K6Mg(SbS4)2 crystallizes in the triclinic P1 space group. There are six inequivalent K sites. In the first K site, K(1) is bonded in a 5-coordinate geometry to one S(1), one S(2), one S(4), one S(6), and one S(8) atom. In the second K site, K(2) is bonded in a 9-coordinate geometry to one Mg(1), one Sb(2), one S(1), one S(2), one S(3), one S(5), one S(6), one S(7), and one S(8) atom. In the third K site, K(3) is bonded in a 6-coordinate geometry to one S(2), one S(3), one S(4), one S(5), one S(6), and one S(8) atom. In the fourth K site, K(4) is bonded in a 5-coordinate geometry to one S(1), one S(3), one S(4), one S(5), and one S(6) atom. In the fifth K site, K(5) is bonded in a 6-coordinate geometry to one S(2), one S(3), one S(4), one S(6), one S(7), and one S(8) atom. In the sixth K site, K(6) is bonded in a 5-coordinate geometry to one S(1), one S(3), one S(4), one S(7), and one S(8) atom. Mg(1) is bonded in a 4-coordinate geometry to one K(2), one Sb(2), one S(1), one S(2), one S(5), and one S(7) atom. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a tetrahedral geometry to one S(2), one S(4), one S(6), and one S(8) atom. In the second Sb site, Sb(2) is bonded in a 6-coordinate geometry to one K(2), one Mg(1), one S(1), one S(3), one S(5), and one S(7) atom. There are eight inequivalent S sites. In the first S site, S(1) is bonded in a distorted pentagonal pyramidal geometry to one K(1), one K(2), one K(4), one K(6), one Mg(1), and one Sb(2) atom. In the second S site, S(2) is bonded in a 6-coordinate geometry to one K(1), one K(2), one K(3), one K(5), one Mg(1), and one Sb(1) atom. In the third S site, S(3) is bonded in a 6-coordinate geometry to one K(2), one K(3), one K(4), one K(5), one K(6), and one Sb(2) atom. In the fourth S site, S(4) is bonded in a 6-coordinate geometry to one K(1), one K(3), one K(4), one K(5), one K(6), and one Sb(1) atom. In the fifth S site, S(5) is bonded in a 3-coordinate geometry to one K(2), one K(3), one K(4), one Mg(1), and one Sb(2) atom. In the sixth S site, S(6) is bonded in a 6-coordinate geometry to one K(1), one K(2), one K(3), one K(4), one K(5), and one Sb(1) atom. In the seventh S site, S(7) is bonded in a 3-coordinate geometry to one K(2), one K(5), one K(6), one Mg(1), and one Sb(2) atom. In the eighth S site, S(8) is bonded in a 6-coordinate geometry to one K(1), one K(2), one K(3), one K(5), one K(6), and one Sb(1) atom.
K6Mg(SbS4)2 crystallizes in the triclinic P1 space group. There are six inequivalent K sites. In the first K site, K(1) is bonded in a 5-coordinate geometry to one S(1), one S(2), one S(4), one S(6), and one S(8) atom. The K(1)-S(1) bond length is 3.21 Å. The K(1)-S(2) bond length is 3.68 Å. The K(1)-S(4) bond length is 3.52 Å. The K(1)-S(6) bond length is 3.52 Å. The K(1)-S(8) bond length is 3.53 Å. In the second K site, K(2) is bonded in a 9-coordinate geometry to one Mg(1), one Sb(2), one S(1), one S(2), one S(3), one S(5), one S(6), one S(7), and one S(8) atom. The K(2)-Mg(1) bond length is 3.27 Å. The K(2)-Sb(2) bond length is 3.43 Å. The K(2)-S(1) bond length is 3.26 Å. The K(2)-S(2) bond length is 3.25 Å. The K(2)-S(3) bond length is 3.47 Å. The K(2)-S(5) bond length is 3.66 Å. The K(2)-S(6) bond length is 3.52 Å. The K(2)-S(7) bond length is 3.69 Å. The K(2)-S(8) bond length is 3.54 Å. In the