DyCrS3 crystallizes in the orthorhombic Pnnm space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 8-coordinate geometry to one S(2), one S(4), two equivalent S(3), two equivalent S(5), and two equivalent S(6) atoms. In the second Dy site, Dy(2) is bonded to one S(1), one S(2), one S(3), two equivalent S(4), and two equivalent S(6) atoms to form distorted DyS7 pentagonal bipyramids that share  a cornercorner with one Cr(1)S6 octahedra, corners with four equivalent Cr(3)S5 square pyramids, edges with two equivalent Cr(2)S6 octahedra, edges with two equivalent Dy(2)S7 pentagonal bipyramids, and  an edgeedge with one Cr(3)S5 square pyramid. The corner-sharing octahedral tilt angles are 41°. There are three inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to two equivalent S(1) and four equivalent S(5) atoms to form CrS6 octahedra that share corners with two equivalent Dy(2)S7 pentagonal bipyramids, edges with two equivalent Cr(1)S6 octahedra, and edges with four equivalent Cr(3)S5 square pyramids. In the second Cr site, Cr(2) is bonded to two equivalent S(6) and four equivalent S(2) atoms to form CrS6 octahedra that share edges with two equivalent Cr(2)S6 octahedra and edges with four equivalent Dy(2)S7 pentagonal bipyramids. In the third Cr site, Cr(3) is bonded to one S(5), two equivalent S(1), and two equivalent S(4) atoms to form CrS5 square pyramids that share corners with four equivalent Dy(2)S7 pentagonal bipyramids, edges with two equivalent Cr(1)S6 octahedra,  an edgeedge with one Dy(2)S7 pentagonal bipyramid, and edges with two equivalent Cr(3)S5 square pyramids. There are six inequivalent S sites. In the first S site, S(5) is bonded to two equivalent Dy(1), one Cr(3), and two equivalent Cr(1) atoms to form distorted SDy2Cr3 trigonal bipyramids that share corners with two equivalent S(6)Dy4Cr square pyramids, corners with two equivalent S(1)DyCr3 tetrahedra, corners with two equivalent S(5)Dy2Cr3 trigonal bipyramids, corners with two equivalent S(2)Dy2Cr2 trigonal pyramids,  an edgeedge with one S(6)Dy4Cr square pyramid, edges with two equivalent S(4)Dy3Cr2 square pyramids, edges with two equivalent S(1)DyCr3 tetrahedra, and edges with three equivalent S(5)Dy2Cr3 trigonal bipyramids. In the second S site, S(6) is bonded to two equivalent Dy(1), two equivalent Dy(2), and one Cr(2) atom to form SDy4Cr square pyramids that share  a cornercorner with one S(6)Dy4Cr square pyramid, corners with four equivalent S(4)Dy3Cr2 square pyramids, corners with two equivalent S(1)DyCr3 tetrahedra, corners with two equivalent S(5)Dy2Cr3 trigonal bipyramids,  an edgeedge with one S(4)Dy3Cr2 square pyramid, edges with two equivalent S(6)Dy4Cr square pyramids,  an edgeedge with one S(5)Dy2Cr3 trigonal bipyramid, and edges with four equivalent S(2)Dy2Cr2 trigonal pyramids. In the third S site, S(1) is bonded to one Dy(2), one Cr(1), and two equivalent Cr(3) atoms to form distorted SDyCr3 tetrahedra that share corners with two equivalent S(6)Dy4Cr square pyramids, corners with four equivalent S(4)Dy3Cr2 square pyramids, corners with three equivalent S(1)DyCr3 tetrahedra, corners with two equivalent S(5)Dy2Cr3 trigonal bipyramids,  a cornercorner with one