Dy3CrS6 crystallizes in the orthorhombic Pnnm space group. There are three inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 8-coordinate geometry to one S(4), one S(6), two equivalent S(1), two equivalent S(2), and two equivalent S(5) atoms. In the second Dy site, Dy(2) is bonded in a 8-coordinate geometry to one S(4), one S(5), two equivalent S(2), two equivalent S(3), and two equivalent S(6) atoms. In the third Dy site, Dy(3) is bonded to one S(1), one S(2), one S(4), two equivalent S(3), and two equivalent S(5) atoms to form distorted DyS7 pentagonal bipyramids that share  a cornercorner with one Cr(2)S6 octahedra, edges with two equivalent Cr(1)S6 octahedra, and edges with two equivalent Dy(3)S7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 34°. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to two equivalent S(3) and four equivalent S(4) atoms to form CrS6 octahedra that share edges with two equivalent Cr(1)S6 octahedra and edges with four equivalent Dy(3)S7 pentagonal bipyramids. In the second Cr site, Cr(2) is bonded to two equivalent S(1) and four equivalent S(6) atoms to form CrS6 octahedra that share corners with two equivalent Dy(3)S7 pentagonal bipyramids and edges with two equivalent Cr(2)S6 octahedra. There are six inequivalent S sites. In the first S site, S(5) is bonded to one Dy(2), two equivalent Dy(1), and two equivalent Dy(3) atoms to form distorted SDy5 trigonal bipyramids that share  a cornercorner with one S(4)Dy3Cr2 trigonal bipyramid, corners with two equivalent S(2)Dy5 trigonal bipyramids, corners with four equivalent S(3)Dy4Cr trigonal bipyramids, corners with four equivalent S(1)Dy3Cr trigonal pyramids,  an edgeedge with one S(3)Dy4Cr trigonal bipyramid, edges with two equivalent S(4)Dy3Cr2 trigonal bipyramids, edges with two equivalent S(6)Dy3Cr2 trigonal bipyramids, edges with two equivalent S(5)Dy5 trigonal bipyramids, edges with three equivalent S(2)Dy5 trigonal bipyramids, and  an edgeedge with one S(1)Dy3Cr trigonal pyramid. In the second S site, S(6) is bonded to one Dy(1), two equivalent Dy(2), and two equivalent Cr(2) atoms to form distorted SDy3Cr2 trigonal bipyramids that share corners with two equivalent S(6)Dy3Cr2 trigonal bipyramids, corners with two equivalent S(3)Dy4Cr trigonal bipyramids, corners with three equivalent S(4)Dy3Cr2 trigonal bipyramids, corners with four equivalent S(2)Dy5 trigonal bipyramids, corners with two equivalent S(1)Dy3Cr trigonal pyramids,  an edgeedge with one S(3)Dy4Cr trigonal bipyramid,  an edgeedge with one S(2)Dy5 trigonal bipyramid, edges with two equivalent S(5)Dy5 trigonal bipyramids, edges with three equivalent S(6)Dy3Cr2 trigonal bipyramids, and edges with two equivalent S(1)Dy3Cr trigonal pyramids. In the third S site, S(1) is bonded to one Dy(3), two equivalent Dy(1), and one Cr(2) atom to form distorted SDy3Cr trigonal pyramids that share corners with two equivalent S(6)Dy3Cr2 trigonal bipyramids, corners with two equivalent S(3)Dy4Cr trigonal bipyramids, corners with two equivalent S(2)Dy5 trigonal bipyramids, corners with three equivalent S(4)Dy3Cr2 trigonal bipyramids, corners with four equivalent S(5)Dy5 trigonal bipyramids, corners with three equivalent S(1)Dy3Cr trigonal pyramids,  an edgeedge with one S(5)Dy5 trigonal bipyramid, edges with two equivalent S(6)Dy3Cr2 trigonal bipyramids, and  a faceface with one S(2)Dy5 trigonal bipyramid. In the fourth S site, S(2) is bonded to one Dy(3), two equivalent Dy(1), and two equivalent Dy(2) atoms to form distorted SDy5 trigonal bipyramids that share  a cornercorner with one S(4)Dy3Cr2 trigonal bipyramid, corners with two equivalent S(5)Dy5 trigonal bipyramids, corners with four equivalent S(6)Dy3Cr2 trigonal bipyramids, corners with four equivalent S(3)Dy4Cr trigonal bipyramids, corners with two equivalent S(1)Dy3Cr trigonal pyramids,  an edgeedge with one S(6)Dy3Cr2 trigonal bipyramid,  an edgeedge with one S(3)Dy4Cr trigonal bipyramid, edges