Rb2Co3S4 crystallizes in the orthorhombic Ibam space group. Rb(1) is bonded in a body-centered cubic geometry to eight equivalent S(1) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to four equivalent S(1) atoms to form a mixture of corner and edge-sharing CoS4 tetrahedra. In the second Co site, Co(2) is bonded to four equivalent S(1) atoms to form a mixture of corner and edge-sharing CoS4 tetrahedra. S(1) is bonded in a 7-coordinate geometry to four equivalent Rb(1), one Co(1), and two equivalent Co(2) atoms.
Rb2Co3S4 crystallizes in the orthorhombic Ibam space group. Rb(1) is bonded in a body-centered cubic geometry to eight equivalent S(1) atoms. There are a spread of Rb(1)-S(1) bond distances ranging from 3.39-3.47 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to four equivalent S(1) atoms to form a mixture of corner and edge-sharing CoS4 tetrahedra. All Co(1)-S(1) bond lengths are 2.20 Å. In the second Co site, Co(2) is bonded to four equivalent S(1) atoms to form a mixture of corner and edge-sharing CoS4 tetrahedra. There are two shorter (2.18 Å) and two longer (2.22 Å) Co(2)-S(1) bond lengths. S(1) is bonded in a 7-coordinate geometry to four equivalent Rb(1), one Co(1), and two equivalent Co(2) atoms.