MgCo2(SbS)2 crystallizes in the monoclinic Pm space group. Mg(1) is bonded in a 5-coordinate geometry to two equivalent Co(1), two equivalent Sb(2), one S(1), and two equivalent S(2) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 7-coordinate geometry to two equivalent Mg(1), one Sb(1), two equivalent Sb(2), and two equivalent S(1) atoms. In the second Co site, Co(2) is bonded in a 6-coordinate geometry to one Sb(2), two equivalent Sb(1), one S(1), and two equivalent S(2) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one Co(1), two equivalent Co(2), and one S(2) atom to form distorted corner-sharing SbCo3S tetrahedra. In the second Sb site, Sb(2) is bonded in a 5-coordinate geometry to two equivalent Mg(1), one Co(2), and two equivalent Co(1) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded in a 4-coordinate geometry to one Mg(1), one Co(2), and two equivalent Co(1) atoms. In the second S site, S(2) is bonded in a 5-coordinate geometry to two equivalent Mg(1), two equivalent Co(2), and one Sb(1) atom.
MgCo2(SbS)2 crystallizes in the monoclinic Pm space group. Mg(1) is bonded in a 5-coordinate geometry to two equivalent Co(1), two equivalent Sb(2), one S(1), and two equivalent S(2) atoms. Both Mg(1)-Co(1) bond lengths are 2.97 Å. There is one shorter (2.76 Å) and one longer (2.79 Å) Mg(1)-Sb(2) bond length. The Mg(1)-S(1) bond length is 2.47 Å. Both Mg(1)-S(2) bond lengths are 2.48 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 7-coordinate geometry to two equivalent Mg(1), one Sb(1), two equivalent Sb(2), and two equivalent S(1) atoms. The Co(1)-Sb(1) bond length is 2.51 Å. Both Co(1)-Sb(2) bond lengths are 2.58 Å. Both Co(1)-S(1) bond lengths are 2.22 Å. In the second Co site, Co(2) is bonded in a 6-coordinate geometry to one Sb(2), two equivalent Sb(1), one S(1), and two equivalent S(2) atoms. The Co(2)-Sb(2) bond length is 2.73 Å. Both Co(2)-Sb(1) bond lengths are 2.53 Å. The Co(2)-S(1) bond length is 2.23 Å. Both Co(2)-S(2) bond lengths are 2.41 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one Co(1), two equivalent Co(2), and one S(2) atom to form distorted corner-sharing SbCo3S tetrahedra. The Sb(1)-S(2) bond length is 2.71 Å. In the second Sb site, Sb(2) is bonded in a 5-coordinate geometry to two equivalent Mg(1), one Co(2), and two equivalent Co(1) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded in a 4-coordinate geometry to one Mg(1), one Co(2), and two equivalent Co(1) atoms. In the second S site, S(2) is bonded in a 5-coordinate geometry to two equivalent Mg(1), two equivalent Co(2), and one Sb(1) atom.