PtCl42

PtCl42 is not a recognized chemical formula. It is possible there is a typo in the formula. A common and stable platinum complex is tetrachloroplatinate(II), which has the chemical formula [PtCl4]2-. This is an anion consisting of a central platinum atom in the +2 oxidation state coordinated to four chloride ligands. The tetrachloroplatinate(II) anion adopts a square planar geometry around the platinum ion. It is typically found as a salt with various cations, such as potassium (K2[PtCl4]) or ammonium ((NH4)2[PtCl4]). These salts are often yellow or orange crystalline solids. Tetrachloroplatinate(II) is an important intermediate in the synthesis of other platinum compounds, including anticancer drugs like cisplatin. It is also used in electroplating and as a catalyst.