyst in organic reactions.[1][2][3] Organoplatinum compounds exist in oxidation state 0 to IV, with oxidation …   Wikipedia

  • Dictionary of chemical formulas — This is a list of chemical compounds with chemical formulas and CAS numbers, indexed by formula. This complements alternative listings to be found at list of inorganic compounds, list of organic compounds and inorganic compounds by element. Table …   Wikipedia

  • Cisplatin — Systematic (IUPAC) name (SP 4 2) diamminedichloridoplatinum …   Wikipedia

  • Tetrakis(triphenylphosphine)platinum(0) — Chembox new Name = Tetrakis(triphenylphosphine)platinum(0) ImageFile = Tetrakis(triphenylphosphine)platinum(0) 3D sticks.png ImageName = 3D model of the tetrakis(triphenylphosphine)platinum(0) molecule IUPACName =… …   Wikipedia

  • Dichloro(cycloocta-1,5-diene)platinum(II) — Dichloro(cycloocta 1,5 diene)platinum(II) …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”