Tin(IV) iodate is an inorganic compound with the chemical formula Sn(IO3)4. It was first obtained in 2020 through the hydrothermal reaction of tin(II) oxide and iodic acid in water at 220 °C. It is a colorless columnar crystal, crystallized in the triclinic P space group. It has an indirect band gap (experimental 4.0 eV; calculated 2.75 eV).

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