Ba2Mg(TiS3)2 crystallizes in the hexagonal P-6m2 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a hexagonal planar geometry to six equivalent S(1) atoms. In the second Ba site, Ba(2) is bonded in a hexagonal planar geometry to six equivalent S(2) atoms. Mg(1) is bonded in a distorted trigonal bipyramidal geometry to two equivalent Ti(1) and three equivalent S(2) atoms. Ti(1) is bonded in a 4-coordinate geometry to one Mg(1) and three equivalent S(1) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Ba(1) and two equivalent Ti(1) atoms. In the second S site, S(2) is bonded in a distorted single-bond geometry to two equivalent Ba(2) and one Mg(1) atom.
Ba2Mg(TiS3)2 crystallizes in the hexagonal P-6m2 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a hexagonal planar geometry to six equivalent S(1) atoms. All Ba(1)-S(1) bond lengths are 3.53 Å. In the second Ba site, Ba(2) is bonded in a hexagonal planar geometry to six equivalent S(2) atoms. All Ba(2)-S(2) bond lengths are 3.53 Å. Mg(1) is bonded in a distorted trigonal bipyramidal geometry to two equivalent Ti(1) and three equivalent S(2) atoms. Both Mg(1)-Ti(1) bond lengths are 2.45 Å. All Mg(1)-S(2) bond lengths are 2.22 Å. Ti(1) is bonded in a 4-coordinate geometry to one Mg(1) and three equivalent S(1) atoms. All Ti(1)-S(1) bond lengths are 2.34 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Ba(1) and two equivalent Ti(1) atoms. In the second S site, S(2) is bonded in a distorted single-bond geometry to two equivalent Ba(2) and one Mg(1) atom.