S(2)Dy2Cr2 trigonal pyramid,  an edgeedge with one S(4)Dy3Cr2 square pyramid, and edges with two equivalent S(5)Dy2Cr3 trigonal bipyramids. In the fourth S site, S(2) is bonded to one Dy(1), one Dy(2), and two equivalent Cr(2) atoms to form distorted SDy2Cr2 trigonal pyramids that share corners with three equivalent S(4)Dy3Cr2 square pyramids,  a cornercorner with one S(1)DyCr3 tetrahedra, corners with two equivalent S(5)Dy2Cr3 trigonal bipyramids, corners with four equivalent S(2)Dy2Cr2 trigonal pyramids, edges with four equivalent S(6)Dy4Cr square pyramids, and  an edgeedge with one S(2)Dy2Cr2 trigonal pyramid. In the fifth S site, S(3) is bonded in a trigonal non-coplanar geometry to one Dy(2) and two equivalent Dy(1) atoms. In the sixth S site, S(4) is bonded to one Dy(1), two equivalent Dy(2), and two equivalent Cr(3) atoms to form distorted SDy3Cr2 square pyramids that share corners with four equivalent S(6)Dy4Cr square pyramids, corners with four equivalent S(1)DyCr3 tetrahedra, corners with three equivalent S(2)Dy2Cr2 trigonal pyramids,  an edgeedge with one S(6)Dy4Cr square pyramid, edges with two equivalent S(4)Dy3Cr2 square pyramids,  an edgeedge with one S(1)DyCr3 tetrahedra, and edges with two equivalent S(5)Dy2Cr3 trigonal bipyramids.
DyCrS3 crystallizes in the orthorhombic Pnnm space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 8-coordinate geometry to one S(2), one S(4), two equivalent S(3), two equivalent S(5), and two equivalent S(6) atoms. The Dy(1)-S(2) bond length is 2.79 Å. The Dy(1)-S(4) bond length is 3.10 Å. Both Dy(1)-S(3) bond lengths are 2.62 Å. Both Dy(1)-S(5) bond lengths are 2.96 Å. Both Dy(1)-S(6) bond lengths are 2.95 Å. In the second Dy site, Dy(2) is bonded to one S(1), one S(2), one S(3), two equivalent S(4), and two equivalent S(6) atoms to form distorted DyS7 pentagonal bipyramids that share  a cornercorner with one Cr(1)S6 octahedra, corners with four equivalent Cr(3)S5 square pyramids, edges with two equivalent Cr(2)S6 octahedra, edges with two equivalent Dy(2)S7 pentagonal bipyramids, and  an edgeedge with one Cr(3)S5 square pyramid. The corner-sharing octahedral tilt angles are 41°. The Dy(2)-S(1) bond length is 2.93 Å. The Dy(2)-S(2) bond length is 2.74 Å. The Dy(2)-S(3) bond length is 2.75 Å. Both Dy(2)-S(4) bond lengths are 2.80 Å. Both Dy(2)-S(6) bond lengths are 2.75 Å. There are three inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to two equivalent S(1) and four equivalent S(5) atoms to form CrS6 octahedra that share corners with two equivalent Dy(2)S7 pentagonal bipyramids, edges with two equivalent Cr(1)S6 octahedra, and edges with four equivalent Cr(3)S5 square pyramids. Both Cr(1)-S(1) bond lengths are 2.35 Å. All Cr(1)-S(5) bond lengths are 2.44 Å. In the second Cr site, Cr(2) is bonded to two equivalent S(6) and four equivalent S(2) atoms to form CrS6 octahedra that share edges with two equivalent Cr(2)S6 octahedra and edges with four equivalent Dy(2)S7 pentagonal bipyramids. Both Cr(2)-S(6) bond lengths are 2.44 Å. All Cr(2)-S(2) bond lengths are 2.43 Å. In the third Cr site, Cr(3) is bonded to one S(5), two equivalent S(1), and two equivalent S(4) atoms to form CrS5 square pyramids