Ir3S8 crystallizes in the trigonal R-3 space group. Ir(1) is bonded to two equivalent S(2) and four equivalent S(1) atoms to form corner-sharing IrS6 octahedra. The corner-sharing octahedral tilt angles range from 63-64°. There are two inequivalent S sites. In the first S site, S(1) is bonded in a trigonal non-coplanar geometry to two equivalent Ir(1) and one S(1) atom. In the second S site, S(2) is bonded in a 4-coordinate geometry to three equivalent Ir(1) and one S(2) atom.
Ir3S8 crystallizes in the trigonal R-3 space group. Ir(1) is bonded to two equivalent S(2) and four equivalent S(1) atoms to form corner-sharing IrS6 octahedra. The corner-sharing octahedral tilt angles range from 63-64°. Both Ir(1)-S(2) bond lengths are 2.34 Å. There are two shorter (2.38 Å) and two longer (2.40 Å) Ir(1)-S(1) bond lengths. There are two inequivalent S sites. In the first S site, S(1) is bonded in a trigonal non-coplanar geometry to two equivalent Ir(1) and one S(1) atom. The S(1)-S(1) bond length is 2.12 Å. In the second S site, S(2) is bonded in a 4-coordinate geometry to three equivalent Ir(1) and one S(2) atom. The S(2)-S(2) bond length is 2.55 Å.