Rb4MgMo2(SO)4 crystallizes in the triclinic P1 space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 5-coordinate geometry to one S(4), two equivalent S(2), one O(1), and one O(3) atom. In the second Rb site, Rb(2) is bonded in a 1-coordinate geometry to one S(2), two equivalent S(1), two equivalent S(3), and one O(4) atom. In the third Rb site, Rb(3) is bonded in a 5-coordinate geometry to one S(3), one S(4), one O(1), one O(3), and one O(4) atom. In the fourth Rb site, Rb(4) is bonded in a 6-coordinate geometry to two equivalent S(1), two equivalent S(3), one O(2), and one O(3) atom. Mg(1) is bonded in a 2-coordinate geometry to one S(1), one S(2), one S(4), one O(1), and one O(2) atom. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 2-coordinate geometry to one S(1), one S(2), one S(4), one O(1), and one O(2) atom. In the second Mo site, Mo(2) is bonded in a distorted tetrahedral geometry to one S(3), one S(4), one O(3), and one O(4) atom. There are four inequivalent S sites. In the first S site, S(1) is bonded in a 6-coordinate geometry to two equivalent Rb(2), two equivalent Rb(4), one Mg(1), and one Mo(1) atom. In the second S site, S(2) is bonded in a 5-coordinate geometry to one Rb(2), two equivalent Rb(1), one Mg(1), and one Mo(1) atom. In the third S site, S(3) is bonded in a 6-coordinate geometry to one Rb(3), two equivalent Rb(2), two equivalent Rb(4), and one Mo(2) atom. In the fourth S site, S(4) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(3), one Mg(1), one Mo(1), and one Mo(2) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(3), one Mg(1), and one Mo(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Rb(4), one Mg(1), and one Mo(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(3), one Rb(4), and one Mo(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Rb(2), one Rb(3), and one Mo(2) atom.
Rb4MgMo2(SO)4 crystallizes in the triclinic P1 space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 5-coordinate geometry to one S(4), two equivalent S(2), one O(1), and one O(3) atom. The Rb(1)-S(4) bond length is 3.44 Å. There is one shorter (3.32 Å) and one longer (3.44 Å) Rb(1)-S(2) bond length. The Rb(1)-O(1) bond length is 2.90 Å. The Rb(1)-O(3) bond length is 2.76 Å. In the second Rb site, Rb(2) is bonded in a 1-coordinate geometry to one S(2), two equivalent S(1), two equivalent S(3), and one O(4) atom. The Rb(2)-S(2) bond length is 3.56 Å. There is one shorter (3.49 Å) and one longer (3.50 Å) Rb(2)-S(1) bond length. There is one shorter (3.42 Å) and one longer (3.47 Å) Rb(2)-S(3) bond length. The Rb(2)-O(4) bond length is 2.86 Å. In the third Rb site, Rb(3) is bonded in a 5-coordinate geometry to one S(3), one S(4), one O(1), one O(3), and one O(4) atom. The Rb(3)-S(3) bond length is 3.43 Å. The Rb(3)-S(4) bond length is 3.42 Å. The Rb(3)-O(1) bond length is 3.17 Å. The Rb(3)-O(3) bond length is 3.05 Å. The Rb(3)-O(4) bond length is 2.78 Å. In the fourth Rb site, Rb(4) is bonded in a 6-coordinate geometry to two equivalent S(1), two equivalent S(3), one O(2), and one O(3) atom. Both Rb(4)-S(1) bond lengths are 3.39 Å. There is one shorter (3.46 Å) and one longer (3.55 Å) Rb(4)-S(3) bond length. The Rb(4)-O(2) bond length is 2.84 Å. The Rb(4)-O(3) bond length is 2.86 Å. Mg(1) is bonded in a 2-coordinate geometry to one S(1), one S(2), one S(4), one O(1), and one O(2) atom. The Mg(1)-S(1) bond length is 3.02 Å. The Mg(1)-S(2) bond length is 2.64 Å. The Mg(1)-S(4) bond length is 2.51 Å. The Mg(1)-O(1) bond length is 2.06 Å. The Mg(1)-O(2) bond length is 1.96 Å. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a 2-coordinate geometry to one S(1), one S(2), one S(4), one O(1), and one O(2) atom. The Mo(1)-S(1) bond length is 2.33 Å. The Mo(1)-S(2) bond length is 2.34 Å. The Mo(1)-S(4) bond length is 2.89 Å. The Mo(1)-O(1) bond length is 1.87 Å. The Mo(1)-O(2) bond length is 1.86 Å. In the second Mo site, Mo(2) is bonded in a distorted tetrahedral geometry to one S(3), one S(4), one O(3), and one O(4) atom. The Mo(2)-S(3) bond length is 2.33 Å. The Mo(2)-S(4) bond length is 2.41 Å. The Mo(2)-O(3) bond length is 1.81 Å. The Mo(2)-O(4) bond length is 1.78 Å. There are four inequivalent S sites. In the first S site, S(1) is bonded in a 6-coordinate geometry to two equivalent Rb(2), two equivalent Rb(4), one Mg(1), and one Mo(1) atom. In the second S site, S(2) is bonded in a 5-coordinate geometry to one Rb(2), two equivalent Rb(1), one Mg(1), and one Mo(1) atom. In the third S site, S(3) is bonded in a 6-coordinate geometry to one Rb(3), two equivalent Rb(2), two equivalent Rb(4), and one Mo(2) atom. In the fourth S site, S(4) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(3), one Mg(1), one Mo(1), and one Mo(2) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(3), one Mg(1), and one Mo(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Rb(4), one Mg(1), and one Mo(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(3), one Rb(4), and one Mo(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Rb(2), one Rb(3), and one Mo(2) atom.