that share corners with four equivalent Dy(2)S7 pentagonal bipyramids, edges with two equivalent Cr(1)S6 octahedra,  an edgeedge with one Dy(2)S7 pentagonal bipyramid, and edges with two equivalent Cr(3)S5 square pyramids. The Cr(3)-S(5) bond length is 2.33 Å. Both Cr(3)-S(1) bond lengths are 2.43 Å. Both Cr(3)-S(4) bond lengths are 2.46 Å. There are six inequivalent S sites. In the first S site, S(5) is bonded to two equivalent Dy(1), one Cr(3), and two equivalent Cr(1) atoms to form distorted SDy2Cr3 trigonal bipyramids that share corners with two equivalent S(6)Dy4Cr square pyramids, corners with two equivalent S(1)DyCr3 tetrahedra, corners with two equivalent S(5)Dy2Cr3 trigonal bipyramids, corners with two equivalent S(2)Dy2Cr2 trigonal pyramids,  an edgeedge with one S(6)Dy4Cr square pyramid, edges with two equivalent S(4)Dy3Cr2 square pyramids, edges with two equivalent S(1)DyCr3 tetrahedra, and edges with three equivalent S(5)Dy2Cr3 trigonal bipyramids. In the second S site, S(6) is bonded to two equivalent Dy(1), two equivalent Dy(2), and one Cr(2) atom to form SDy4Cr square pyramids that share  a cornercorner with one S(6)Dy4Cr square pyramid, corners with four equivalent S(4)Dy3Cr2 square pyramids, corners with two equivalent S(1)DyCr3 tetrahedra, corners with two equivalent S(5)Dy2Cr3 trigonal bipyramids,  an edgeedge with one S(4)Dy3Cr2 square pyramid, edges with two equivalent S(6)Dy4Cr square pyramids,  an edgeedge with one S(5)Dy2Cr3 trigonal bipyramid, and edges with four equivalent S(2)Dy2Cr2 trigonal pyramids. In the third S site, S(1) is bonded to one Dy(2), one Cr(1), and two equivalent Cr(3) atoms to form distorted SDyCr3 tetrahedra that share corners with two equivalent S(6)Dy4Cr square pyramids, corners with four equivalent S(4)Dy3Cr2 square pyramids, corners with three equivalent S(1)DyCr3 tetrahedra, corners with two equivalent S(5)Dy2Cr3 trigonal bipyramids,  a cornercorner with one S(2)Dy2Cr2 trigonal pyramid,  an edgeedge with one S(4)Dy3Cr2 square pyramid, and edges with two equivalent S(5)Dy2Cr3 trigonal bipyramids. In the fourth S site, S(2) is bonded to one Dy(1), one Dy(2), and two equivalent Cr(2) atoms to form distorted SDy2Cr2 trigonal pyramids that share corners with three equivalent S(4)Dy3Cr2 square pyramids,  a cornercorner with one S(1)DyCr3 tetrahedra, corners with two equivalent S(5)Dy2Cr3 trigonal bipyramids, corners with four equivalent S(2)Dy2Cr2 trigonal pyramids, edges with four equivalent S(6)Dy4Cr square pyramids, and  an edgeedge with one S(2)Dy2Cr2 trigonal pyramid. In the fifth S site, S(3) is bonded in a trigonal non-coplanar geometry to one Dy(2) and two equivalent Dy(1) atoms. In the sixth S site, S(4) is bonded to one Dy(1), two equivalent Dy(2), and two equivalent Cr(3) atoms to form distorted SDy3Cr2 square pyramids that share corners with four equivalent S(6)Dy4Cr square pyramids, corners with four equivalent S(1)DyCr3 tetrahedra, corners with three equivalent S(2)Dy2Cr2 trigonal pyramids,  an edgeedge with one S(6)Dy4Cr square pyramid, edges with two equivalent S(4)Dy3Cr2 square pyramids,  an edgeedge with one S(1)DyCr3 tetrahedra, and edges with two equivalent S(5)Dy2Cr3 trigonal bipyramids.