DyNi4B crystallizes in the orthorhombic Cmmm space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a distorted hexagonal planar geometry to six equivalent Ni(1) atoms. In the second Dy site, Dy(2) is bonded in a 18-coordinate geometry to four equivalent Ni(2), eight equivalent Ni(3), and six equivalent B(1) atoms. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 12-coordinate geometry to three equivalent Dy(1), two equivalent Ni(2), three equivalent Ni(1), and four equivalent Ni(3) atoms. In the second Ni site, Ni(2) is bonded in a distorted L-shaped geometry to two equivalent Dy(2), two equivalent Ni(1), and two equivalent B(1) atoms. In the third Ni site, Ni(3) is bonded in a distorted L-shaped geometry to two equivalent Dy(2), two equivalent Ni(1), and two equivalent B(1) atoms. B(1) is bonded in a 6-coordinate geometry to three equivalent Dy(2), two equivalent Ni(2), and four equivalent Ni(3) atoms.
DyNi4B crystallizes in the orthorhombic Cmmm space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a distorted hexagonal planar geometry to six equivalent Ni(1) atoms. All Dy(1)-Ni(1) bond lengths are 2.88 Å. In the second Dy site, Dy(2) is bonded in a 18-coordinate geometry to four equivalent Ni(2), eight equivalent Ni(3), and six equivalent B(1) atoms. All Dy(2)-Ni(2) bond lengths are 2.88 Å. All Dy(2)-Ni(3) bond lengths are 2.88 Å. All Dy(2)-B(1) bond lengths are 2.88 Å. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 12-coordinate geometry to three equivalent Dy(1), two equivalent Ni(2), three equivalent Ni(1), and four equivalent Ni(3) atoms. Both Ni(1)-Ni(2) bond lengths are 2.50 Å. All Ni(1)-Ni(1) bond lengths are 2.88 Å. All Ni(1)-Ni(3) bond lengths are 2.49 Å. In the second Ni site, Ni(2) is bonded in a distorted L-shaped geometry to two equivalent Dy(2), two equivalent Ni(1), and two equivalent B(1) atoms. Both Ni(2)-B(1) bond lengths are 2.04 Å. In the third Ni site, Ni(3) is bonded in a distorted L-shaped geometry to two equivalent Dy(2), two equivalent Ni(1), and two equivalent B(1) atoms. Both Ni(3)-B(1) bond lengths are 2.04 Å. B(1) is bonded in a 6-coordinate geometry to three equivalent Dy(2), two equivalent Ni(2), and four equivalent Ni(3) atoms.