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Direct interaction of platinum metal with gaseous chlorine at elevated temperature (>250ᵒC) results in the formation of reddish brown Platinum tetrachloride, PtCl4. When subjected to thermal decomposition at still higher temperature (>700ᵒC), it produces black precipitate of platinum (II) chloride, PtCl2. Some of its better known tetravalent complexes also produce PtCl2 upon thermal degradation. The bivalent chloride is an important precursor to a series of biologically important compounds and anticancer drugs.
So, products of this synthesis reaction depend upon the temperature employed. Assuming no additional thermal decomposition, the product of this synthesis reaction will be reddish brown Platinum (IV) chloride, PtCl4.
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