Platinum(IV) iodide is primarily used in specialized chemical synthesis and catalysis. It serves as a precursor in the preparation of other platinum compounds, which are often employed in organic reactions and industrial processes. Its role in catalysis is significant, particularly in reactions where platinum's properties enhance efficiency or selectivity. Additionally, it finds applications in materials science, where it contributes to the development of advanced materials with specific electronic or structural properties. In research, it is utilized to study platinum chemistry and its interactions with other elements.