with two equivalent S(4)Dy3Cr2 trigonal bipyramids, edges with two equivalent S(2)Dy5 trigonal bipyramids, edges with three equivalent S(5)Dy5 trigonal bipyramids, and  a faceface with one S(1)Dy3Cr trigonal pyramid. In the fifth S site, S(3) is bonded to two equivalent Dy(2), two equivalent Dy(3), and one Cr(1) atom to form distorted SDy4Cr trigonal bipyramids that share  a cornercorner with one S(3)Dy4Cr trigonal bipyramid, corners with two equivalent S(6)Dy3Cr2 trigonal bipyramids, corners with four equivalent S(2)Dy5 trigonal bipyramids, corners with four equivalent S(5)Dy5 trigonal bipyramids, corners with two equivalent S(1)Dy3Cr trigonal pyramids,  an edgeedge with one S(6)Dy3Cr2 trigonal bipyramid,  an edgeedge with one S(2)Dy5 trigonal bipyramid,  an edgeedge with one S(5)Dy5 trigonal bipyramid, edges with two equivalent S(3)Dy4Cr trigonal bipyramids, and edges with four equivalent S(4)Dy3Cr2 trigonal bipyramids. In the sixth S site, S(4) is bonded to one Dy(1), one Dy(2), one Dy(3), and two equivalent Cr(1) atoms to form distorted SDy3Cr2 trigonal bipyramids that share  a cornercorner with one S(2)Dy5 trigonal bipyramid,  a cornercorner with one S(5)Dy5 trigonal bipyramid, corners with three equivalent S(6)Dy3Cr2 trigonal bipyramids, corners with four equivalent S(4)Dy3Cr2 trigonal bipyramids, corners with three equivalent S(1)Dy3Cr trigonal pyramids,  an edgeedge with one S(4)Dy3Cr2 trigonal bipyramid, edges with two equivalent S(2)Dy5 trigonal bipyramids, edges with two equivalent S(5)Dy5 trigonal bipyramids, and edges with four equivalent S(3)Dy4Cr trigonal bipyramids.
Dy3CrS6 crystallizes in the orthorhombic Pnnm space group. There are three inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 8-coordinate geometry to one S(4), one S(6), two equivalent S(1), two equivalent S(2), and two equivalent S(5) atoms. The Dy(1)-S(4) bond length is 2.91 Å. The Dy(1)-S(6) bond length is 2.91 Å. Both Dy(1)-S(1) bond lengths are 2.76 Å. Both Dy(1)-S(2) bond lengths are 2.86 Å. Both Dy(1)-S(5) bond lengths are 2.80 Å. In the second Dy site, Dy(2) is bonded in a 8-coordinate geometry to one S(4), one S(5), two equivalent S(2), two equivalent S(3), and two equivalent S(6) atoms. The Dy(2)-S(4) bond length is 3.13 Å. The Dy(2)-S(5) bond length is 3.01 Å. Both Dy(2)-S(2) bond lengths are 2.74 Å. Both Dy(2)-S(3) bond lengths are 2.85 Å. Both Dy(2)-S(6) bond lengths are 2.87 Å. In the third Dy site, Dy(3) is bonded to one S(1), one S(2), one S(4), two equivalent S(3), and two equivalent S(5) atoms to form distorted DyS7 pentagonal bipyramids that share  a cornercorner with one Cr(2)S6 octahedra, edges with two equivalent Cr(1)S6 octahedra, and edges with two equivalent Dy(3)S7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 34°. The Dy(3)-S(1) bond length is 2.71 Å. The Dy(3)-S(2) bond length is 2.85 Å. The Dy(3)-S(4) bond length is 2.81 Å. Both Dy(3)-S(3) bond lengths are 2.77 Å. Both Dy(3)-S(5) bond lengths are 2.73 Å. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to two equivalent S(3) and four equivalent S(4) atoms to form CrS6 octahedra that share edges with two equivalent Cr(1)S6 octahedra and edges with four equivalent Dy(3)S7 pentagonal bipyramids. Both Cr(1)-S(3) bond lengths are 2.42 Å. All Cr(1)-S(4) bond lengths are 2.46 Å. In the second Cr site, Cr(2) is bonded to two equivalent S(1) and four equivalent S(6) atoms to form CrS6 octahedra that share corners with two equivalent Dy(3)S7 pentagonal bipyramids and edges with two equivalent Cr(2)S6 octahedra. Both Cr(2)-S(1) bond lengths are 2.35 Å. All Cr(2)-S(6) bond lengths are 2.49 Å. There are six inequivalent S sites. In the first S site, S(5) is bonded to one Dy(2), two equivalent Dy(1), and two equivalent Dy(3) atoms to form distorted SDy5 trigonal bipyramids that share  a cornercorner with one S(4)Dy3Cr2 trigonal bipyramid, corners with two equivalent S(2)Dy5 trigonal bipyramids, corners with four equivalent S(3)Dy4Cr trigonal