Chemical reactions of the elements Reaction of platinum with airPlatinum metal does not normally react with air or oxygen. Reaction of platinum with waterReaction of platinum with the halogensCareful control of the reaction between platinum metal and fluorine gas, F2, results in either the volatile platinum(VI) fluoride, PtF6 or the tetrameric platinum(V) fluoride, (PtF5)4. The latter posseses the same type of structure as (IrF5)4, (RhF5)4, (OsF5)4, and (RuF5)4, and disproportionates into platinum(VI) fluoride and platinum(IV) fluoride, PtF4. Pt(s) + 3F2(g) → PtF6(s) [dark red] 4Pt(s) + 10F2(g) → (PtF5)4(s) [deep red] (PtF5)4(s) → PtF6(s) + PtF4(s) [yellow brown] The tetrachloride, PtCl4, tetrabromide, PtBr4, and tetraiodide, PtI4, are formed in the reactions of platinum metal and chlorine, Cl2, bromine, Br2, or iodine, I2. Pt(s) + 2Cl2(g) → PtCl4(s) [red brown] Pt(s) + 2Br2(g) → PtBr4(s) [brown black] Pt(s) + 2I2(g) → PtI4(s) [brown black] The dichloride, platinum(II) chloride, PtCl2, is also formed in the controlled reaction of platinum metal and chlorine, Cl2. Depending upon the reaction conditions, one of two different forms of PtCl2 is formed. Pt(s) + Cl2(g) → PtCl2(s) [dark red or olive green] Reaction of platinum with acidsReaction of platinum with basesWebElements ShopWebElements now has an online shop at which you can buy periodic table posters, mugs, T-shirts, games, molecular models, and more.
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