Dy2Mn(GeO3)4 crystallizes in the orthorhombic Cmme space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to two equivalent O(2) and four equivalent O(4) atoms to form DyO6 octahedra that share corners with eight equivalent Ge(1)O4 tetrahedra. In the second Dy site, Dy(2) is bonded in a 8-coordinate geometry to four equivalent O(3) and four equivalent O(4) atoms. Mn(1) is bonded to two equivalent O(1) and four equivalent O(3) atoms to form MnO6 octahedra that share corners with eight equivalent Ge(1)O4 tetrahedra. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GeO4 tetrahedra that share corners with two equivalent Dy(1)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-70°. There are four inequivalent O sites. In the first O site, O(3) is bonded in a distorted trigonal planar geometry to one Dy(2), one Mn(1), and one Ge(1) atom. In the second O site, O(4) is bonded in a distorted trigonal planar geometry to one Dy(1), one Dy(2), and one Ge(1) atom. In the third O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1) and two equivalent Ge(1) atoms. In the fourth O site, O(2) is bonded in a trigonal non-coplanar geometry to one Dy(1) and two equivalent Ge(1) atoms.
Dy2Mn(GeO3)4 crystallizes in the orthorhombic Cmme space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to two equivalent O(2) and four equivalent O(4) atoms to form DyO6 octahedra that share corners with eight equivalent Ge(1)O4 tetrahedra. Both Dy(1)-O(2) bond lengths are 2.45 Å. All Dy(1)-O(4) bond lengths are 2.22 Å. In the second Dy site, Dy(2) is bonded in a 8-coordinate geometry to four equivalent O(3) and four equivalent O(4) atoms. All Dy(2)-O(3) bond lengths are 2.36 Å. All Dy(2)-O(4) bond lengths are 2.40 Å. Mn(1) is bonded to two equivalent O(1) and four equivalent O(3) atoms to form MnO6 octahedra that share corners with eight equivalent Ge(1)O4 tetrahedra. Both Mn(1)-O(1) bond lengths are 2.51 Å. All Mn(1)-O(3) bond lengths are 2.16 Å. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GeO4 tetrahedra that share corners with two equivalent Dy(1)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-70°. The Ge(1)-O(1) bond length is 1.81 Å. The Ge(1)-O(2) bond length is 1.85 Å. The Ge(1)-O(3) bond length is 1.74 Å. The Ge(1)-O(4) bond length is 1.75 Å. There are four inequivalent O sites. In the first O site, O(3) is bonded in a distorted trigonal planar geometry to one Dy(2), one Mn(1), and one Ge(1) atom. In the second O site, O(4) is bonded in a distorted trigonal planar geometry to one Dy(1), one Dy(2), and one Ge(1) atom. In the third O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1) and two equivalent Ge(1) atoms. In the fourth O site, O(2) is bonded in a trigonal non-coplanar geometry to one Dy(1) and two equivalent Ge(1) atoms.