Potassium tetraiodoplatinate is the inorganic compound with the formula K2PtI4·(H2O)2. It is the potassium salt of tetraiodoplatinate, a square planar complex of platinum(II). The compound crystallizes from water as the dihydrate,[1] whereas the related chloride and bromide K2PtCl4 and K2PtBr4 are obtained only as the anhydrous salts.
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3D model (JSmol)
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PubChem CID
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| H4I4K2O2Pt | |
| Molar mass | 816.928 g·mol−1 |
| Appearance | black solid |
| Density | 4.31 g/cm3[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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It reacts with amines and with ammonia to give charge-neutral derivatives PtI2(RNH2)2.[2] The compound is prepared by the salt metathesis reaction of potassium iodide and potassium tetrachloroplatinate:[3]
- K2PtCl4 + 4 KI → K2PtI4 + 4 KCl
Potassium tetraiodoplatinate is a precursor to the anticancer drug cisplatin.
References
edit- ^ a b Olsson, Lars-Fride; Oskarsson, Åke; Larsen, Sine; Teuber, Lene; Lucanska, Brigitta; Krätsmar-Smogrovic, Juraj; Valent, Aladár; Alminger, Tomas; Erickson, Magnus; Grundevik, Inger; Hagin, Inger; Hoffman, Kurt-Jürgen; Johansson, Svante; Larsson, Sam; Löfberg, Ingalil; Ohlson, Kristina; Persson, Björn; Skånberg, Inger; Tekenbergs-Hjelte, Lija (1989). "The Crystal Structure of Potassium Tetraiodoplatinate(II) Dihydrate". Acta Chemica Scandinavica. 43: 811–812. doi:10.3891/acta.chem.scand.43-0811.
- ^ Rochon, Fernande D.; Buculei, Viorel (2004). "Multinuclear NMR Study and Crystal Structures of Complexes of the Types cis- and trans-Pt(amine)2I2". Inorganica Chimica Acta. 357 (8): 2218–2230. doi:10.1016/j.ica.2003.10.039.
- ^ Olsson, Lars-Fride (1989). "Dipotassium Tetraiodoplatinate(II) Dihydrate". Inorganic Syntheses. Vol. 25. pp. 98–100. doi:10.1002/9780470132562.ch21. ISBN 978-0-471-61874-4.