Potassium tetrachloroplatinate is prepared by reduction of the corresponding hexachloroplatinate salt with sulfur dioxide.[1] K2PtCl4 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. Organic tetrachloroplatinate salts, such as [PPN]2PtCl4 are soluble in chlorocarbons.[2]
Enedithiolates displace all four chloride ligands to give bis(dithiolene) complexes.[3] Reduction gives colloidal platinum of potential interest for catalysis.[4]
Historically, an important reaction involves ammonia and [PtCl4]2−. This reaction affords a deep green precipitate with empirical formula PtCl2(NH3)2. This material, known as Magnus' green salt, is a semiconducting coordination polymer consisting of chains of alternating [PtCl4]2− and [Pt(NH3)4]2+ centres.[5]
References
^ abKeller, R. N.; Moeller, T. (1963). Potassium Tetrachloroplatinate(II). Inorg. Synth. Inorganic Syntheses. Vol. 7. pp. 247–250. doi:10.1002/9780470132333.ch79. ISBN9780470132333.
^Elding, L. I.; Oskarsson, A.; Kukushkin, V. Yu (1997). Platinum Complexes Suitable as Precursors for Synthesis in Nonaqueous Solvents. Inorg. Synth. Inorganic Syntheses. Vol. 31. pp. 276–279. doi:10.1002/9780470132623.ch47. ISBN9780470132623.
^Scott D. Cummings; Richard Eisenberg (1995). "Acid-Base Behavior of the Ground and Excited States of Platinum(II) Complexes of Quinoxaline-2,3-dithiolate". Inorg. Chem.34 (13): 3396–3403. doi:10.1021/ic00117a005.
^Ahmadi, T. S.; Wang, Z. L.; Green, T. C.; Henglein, A.; El-Sayed, M. A. (1996). "Shape-Controlled Synthesis of Colloidal Platinum Nanoparticles". Science. 272 (5270): 1924–6. Bibcode:1996Sci...272.1924A. doi:10.1126/science.272.5270.1924. PMID 8662492. S2CID 34481183.
^Caseri, W. (2004). "Derivatives of Magnus' green salt; from intractable materials to solution-processed transistors". Platinum Metals Review. 48 (3): 91–100. doi:10.1595/147106704X1504.
January 29, 2023
potassium, tetrachloroplatinate, chemical, compound, with, formula, k2ptcl4, this, reddish, orange, salt, important, reagent, preparation, other, coordination, complexes, platinum, consists, potassium, cations, square, planar, dianion, ptcl42, related, salts, . Potassium tetrachloroplatinate II is the chemical compound with the formula K2PtCl4 This reddish orange 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 Na2PtCl4 which is brown colored and soluble in alcohols and quaternary ammonium salts which are soluble in a broader range of organic solvents Potassium tetrachloroplatinate NamesIUPAC name Potassium tetrachloridoplatinate 2 Other names Potassium chloroplatiniteIdentifiersCAS Number 10025 99 7 Y3D model JSmol Interactive imageChemSpider 55364 YECHA InfoCard 100 030 034EC Number 233 050 9PubChem CID 61440UNII B74O00UCWC NCompTox Dashboard EPA DTXSID10904020InChI InChI 1S 4ClH 2K Pt h4 1H q 2 1 2 p 4 YKey RVRDLMCWUILSAH UHFFFAOYSA J YInChI 1 4ClH 2K Pt h4 1H q 2 1 2 p 4 rCl4Pt 2K c1 5 2 3 4 q 2 2 1Key RVRDLMCWUILSAH SSOJXQLRAMSMILES K K Cl Pt 2 Cl Cl ClPropertiesChemical formula K2PtCl4Molar mass 415 09 g molAppearance reddish solidDensity 3 38 g cm3Melting point 265 C 509 F 538 K Solubility in water 0 93 g 100 mL 16 C 5 3 100 mL 100 C HazardsGHS labelling PictogramsSignal word DangerHazard statements H301 H315 H317 H318 H334Precautionary statements P261 P264 P270 P272 P280 P285 P301 P310 P302 P352 P304 P341 P305 P351 P338 P310 P321 P330 P332 P313 P333 P313 P342 P311 P362 P363 P405 P501NFPA 704 fire diamond 300Flash point NonflammableRelated compoundsOther anions Potassium hexachloroplatinateOther cations Sodium chloroplatinateExcept where otherwise noted data are given for materials in their standard state at 25 C 77 F 100 kPa N verify what is Y N Infobox referencesPreparation EditPotassium tetrachloroplatinate is prepared by reduction of the corresponding hexachloroplatinate salt with sulfur dioxide 1 K2PtCl4 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 Organic tetrachloroplatinate salts such as PPN 2PtCl4 are soluble in chlorocarbons 2 Reactions EditThe chloride ligands on PtCl4 2 are displaced by many other ligands Upon reaction with triphenylphosphine PtCl4 2 converts to cis bis triphenylphosphine platinum chloride PtCl42 2 PPh3 cis PtCl2 PPh3 2 2 Cl The anti cancer drug Cisplatin can similarly be prepared 1 PtCl42 2 NH3 cis PtCl2 NH3 2 2 Cl Enedithiolates displace all four chloride ligands to give bis dithiolene complexes 3 Reduction gives colloidal platinum of potential interest for catalysis 4 Historically an important reaction involves ammonia and PtCl4 2 This reaction affords a deep green precipitate with empirical formula PtCl2 NH3 2 This material known as Magnus green salt is a semiconducting coordination polymer consisting of chains of alternating PtCl4 2 and Pt NH3 4 2 centres 5 References Edit a b Keller R N Moeller T 1963 Potassium Tetrachloroplatinate II Inorg Synth Inorganic Syntheses Vol 7 pp 247 250 doi 10 1002 9780470132333 ch79 ISBN 9780470132333 Elding L I Oskarsson A Kukushkin V Yu 1997 Platinum Complexes Suitable as Precursors for Synthesis in Nonaqueous Solvents Inorg Synth Inorganic Syntheses Vol 31 pp 276 279 doi 10 1002 9780470132623 ch47 ISBN 9780470132623 Scott D Cummings Richard Eisenberg 1995 Acid Base Behavior of the Ground and Excited States of Platinum II Complexes of Quinoxaline 2 3 dithiolate Inorg Chem 34 13 3396 3403 doi 10 1021 ic00117a005 Ahmadi T S Wang Z L Green T C Henglein A El Sayed M A 1996 Shape Controlled Synthesis of Colloidal Platinum Nanoparticles Science 272 5270 1924 6 Bibcode 1996Sci 272 1924A doi 10 1126 science 272 5270 1924 PMID 8662492 S2CID 34481183 Caseri W 2004 Derivatives of Magnus green salt from intractable materials to solution processed transistors Platinum Metals Review 48 3 91 100 doi 10 1595 147106704X1504 Retrieved from https en wikipedia org w index php title Potassium tetrachloroplatinate amp oldid 1132808656, wikipedia, wiki, book, books, library,
