Rb2S is Fluorite structured and crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to four equivalent S(1) atoms to form a mixture of corner and edge-sharing RbS4 tetrahedra. S(1) is bonded in a body-centered cubic geometry to eight equivalent Rb(1) atoms.
Rb2S is Fluorite structured and crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to four equivalent S(1) atoms to form a mixture of corner and edge-sharing RbS4 tetrahedra. All Rb(1)-S(1) bond lengths are 3.37 Å. S(1) is bonded in a body-centered cubic geometry to eight equivalent Rb(1) atoms.