presence of heavy iodine atoms and the well-calibrated chemical pathways, triiodide has also become a computational benchmark system for relativistic quantum chemistry. Electrochemistry The redox reactions of triiodide and iodide has been proposed as critical steps in dye-sensitized solar cells. and rechargeable batteries. See also Polyiodide Tribromide Polyhalogen ions Three-center four-electron bond Iodine–starch test Iodometry Povidone-iodine Lugol's iodine Dye-sensitized solar cell Organic superconductor References External links Kinetic study of the iodine–persulfate reaction Anions Iodides Hypervalent molecules Homonuclear triatomic molecules Polyhalides pl:Trójjodki