MgNi4(SbS)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 11-coordinate geometry to one Ni(1), one Ni(2), one Ni(3), one Ni(4), one Sb(1), one Sb(2), one Sb(3), one Sb(4), one S(1), one S(2), and one S(4) atom. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 6-coordinate geometry to one Mg(1), one Sb(2), one Sb(3), one Sb(4), one S(3), and one S(4) atom. In the second Ni site, Ni(2) is bonded in a 6-coordinate geometry to one Mg(1), one Sb(1), one Sb(3), one Sb(4), one S(1), and one S(3) atom. In the third Ni site, Ni(3) is bonded in a 7-coordinate geometry to one Mg(1), one Sb(1), one Sb(2), one Sb(4), one S(1), one S(2), and one S(4) atom. In the fourth Ni site, Ni(4) is bonded in a 6-coordinate geometry to one Mg(1), one Sb(1), one Sb(2), one Sb(3), one S(2), and one S(3) atom. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 5-coordinate geometry to one Mg(1), one Ni(2), one Ni(3), one Ni(4), and one S(1) atom. In the second Sb site, Sb(2) is bonded in a 5-coordinate geometry to one Mg(1), one Ni(1), one Ni(3), one Ni(4), and one S(2) atom. In the third Sb site, Sb(3) is bonded in a 5-coordinate geometry to one Mg(1), one Ni(1), one Ni(2), one Ni(4), and one S(3) atom. In the fourth Sb site, Sb(4) is bonded in a 5-coordinate geometry to one Mg(1), one Ni(1), one Ni(2), one Ni(3), and one S(4) atom. There are four inequivalent S sites. In the first S site, S(1) is bonded in a 4-coordinate geometry to one Mg(1), one Ni(2), one Ni(3), and one Sb(1) atom. In the second S site, S(2) is bonded in a 4-coordinate geometry to one Mg(1), one Ni(3), one Ni(4), and one Sb(2) atom. In the third S site, S(3) is bonded in a distorted tetrahedral geometry to one Ni(1), one Ni(2), one Ni(4), and one Sb(3) atom. In the fourth S site, S(4) is bonded in a 4-coordinate geometry to one Mg(1), one Ni(1), one Ni(3), and one Sb(4) atom.
MgNi4(SbS)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 11-coordinate geometry to one Ni(1), one Ni(2), one Ni(3), one Ni(4), one Sb(1), one Sb(2), one Sb(3), one Sb(4), one S(1), one S(2), and one S(4) atom. The Mg(1)-Ni(1) bond length is 3.10 Å. The Mg(1)-Ni(2) bond length is 3.14 Å. The Mg(1)-Ni(3) bond length is 2.69 Å. The Mg(1)-Ni(4) bond length is 3.08 Å. The Mg(1)-Sb(1) bond length is 3.06 Å. The Mg(1)-Sb(2) bond length is 3.04 Å. The Mg(1)-Sb(3) bond length is 2.73 Å. The Mg(1)-Sb(4) bond length is 3.04 Å. The Mg(1)-S(1) bond length is 2.48 Å. The Mg(1)-S(2) bond length is 2.48 Å. The Mg(1)-S(4) bond length is 2.48 Å. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 6-coordinate geometry to one Mg(1), one Sb(2), one Sb(3), one Sb(4), one S(3), and one S(4) atom. The Ni(1)-Sb(2) bond length is 2.54 Å. The Ni(1)-Sb(3) bond length is 2.62 Å. The Ni(1)-Sb(4) bond length is 2.65 Å. The Ni(1)-S(3) bond length is 2.34 Å. The Ni(1)-S(4) bond length is 2.24 Å. In the second Ni site, Ni(2) is bonded in a 6-coordinate geometry to one Mg(1), one Sb(1), one Sb(3), one Sb(4), one S(1), and one S(3) atom. The Ni(2)-Sb(1) bond length is 2.66 Å. The Ni(2)-Sb(3) bond length is 2.62 Å. The Ni(2)-Sb(4) bond length is 2.55 Å. The Ni(2)-S(1) bond length is 2.24 Å. The Ni(2)-S(3) bond length is 2.33 Å. In the third Ni site, Ni(3) is bonded in a 7-coordinate geometry to one Mg(1), one Sb(1), one Sb(2), one Sb(4), one S(1), one S(2), and one S(4) atom. The Ni(3)-Sb(1) bond length is 2.57 Å. The Ni(3)-Sb(2) bond length is 2.56 Å. The Ni(3)-Sb(4) bond length is 2.56 Å. The Ni(3)-S(1) bond length is 2.35 Å. The Ni(3)-S(2) bond length is 2.34 Å. The Ni(3)-S(4) bond length is 2.34 Å. In the fourth Ni site, Ni(4) is bonded in a 6-coordinate geometry to one Mg(1), one Sb(1), one Sb(2), one Sb(3), one S(2), and one S(3) atom. The Ni(4)-Sb(1) bond length is 2.55 Å. The Ni(4)-Sb(2) bond length is 2.65 Å. The Ni(4)-Sb(3) bond length is 2.63 Å. The Ni(4)-S(2) bond length is 2.24 Å. The Ni(4)-S(3) bond length is 2.34 Å. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 5-coordinate geometry to one Mg(1), one Ni(2), one Ni(3), one Ni(4), and one S(1) atom. The Sb(1)-S(1) bond length is 2.69 Å. In the second Sb site, Sb(2) is bonded in a 5-coordinate geometry to one Mg(1), one Ni(1), one Ni(3), one Ni(4), and one S(2) atom. The Sb(2)-S(2) bond length is 2.69 Å. In the third Sb site, Sb(3) is bonded in a 5-coordinate geometry to one Mg(1), one Ni(1), one Ni(2), one Ni(4), and one S(3) atom. The Sb(3)-S(3) bond length is 2.73 Å. In the fourth Sb site, Sb(4) is bonded in a 5-coordinate geometry to one Mg(1), one Ni(1), one Ni(2), one Ni(3), and one S(4) atom. The Sb(4)-S(4) bond length is 2.70 Å. There are four inequivalent S sites. In the first S site, S(1) is bonded in a 4-coordinate geometry to one Mg(1), one Ni(2), one Ni(3), and one Sb(1) atom. In the second S site, S(2) is bonded in a 4-coordinate geometry to one Mg(1), one Ni(3), one Ni(4), and one Sb(2) atom. In the third S site, S(3) is bonded in a distorted tetrahedral geometry to one Ni(1), one Ni(2), one Ni(4), and one Sb(3) atom. In the fourth S site, S(4) is bonded in a 4-coordinate geometry to one Mg(1), one Ni(1), one Ni(3), and one Sb(4) atom.