Mg(CrS2)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one S(1), one S(2), one S(6), and one S(7) atom. There are four inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one S(1), one S(3), one S(4), one S(6), and one S(8) atom to form distorted edge-sharing CrS5 trigonal bipyramids. In the second Cr site, Cr(2) is bonded to one S(2), one S(3), one S(5), one S(7), and one S(8) atom to form distorted edge-sharing CrS5 trigonal bipyramids. In the third Cr site, Cr(3) is bonded to one S(1), one S(3), one S(4), one S(5), and one S(6) atom to form distorted edge-sharing CrS5 trigonal bipyramids. In the fourth Cr site, Cr(4) is bonded to one S(2), one S(4), one S(5), one S(7), and one S(8) atom to form distorted edge-sharing CrS5 trigonal bipyramids. There are eight inequivalent S sites. In the first S site, S(1) is bonded in a 3-coordinate geometry to one Mg(1), one Cr(1), and one Cr(3) atom. In the second S site, S(2) is bonded in a distorted T-shaped geometry to one Mg(1), one Cr(2), and one Cr(4) atom. In the third S site, S(3) is bonded in a distorted T-shaped geometry to one Cr(1), one Cr(2), and one Cr(3) atom. In the fourth S site, S(4) is bonded in a distorted T-shaped geometry to one Cr(1), one Cr(3), and one Cr(4) atom. In the fifth S site, S(5) is bonded in a distorted T-shaped geometry to one Cr(2), one Cr(3), and one Cr(4) atom. In the sixth S site, S(6) is bonded in a distorted T-shaped geometry to one Mg(1), one Cr(1), and one Cr(3) atom. In the seventh S site, S(7) is bonded in a distorted T-shaped geometry to one Mg(1), one Cr(2), and one Cr(4) atom. In the eighth S site, S(8) is bonded in a distorted T-shaped geometry to one Cr(1), one Cr(2), and one Cr(4) atom.
Mg(CrS2)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one S(1), one S(2), one S(6), and one S(7) atom. The Mg(1)-S(1) bond length is 2.47 Å. The Mg(1)-S(2) bond length is 2.47 Å. The Mg(1)-S(6) bond length is 2.49 Å. The Mg(1)-S(7) bond length is 2.48 Å. There are four inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one S(1), one S(3), one S(4), one S(6), and one S(8) atom to form distorted edge-sharing CrS5 trigonal bipyramids. The Cr(1)-S(1) bond length is 2.31 Å. The Cr(1)-S(3) bond length is 2.35 Å. The Cr(1)-S(4) bond length is 2.37 Å. The Cr(1)-S(6) bond length is 2.31 Å. The Cr(1)-S(8) bond length is 2.22 Å. In the second Cr site, Cr(2) is bonded to one S(2), one S(3), one S(5), one S(7), and one S(8) atom to form distorted edge-sharing CrS5 trigonal bipyramids. The Cr(2)-S(2) bond length is 2.33 Å. The Cr(2)-S(3) bond length is 2.22 Å. The Cr(2)-S(5) bond length is 2.38 Å. The Cr(2)-S(7) bond length is 2.33 Å. The Cr(2)-S(8) bond length is 2.34 Å. In the third Cr site, Cr(3) is bonded to one S(1), one S(3), one S(4), one S(5), and one S(6) atom to form distorted edge-sharing CrS5 trigonal bipyramids. The Cr(3)-S(1) bond length is 2.31 Å. The Cr(3)-S(3) bond length is 2.33 Å. The Cr(3)-S(4) bond length is 2.33 Å. The Cr(3)-S(5) bond length is 2.19 Å. The Cr(3)-S(6) bond length is 2.30 Å. In the fourth Cr site, Cr(4) is bonded to one S(2), one S(4), one S(5), one S(7), and one S(8) atom to form distorted edge-sharing CrS5 trigonal bipyramids. The Cr(4)-S(2) bond length is 2.33 Å. The Cr(4)-S(4) bond length is 2.19 Å. The Cr(4)-S(5) bond length is 2.34 Å. The Cr(4)-S(7) bond length is 2.31 Å. The Cr(4)-S(8) bond length is 2.34 Å. There are eight inequivalent S sites. In the first S site, S(1) is bonded in a 3-coordinate geometry to one Mg(1), one Cr(1), and one Cr(3) atom. In the second S site, S(2) is bonded in a distorted T-shaped geometry to one Mg(1), one Cr(2), and one Cr(4) atom. In the third S site, S(3) is bonded in a distorted T-shaped geometry to one Cr(1), one Cr(2), and one Cr(3) atom. In the fourth S site, S(4) is bonded in a distorted T-shaped geometry to one Cr(1), one Cr(3), and one Cr(4) atom. In the fifth S site, S(5) is bonded in a distorted T-shaped geometry to one Cr(2), one Cr(3), and one Cr(4) atom. In the sixth S site, S(6) is bonded in a distorted T-shaped geometry to one Mg(1), one Cr(1), and one Cr(3) atom. In the seventh S site, S(7) is bonded in a distorted T-shaped geometry to one Mg(1), one Cr(2), and one Cr(4) atom. In the eighth S site, S(8) is bonded in a distorted T-shaped geometry to one Cr(1), one Cr(2), and one Cr(4) atom.