Dy2P4O13 crystallizes in the monoclinic C2/c space group. Dy(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(1), one O(2), one O(6), and one O(7) atom to form corner-sharing PO4 tetrahedra. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a bent 120 degrees geometry to two equivalent P(2) atoms. In the second O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Dy(1) and one P(2) atom. In the third O site, O(2) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one Dy(1) and one P(1) atom. In the fifth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Dy(1) and one P(1) atom. In the sixth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Dy(1) and one P(1) atom. In the seventh O site, O(6) is bonded in a distorted single-bond geometry to two equivalent Dy(1) and one P(2) atom.
Dy2P4O13 crystallizes in the monoclinic C2/c space group. Dy(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. The Dy(1)-O(1) bond length is 2.25 Å. The Dy(1)-O(3) bond length is 2.24 Å. There is one shorter (2.33 Å) and one longer (2.47 Å) Dy(1)-O(4) bond length. There is one shorter (2.33 Å) and one longer (2.46 Å) Dy(1)-O(5) bond length. There is one shorter (2.60 Å) and one longer (2.69 Å) Dy(1)-O(6) bond length. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form corner-sharing PO4 tetrahedra. The P(1)-O(2) bond length is 1.61 Å. The P(1)-O(3) bond length is 1.50 Å. The P(1)-O(4) bond length is 1.54 Å. The P(1)-O(5) bond length is 1.54 Å. In the second P site, P(2) is bonded to one O(1), one O(2), one O(6), and one O(7) atom to form corner-sharing PO4 tetrahedra. The P(2)-O(1) bond length is 1.50 Å. The P(2)-O(2) bond length is 1.59 Å. The P(2)-O(6) bond length is 1.53 Å. The P(2)-O(7) bond length is 1.61 Å. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a bent 120 degrees geometry to two equivalent P(2) atoms. In the second O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Dy(1) and one P(2) atom. In the third O site, O(2) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one Dy(1) and one P(1) atom. In the fifth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Dy(1) and one P(1) atom. In the sixth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Dy(1) and one P(1) atom. In the seventh O site, O(6) is bonded in a distorted single-bond geometry to two equivalent Dy(1) and one P(2) atom.