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Potassium hexachloroplatinate
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<p>Potassium hexachloroplatinate is the <a href="/facts/Inorganic_compound/TfFfzxSz">inorganic compound</a> with the formula K2PtCl6. It is a yellow solid that is a comparatively insoluble potassium salt. The salt features the <a href="/facts/Hexachloroplatinate/9zfMSL4N">hexachloroplatinate</a>(IV) dianion, which has <a href="/facts/Octahedral_coordination_geometry/bNXLVvks">octahedral coordination geometry</a>. </p><p>The precipitation of this compound from solutions of <a href="/facts/Hexachloroplatinic_acid/3F3cuA1b">hexachloroplatinic acid</a> was formerly used for the determination of potassium by <a href="/facts/Gravimetric_analysis/FtMjzQly">gravimetric analysis</a>. It is also useful as an intermediate in the recovery of platinum from wastes. </p>