Rb2K2Re6S13 crystallizes in the monoclinic C2/c space group. Rb(1) is bonded in a 1-coordinate geometry to one S(2), one S(3), two equivalent S(1), two equivalent S(6), and two equivalent S(7) atoms. K(1) is bonded in a 6-coordinate geometry to one S(1), one S(2), one S(3), one S(4), one S(5), and one S(7) atom. There are three inequivalent Re sites. In the first Re site, Re(1) is bonded to one S(1), one S(2), one S(4), one S(5), and one S(6) atom to form distorted edge-sharing ReS5 square pyramids. In the second Re site, Re(2) is bonded to one S(1), one S(2), one S(4), one S(6), and one S(7) atom to form edge-sharing ReS5 square pyramids. In the third Re site, Re(3) is bonded to one S(1), one S(2), one S(3), one S(4), and one S(6) atom to form a mixture of corner and edge-sharing ReS5 square pyramids. There are seven inequivalent S sites. In the first S site, S(1) is bonded in a 6-coordinate geometry to two equivalent Rb(1), one K(1), one Re(1), one Re(2), and one Re(3) atom. In the second S site, S(2) is bonded in a 5-coordinate geometry to one Rb(1), one K(1), one Re(1), one Re(2), and one Re(3) atom. In the third S site, S(3) is bonded in a 6-coordinate geometry to two equivalent Rb(1), two equivalent K(1), and two equivalent Re(3) atoms. In the fourth S site, S(4) is bonded in a 4-coordinate geometry to one K(1), one Re(1), one Re(2), and one Re(3) atom. In the fifth S site, S(5) is bonded in a 3-coordinate geometry to one K(1), one Re(1), and one S(5) atom. In the sixth S site, S(6) is bonded in a 5-coordinate geometry to two equivalent Rb(1), one Re(1), one Re(2), and one Re(3) atom. In the seventh S site, S(7) is bonded in a 5-coordinate geometry to two equivalent Rb(1), one K(1), one Re(2), and one S(7) atom.
Rb2K2Re6S13 crystallizes in the monoclinic C2/c space group. Rb(1) is bonded in a 1-coordinate geometry to one S(2), one S(3), two equivalent S(1), two equivalent S(6), and two equivalent S(7) atoms. The Rb(1)-S(2) bond length is 3.75 Å. The Rb(1)-S(3) bond length is 3.75 Å. There is one shorter (3.58 Å) and one longer (3.81 Å) Rb(1)-S(1) bond length. There is one shorter (3.16 Å) and one longer (3.55 Å) Rb(1)-S(6) bond length. There is one shorter (3.50 Å) and one longer (3.75 Å) Rb(1)-S(7) bond length. K(1) is bonded in a 6-coordinate geometry to one S(1), one S(2), one S(3), one S(4), one S(5), and one S(7) atom. The K(1)-S(1) bond length is 3.30 Å. The K(1)-S(2) bond length is 3.51 Å. The K(1)-S(3) bond length is 3.24 Å. The K(1)-S(4) bond length is 3.23 Å. The K(1)-S(5) bond length is 3.11 Å. The K(1)-S(7) bond length is 3.25 Å. There are three inequivalent Re sites. In the first Re site, Re(1) is bonded to one S(1), one S(2), one S(4), one S(5), and one S(6) atom to form distorted edge-sharing ReS5 square pyramids. The Re(1)-S(1) bond length is 2.43 Å. The Re(1)-S(2) bond length is 2.45 Å. The Re(1)-S(4) bond length is 2.42 Å. The Re(1)-S(5) bond length is 2.44 Å. The Re(1)-S(6) bond length is 2.43 Å. In the second Re site, Re(2) is bonded to one S(1), one S(2), one S(4), one S(6), and one S(7) atom to form edge-sharing ReS5 square pyramids. The Re(2)-S(1) bond length is 2.43 Å. The Re(2)-S(2) bond length is 2.44 Å. The Re(2)-S(4) bond length is 2.42 Å. The Re(2)-S(6) bond length is 2.41 Å. The Re(2)-S(7) bond length is 2.50 Å. In the third Re site, Re(3) is bonded to one S(1), one S(2), one S(3), one S(4), and one S(6) atom to form a mixture of corner and edge-sharing ReS5 square pyramids. The Re(3)-S(1) bond length is 2.44 Å. The Re(3)-S(2) bond length is 2.44 Å. The Re(3)-S(3) bond length is 2.49 Å. The Re(3)-S(4) bond length is 2.41 Å. The Re(3)-S(6) bond length is 2.42 Å. There are seven inequivalent S sites. In the first S site, S(1) is bonded in a 6-coordinate geometry to two equivalent Rb(1), one K(1), one Re(1), one Re(2), and one Re(3) atom. In the second S site, S(2) is bonded in a 5-coordinate geometry to one Rb(1), one K(1), one Re(1), one Re(2), and one Re(3) atom. In the third S site, S(3) is bonded in a 6-coordinate geometry to two equivalent Rb(1), two equivalent K(1), and two equivalent Re(3) atoms. In the fourth S site, S(4) is bonded in a 4-coordinate geometry to one K(1), one Re(1), one Re(2), and one Re(3) atom. In the fifth S site, S(5) is bonded in a 3-coordinate geometry to one K(1), one Re(1), and one S(5) atom. The S(5)-S(5) bond length is 2.11 Å. In the sixth S site, S(6) is bonded in a 5-coordinate geometry to two equivalent Rb(1), one Re(1), one Re(2), and one Re(3) atom. In the seventh S site, S(7) is bonded in a 5-coordinate geometry to two equivalent Rb(1), one K(1), one Re(2), and one S(7) atom. The S(7)-S(7) bond length is 2.13 Å.