Dy6Mn(SiS7)2 crystallizes in the trigonal P3 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(1), one S(6), two equivalent S(3), two equivalent S(4), and two equivalent S(5) atoms. In the second Dy site, Dy(2) is bonded in a 8-coordinate geometry to one S(2), one S(5), two equivalent S(3), two equivalent S(4), and two equivalent S(6) atoms. Mn(1) is bonded in an octahedral geometry to three equivalent S(3) and three equivalent S(4) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a tetrahedral geometry to one S(1) and three equivalent S(5) atoms. In the second Si site, Si(2) is bonded in a tetrahedral geometry to one S(2) and three equivalent S(6) atoms. There are six inequivalent S sites. In the first S site, S(1) is bonded to three equivalent Dy(1) and one Si(1) atom to form corner-sharing SDy3Si tetrahedra. In the second S site, S(2) is bonded to three equivalent Dy(2) and one Si(2) atom to form corner-sharing SDy3Si tetrahedra. In the third S site, S(3) is bonded to two equivalent Dy(1), two equivalent Dy(2), and one Mn(1) atom to form distorted SDy4Mn trigonal bipyramids that share corners with two equivalent S(1)Dy3Si tetrahedra, corners with two equivalent S(2)Dy3Si tetrahedra,  a cornercorner with one S(4)Dy4Mn trigonal bipyramid, corners with two equivalent S(3)Dy4Mn trigonal bipyramids, edges with two equivalent S(3)Dy4Mn trigonal bipyramids, edges with two equivalent S(4)Dy4Mn trigonal bipyramids, and faces with two equivalent S(4)Dy4Mn trigonal bipyramids. In the fourth S site, S(4) is bonded to two equivalent Dy(1), two equivalent Dy(2), and one Mn(1) atom to form distorted SDy4Mn trigonal bipyramids that share corners with two equivalent S(1)Dy3Si tetrahedra, corners with two equivalent S(2)Dy3Si tetrahedra,  a cornercorner with one S(3)Dy4Mn trigonal bipyramid, corners with two equivalent S(4)Dy4Mn trigonal bipyramids, edges with two equivalent S(3)Dy4Mn trigonal bipyramids, edges with two equivalent S(4)Dy4Mn trigonal bipyramids, and faces with two equivalent S(3)Dy4Mn trigonal bipyramids. In the fifth S site, S(5) is bonded in a distorted rectangular see-saw-like geometry to one Dy(2), two equivalent Dy(1), and one Si(1) atom. In the sixth S site, S(6) is bonded in a distorted rectangular see-saw-like geometry to one Dy(1), two equivalent Dy(2), and one Si(2) atom.
Dy6Mn(SiS7)2 crystallizes in the trigonal P3 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(1), one S(6), two equivalent S(3), two equivalent S(4), and two equivalent S(5) atoms. The Dy(1)-S(1) bond length is 2.97 Å. The Dy(1)-S(6) bond length is 2.93 Å. There is one shorter (2.84 Å) and one longer (3.08 Å) Dy(1)-S(3) bond length. There is one shorter (2.75 Å) and one longer (2.77 Å) Dy(1)-S(4) bond length. There is one shorter (2.81 Å) and one longer (2.90 Å) Dy(1)-S(5) bond length. In the second Dy site, Dy(2) is bonded in a 8-coordinate geometry to one S(2), one S(5), two equivalent S(3), two equivalent S(4), and two equivalent S(6) atoms. The Dy(2)-S(2) bond length is 2.97 Å. The Dy(2)-S(5) bond length is 2.92 Å. There is one shorter (2.75 Å) and one longer (2.77 Å) Dy(2)-S(3) bond length. There is one shorter (2.93 Å) and one longer (2.99 Å) Dy(2)-S(4) bond length. There is one shorter (2.80 Å) and one longer (2.89 Å) Dy(2)-S(6) bond length. Mn(1) is bonded in an octahedral geometry to three equivalent S(3) and three equivalent S(4) atoms. All Mn(1)-S(3) bond lengths are 2.55 Å. All Mn(1)-S(4) bond lengths are 2.57 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a tetrahedral geometry to one S(1) and three equivalent S(5) atoms. The Si(1)-S(1) bond length is 2.11 Å. All Si(1)-S(5) bond lengths are 2.14 Å. In the second Si site, Si(2) is bonded in a tetrahedral geometry to one S(2) and three equivalent S(6) atoms. The Si(2)-S(2) bond length is 2.11 Å. All Si(2)-S(6) bond lengths are 2.14 Å. There are six inequivalent S sites. In the first S site, S(1) is bonded to three equivalent Dy(1) and one Si(1) atom to form corner-sharing SDy3Si tetrahedra. In the second S site, S(2) is bonded to three equivalent Dy(2) and one Si(2) atom to form corner-sharing SDy3Si tetrahedra. In the third S site, S(3) is bonded to two equivalent Dy(1), two equivalent Dy(2), and one Mn(1) atom to form distorted SDy4Mn trigonal bipyramids that share corners with two equivalent S(1)Dy3Si tetrahedra, corners with two equivalent S(2)Dy3Si tetrahedra,  a cornercorner with one S(4)Dy4Mn trigonal bipyramid, corners with two equivalent S(3)Dy4Mn trigonal bipyramids, edges with two equivalent S(3)Dy4Mn trigonal bipyramids, edges with two equivalent S(4)Dy4Mn trigonal bipyramids, and faces with two equivalent S(4)Dy4Mn trigonal bipyramids. In the fourth S site, S(4) is bonded to two equivalent Dy(1), two equivalent Dy(2), and one Mn(1) atom to form distorted SDy4Mn trigonal bipyramids that share corners with two equivalent S(1)Dy3Si tetrahedra, corners with two equivalent S(2)Dy3Si tetrahedra,  a cornercorner with one S(3)Dy4Mn trigonal bipyramid, corners with two equivalent S(4)Dy4Mn trigonal bipyramids, edges with two equivalent S(3)Dy4Mn trigonal bipyramids, edges with two equivalent S(4)Dy4Mn trigonal bipyramids, and faces with two equivalent S(3)Dy4Mn trigonal bipyramids. In the fifth S site, S(5) is bonded in a distorted rectangular see-saw-like geometry to one Dy(2), two equivalent Dy(1), and one Si(1) atom. In the sixth S site, S(6) is bonded in a distorted rectangular see-saw-like geometry to one Dy(1), two equivalent Dy(2), and one Si(2) atom.