K4Mg(TiS3)2 crystallizes in the monoclinic C2 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one Mg(1), one S(1), one S(2), one S(3), and two equivalent S(4) atoms. In the second K site, K(2) is bonded in a 5-coordinate geometry to one S(1), one S(2), one S(4), and two equivalent S(3) atoms. Mg(1) is bonded in a distorted trigonal planar geometry to two equivalent K(1), one S(2), and two equivalent S(3) atoms. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a 5-coordinate geometry to one S(2), two equivalent S(3), and two equivalent S(4) atoms. In the second Ti site, Ti(2) is bonded in a trigonal bipyramidal geometry to one S(1), two equivalent S(3), and two equivalent S(4) atoms. There are four inequivalent S sites. In the first S site, S(1) is bonded in a 5-coordinate geometry to two equivalent K(1), two equivalent K(2), and one Ti(2) atom. In the second S site, S(2) is bonded in a distorted linear geometry to two equivalent K(1), two equivalent K(2), one Mg(1), and one Ti(1) atom. In the third S site, S(3) is bonded in a 6-coordinate geometry to one K(1), two equivalent K(2), one Mg(1), one Ti(1), and one Ti(2) atom. In the fourth S site, S(4) is bonded in a 5-coordinate geometry to one K(2), two equivalent K(1), one Ti(1), and one Ti(2) atom.
K4Mg(TiS3)2 crystallizes in the monoclinic C2 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one Mg(1), one S(1), one S(2), one S(3), and two equivalent S(4) atoms. The K(1)-Mg(1) bond length is 3.25 Å. The K(1)-S(1) bond length is 3.25 Å. The K(1)-S(2) bond length is 3.36 Å. The K(1)-S(3) bond length is 3.20 Å. There is one shorter (3.00 Å) and one longer (3.49 Å) K(1)-S(4) bond length. In the second K site, K(2) is bonded in a 5-coordinate geometry to one S(1), one S(2), one S(4), and two equivalent S(3) atoms. The K(2)-S(1) bond length is 3.10 Å. The K(2)-S(2) bond length is 3.37 Å. The K(2)-S(4) bond length is 3.26 Å. There is one shorter (3.26 Å) and one longer (3.34 Å) K(2)-S(3) bond length. Mg(1) is bonded in a distorted trigonal planar geometry to two equivalent K(1), one S(2), and two equivalent S(3) atoms. The Mg(1)-S(2) bond length is 2.40 Å. Both Mg(1)-S(3) bond lengths are 2.49 Å. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a 5-coordinate geometry to one S(2), two equivalent S(3), and two equivalent S(4) atoms. The Ti(1)-S(2) bond length is 2.36 Å. Both Ti(1)-S(3) bond lengths are 2.51 Å. Both Ti(1)-S(4) bond lengths are 2.58 Å. In the second Ti site, Ti(2) is bonded in a trigonal bipyramidal geometry to one S(1), two equivalent S(3), and two equivalent S(4) atoms. The Ti(2)-S(1) bond length is 2.25 Å. Both Ti(2)-S(3) bond lengths are 2.61 Å. Both Ti(2)-S(4) bond lengths are 2.38 Å. There are four inequivalent S sites. In the first S site, S(1) is bonded in a 5-coordinate geometry to two equivalent K(1), two equivalent K(2), and one Ti(2) atom. In the second S site, S(2) is bonded in a distorted linear geometry to two equivalent K(1), two equivalent K(2), one Mg(1), and one Ti(1) atom. In the third S site, S(3) is bonded in a 6-coordinate geometry to one K(1), two equivalent K(2), one Mg(1), one Ti(1), and one Ti(2) atom. In the fourth S site, S(4) is bonded in a 5-coordinate geometry to one K(2), two equivalent K(1), one Ti(1), and one Ti(2) atom.