RbS is alpha boron-derived structured and crystallizes in the hexagonal P-62m space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to two equivalent S(2) and four equivalent S(1) atoms. In the second Rb site, Rb(2) is bonded in a 6-coordinate geometry to two equivalent S(2) and four equivalent S(1) atoms. There are two inequivalent S sites. In the first S site, S(2) is bonded to three equivalent Rb(1), three equivalent Rb(2), and one S(2) atom to form a mixture of distorted face, corner, and edge-sharing SRb6S pentagonal bipyramids. In the second S site, S(1) is bonded to three equivalent Rb(1), three equivalent Rb(2), and one S(1) atom to form a mixture of distorted face, corner, and edge-sharing SRb6S pentagonal bipyramids.
RbS is alpha boron-derived structured and crystallizes in the hexagonal P-62m space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to two equivalent S(2) and four equivalent S(1) atoms. Both Rb(1)-S(2) bond lengths are 3.36 Å. All Rb(1)-S(1) bond lengths are 3.29 Å. In the second Rb site, Rb(2) is bonded in a 6-coordinate geometry to two equivalent S(2) and four equivalent S(1) atoms. Both Rb(2)-S(2) bond lengths are 3.38 Å. All Rb(2)-S(1) bond lengths are 3.48 Å. There are two inequivalent S sites. In the first S site, S(2) is bonded to three equivalent Rb(1), three equivalent Rb(2), and one S(2) atom to form a mixture of distorted face, corner, and edge-sharing SRb6S pentagonal bipyramids. The S(2)-S(2) bond length is 2.11 Å. In the second S site, S(1) is bonded to three equivalent Rb(1), three equivalent Rb(2), and one S(1) atom to form a mixture of distorted face, corner, and edge-sharing SRb6S pentagonal bipyramids. The S(1)-S(1) bond length is 2.13 Å.