Dy4Cu5P7 is Parent of FeAs superconductors-derived structured and crystallizes in the tetragonal I-42m space group. Dy(1) is bonded in a 8-coordinate geometry to one Cu(3), one P(2), two equivalent P(3), and four equivalent P(1) atoms. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to four equivalent P(1) atoms to form a mixture of distorted edge and corner-sharing CuP4 tetrahedra. In the second Cu site, Cu(2) is bonded to four equivalent P(1) atoms to form a mixture of distorted edge and corner-sharing CuP4 tetrahedra. In the third Cu site, Cu(3) is bonded to four equivalent Dy(1) and four equivalent P(3) atoms to form distorted corner-sharing CuDy4P4 hexagonal bipyramids. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 8-coordinate geometry to four equivalent Dy(1), two equivalent Cu(1), and two equivalent Cu(2) atoms. In the second P site, P(2) is bonded in a 8-coordinate geometry to four equivalent Dy(1) and four equivalent P(3) atoms. In the third P site, P(3) is bonded in a 8-coordinate geometry to four equivalent Dy(1), two equivalent Cu(3), and two equivalent P(2) atoms.
Dy4Cu5P7 is Parent of FeAs superconductors-derived structured and crystallizes in the tetragonal I-42m space group. Dy(1) is bonded in a 8-coordinate geometry to one Cu(3), one P(2), two equivalent P(3), and four equivalent P(1) atoms. The Dy(1)-Cu(3) bond length is 2.95 Å. The Dy(1)-P(2) bond length is 2.86 Å. Both Dy(1)-P(3) bond lengths are 2.91 Å. There are two shorter (2.83 Å) and two longer (2.88 Å) Dy(1)-P(1) bond lengths. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to four equivalent P(1) atoms to form a mixture of distorted edge and corner-sharing CuP4 tetrahedra. There are two shorter (2.38 Å) and two longer (2.42 Å) Cu(1)-P(1) bond lengths. In the second Cu site, Cu(2) is bonded to four equivalent P(1) atoms to form a mixture of distorted edge and corner-sharing CuP4 tetrahedra. All Cu(2)-P(1) bond lengths are 2.40 Å. In the third Cu site, Cu(3) is bonded to four equivalent Dy(1) and four equivalent P(3) atoms to form distorted corner-sharing CuDy4P4 hexagonal bipyramids. All Cu(3)-P(3) bond lengths are 2.64 Å. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 8-coordinate geometry to four equivalent Dy(1), two equivalent Cu(1), and two equivalent Cu(2) atoms. In the second P site, P(2) is bonded in a 8-coordinate geometry to four equivalent Dy(1) and four equivalent P(3) atoms. All P(2)-P(3) bond lengths are 2.64 Å. In the third P site, P(3) is bonded in a 8-coordinate geometry to four equivalent Dy(1), two equivalent Cu(3), and two equivalent P(2) atoms.