third K site, K(3) is bonded in a 6-coordinate geometry to one S(2), one S(3), one S(4), one S(5), one S(6), and one S(8) atom. The K(3)-S(2) bond length is 3.17 Å. The K(3)-S(3) bond length is 3.27 Å. The K(3)-S(4) bond length is 3.30 Å. The K(3)-S(5) bond length is 3.77 Å. The K(3)-S(6) bond length is 3.44 Å. The K(3)-S(8) bond length is 3.47 Å. In the fourth K site, K(4) is bonded in a 5-coordinate geometry to one S(1), one S(3), one S(4), one S(5), and one S(6) atom. The K(4)-S(1) bond length is 3.24 Å. The K(4)-S(3) bond length is 3.11 Å. The K(4)-S(4) bond length is 3.33 Å. The K(4)-S(5) bond length is 3.23 Å. The K(4)-S(6) bond length is 3.34 Å. In the fifth K site, K(5) is bonded in a 6-coordinate geometry to one S(2), one S(3), one S(4), one S(6), one S(7), and one S(8) atom. The K(5)-S(2) bond length is 3.17 Å. The K(5)-S(3) bond length is 3.27 Å. The K(5)-S(4) bond length is 3.30 Å. The K(5)-S(6) bond length is 3.48 Å. The K(5)-S(7) bond length is 3.78 Å. The K(5)-S(8) bond length is 3.43 Å. In the sixth K site, K(6) is bonded in a 5-coordinate geometry to one S(1), one S(3), one S(4), one S(7), and one S(8) atom. The K(6)-S(1) bond length is 3.24 Å. The K(6)-S(3) bond length is 3.11 Å. The K(6)-S(4) bond length is 3.34 Å. The K(6)-S(7) bond length is 3.23 Å. The K(6)-S(8) bond length is 3.32 Å. Mg(1) is bonded in a 4-coordinate geometry to one K(2), one Sb(2), one S(1), one S(2), one S(5), and one S(7) atom. The Mg(1)-Sb(2) bond length is 2.84 Å. The Mg(1)-S(1) bond length is 2.43 Å. The Mg(1)-S(2) bond length is 2.33 Å. The Mg(1)-S(5) bond length is 2.65 Å. The Mg(1)-S(7) bond length is 2.64 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a tetrahedral geometry to one S(2), one S(4), one S(6), and one S(8) atom. The Sb(1)-S(2) bond length is 2.87 Å. The Sb(1)-S(4) bond length is 2.46 Å. The Sb(1)-S(6) bond length is 2.42 Å. The Sb(1)-S(8) bond length is 2.42 Å. In the second Sb site, Sb(2) is bonded in a 6-coordinate geometry to one K(2), one Mg(1), one S(1), one S(3), one S(5), and one S(7) atom. The Sb(2)-S(1) bond length is 2.73 Å. The Sb(2)-S(3) bond length is 2.47 Å. The Sb(2)-S(5) bond length is 2.46 Å. The Sb(2)-S(7) bond length is 2.46 Å. There are eight inequivalent S sites. In the first S site, S(1) is bonded in a distorted pentagonal pyramidal geometry to one K(1), one K(2), one K(4), one K(6), one Mg(1), and one Sb(2) atom. In the second S site, S(2) is bonded in a 6-coordinate geometry to one K(1), one K(2), one K(3), one K(5), one Mg(1), and one Sb(1) atom. In the third S site, S(3) is bonded in a 6-coordinate geometry to one K(2), one K(3), one K(4), one K(5), one K(6), and one Sb(2) atom. In the fourth S site, S(4) is bonded in a 6-coordinate geometry to one K(1), one K(3), one K(4), one K(5), one K(6), and one Sb(1) atom. In the fifth S site, S(5) is bonded in a 3-coordinate geometry to one K(2), one K(3), one K(4), one Mg(1), and one Sb(2) atom. In the sixth S site, S(6) is bonded in a 6-coordinate geometry to one K(1), one K(2), one K(3), one K(4), one K(5), and one Sb(1) atom. In the seventh S site, S(7) is bonded in a 3-coordinate geometry to one K(2), one K(5), one K(6), one Mg(1), and one Sb(2) atom. In the eighth S site, S(8) is bonded in a 6-coordinate geometry to one K(1), one K(2), one K(3), one K(5), one K(6), and one Sb(1) atom.