Dy2B3O8 crystallizes in the orthorhombic Pbcn space group. Dy(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), two equivalent O(4), and three equivalent O(1) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form corner-sharing BO4 tetrahedra. In the second B site, B(2) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form corner-sharing BO4 tetrahedra. There are four inequivalent O sites. In the first O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Dy(1), one B(1), and one B(2) atom. In the second O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Dy(1) and one B(1) atom. In the third O site, O(1) is bonded in a distorted single-bond geometry to three equivalent Dy(1) and one B(2) atom. In the fourth O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Dy(1) and two equivalent B(2) atoms.
Dy2B3O8 crystallizes in the orthorhombic Pbcn space group. Dy(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), two equivalent O(4), and three equivalent O(1) atoms. The Dy(1)-O(2) bond length is 2.39 Å. The Dy(1)-O(3) bond length is 2.34 Å. There is one shorter (2.33 Å) and one longer (2.38 Å) Dy(1)-O(4) bond length. There are a spread of Dy(1)-O(1) bond distances ranging from 2.32-2.43 Å. There are two inequivalent B sites. In the first B site, B(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form corner-sharing BO4 tetrahedra. Both B(1)-O(3) bond lengths are 1.49 Å. Both B(1)-O(4) bond lengths are 1.48 Å. In the second B site, B(2) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form corner-sharing BO4 tetrahedra. The B(2)-O(1) bond length is 1.45 Å. The B(2)-O(3) bond length is 1.49 Å. There is one shorter (1.50 Å) and one longer (1.51 Å) B(2)-O(2) bond length. There are four inequivalent O sites. In the first O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Dy(1), one B(1), and one B(2) atom. In the second O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Dy(1) and one B(1) atom. In the third O site, O(1) is bonded in a distorted single-bond geometry to three equivalent Dy(1) and one B(2) atom. In the fourth O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Dy(1) and two equivalent B(2) atoms.