In the title compound, trans-dichloro(1,5,9,13-tetrathiacyclohexadecane-kappa(4)S)rhodium(III) pentaiodide diiodine, [RhCl2(C12H24S4)](I-5). I-2, the complex cations are embedded in a three;dimensional polyiodide matrix composed of cages of Is ions and It molecules interacting via I ... I contacts which range from 3.336(2) to 4.133 (2) Angstrom.