bipyramids, corners with four equivalent S(1)Dy3Cr trigonal pyramids,  an edgeedge with one S(3)Dy4Cr trigonal bipyramid, edges with two equivalent S(4)Dy3Cr2 trigonal bipyramids, edges with two equivalent S(6)Dy3Cr2 trigonal bipyramids, edges with two equivalent S(5)Dy5 trigonal bipyramids, edges with three equivalent S(2)Dy5 trigonal bipyramids, and  an edgeedge with one S(1)Dy3Cr trigonal pyramid. In the second S site, S(6) is bonded to one Dy(1), two equivalent Dy(2), and two equivalent Cr(2) atoms to form distorted SDy3Cr2 trigonal bipyramids that share corners with two equivalent S(6)Dy3Cr2 trigonal bipyramids, corners with two equivalent S(3)Dy4Cr trigonal bipyramids, corners with three equivalent S(4)Dy3Cr2 trigonal bipyramids, corners with four equivalent S(2)Dy5 trigonal bipyramids, corners with two equivalent S(1)Dy3Cr trigonal pyramids,  an edgeedge with one S(3)Dy4Cr trigonal bipyramid,  an edgeedge with one S(2)Dy5 trigonal bipyramid, edges with two equivalent S(5)Dy5 trigonal bipyramids, edges with three equivalent S(6)Dy3Cr2 trigonal bipyramids, and edges with two equivalent S(1)Dy3Cr trigonal pyramids. In the third S site, S(1) is bonded to one Dy(3), two equivalent Dy(1), and one Cr(2) atom to form distorted SDy3Cr trigonal pyramids that share corners with two equivalent S(6)Dy3Cr2 trigonal bipyramids, corners with two equivalent S(3)Dy4Cr trigonal bipyramids, corners with two equivalent S(2)Dy5 trigonal bipyramids, corners with three equivalent S(4)Dy3Cr2 trigonal bipyramids, corners with four equivalent S(5)Dy5 trigonal bipyramids, corners with three equivalent S(1)Dy3Cr trigonal pyramids,  an edgeedge with one S(5)Dy5 trigonal bipyramid, edges with two equivalent S(6)Dy3Cr2 trigonal bipyramids, and  a faceface with one S(2)Dy5 trigonal bipyramid. In the fourth S site, S(2) is bonded to one Dy(3), two equivalent Dy(1), and two equivalent Dy(2) atoms to form distorted SDy5 trigonal bipyramids that share  a cornercorner with one S(4)Dy3Cr2 trigonal bipyramid, corners with two equivalent S(5)Dy5 trigonal bipyramids, corners with four equivalent S(6)Dy3Cr2 trigonal bipyramids, corners with four equivalent S(3)Dy4Cr trigonal bipyramids, corners with two equivalent S(1)Dy3Cr trigonal pyramids,  an edgeedge with one S(6)Dy3Cr2 trigonal bipyramid,  an edgeedge with one S(3)Dy4Cr trigonal bipyramid, edges with two equivalent S(4)Dy3Cr2 trigonal bipyramids, edges with two equivalent S(2)Dy5 trigonal bipyramids, edges with three equivalent S(5)Dy5 trigonal bipyramids, and  a faceface with one S(1)Dy3Cr trigonal pyramid. In the fifth S site, S(3) is bonded to two equivalent Dy(2), two equivalent Dy(3), and one Cr(1) atom to form distorted SDy4Cr trigonal bipyramids that share  a cornercorner with one S(3)Dy4Cr trigonal bipyramid, corners with two equivalent S(6)Dy3Cr2 trigonal bipyramids, corners with four equivalent S(2)Dy5 trigonal bipyramids, corners with four equivalent S(5)Dy5 trigonal bipyramids, corners with two equivalent S(1)Dy3Cr trigonal pyramids,  an edgeedge with one S(6)Dy3Cr2 trigonal bipyramid,  an edgeedge with one S(2)Dy5 trigonal bipyramid,  an edgeedge with one S(5)Dy5 trigonal bipyramid, edges with two equivalent S(3)Dy4Cr trigonal bipyramids, and edges with four equivalent S(4)Dy3Cr2 trigonal bipyramids. In the sixth S site, S(4) is bonded to one Dy(1), one Dy(2), one Dy(3), and two equivalent Cr(1) atoms to form distorted SDy3Cr2 trigonal bipyramids that share  a cornercorner with one S(2)Dy5 trigonal bipyramid,  a cornercorner with one S(5)Dy5 trigonal bipyramid, corners with three equivalent S(6)Dy3Cr2 trigonal bipyramids, corners with four equivalent S(4)Dy3Cr2 trigonal bipyramids, corners with three equivalent S(1)Dy3Cr trigonal pyramids,  an edgeedge with one S(4)Dy3Cr2 trigonal bipyramid, edges with two equivalent S(2)Dy5 trigonal bipyramids, edges with two equivalent S(5)Dy5 trigonal bipyramids, and edges with four equivalent S(3)Dy4Cr trigonal bipyramids.