Dy3GdNi4 crystallizes in the monoclinic Pm space group. There are three inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 7-coordinate geometry to one Ni(1), two equivalent Ni(2), two equivalent Ni(3), and two equivalent Ni(4) atoms. In the second Dy site, Dy(2) is bonded in a 7-coordinate geometry to one Ni(4), two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(3) atoms. In the third Dy site, Dy(3) is bonded in a 7-coordinate geometry to one Ni(3), two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(4) atoms. Gd(1) is bonded in a 7-coordinate geometry to one Ni(2), two equivalent Ni(1), two equivalent Ni(3), and two equivalent Ni(4) atoms. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 9-coordinate geometry to one Dy(1), two equivalent Dy(2), two equivalent Dy(3), two equivalent Gd(1), and two equivalent Ni(3) atoms. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to two equivalent Dy(1), two equivalent Dy(2), two equivalent Dy(3), one Gd(1), and two equivalent Ni(4) atoms. In the third Ni site, Ni(3) is bonded in a 9-coordinate geometry to one Dy(3), two equivalent Dy(1), two equivalent Dy(2), two equivalent Gd(1), and two equivalent Ni(1) atoms. In the fourth Ni site, Ni(4) is bonded in a 9-coordinate geometry to one Dy(2), two equivalent Dy(1), two equivalent Dy(3), two equivalent Gd(1), and two equivalent Ni(2) atoms.
Dy3GdNi4 crystallizes in the monoclinic Pm space group. There are three inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 7-coordinate geometry to one Ni(1), two equivalent Ni(2), two equivalent Ni(3), and two equivalent Ni(4) atoms. The Dy(1)-Ni(1) bond length is 2.84 Å. There is one shorter (2.83 Å) and one longer (2.90 Å) Dy(1)-Ni(2) bond length. Both Dy(1)-Ni(3) bond lengths are 2.87 Å. Both Dy(1)-Ni(4) bond lengths are 2.88 Å. In the second Dy site, Dy(2) is bonded in a 7-coordinate geometry to one Ni(4), two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(3) atoms. The Dy(2)-Ni(4) bond length is 2.83 Å. Both Dy(2)-Ni(1) bond lengths are 2.90 Å. Both Dy(2)-Ni(2) bond lengths are 2.87 Å. There is one shorter (2.81 Å) and one longer (2.93 Å) Dy(2)-Ni(3) bond length. In the third Dy site, Dy(3) is bonded in a 7-coordinate geometry to one Ni(3), two equivalent Ni(1), two equivalent Ni(2), and two equivalent Ni(4) atoms. The Dy(3)-Ni(3) bond length is 2.86 Å. Both Dy(3)-Ni(1) bond lengths are 2.90 Å. Both Dy(3)-Ni(2) bond lengths are 2.89 Å. There is one shorter (2.83 Å) and one longer (2.93 Å) Dy(3)-Ni(4) bond length. Gd(1) is bonded in a 7-coordinate geometry to one Ni(2), two equivalent Ni(1), two equivalent Ni(3), and two equivalent Ni(4) atoms. The Gd(1)-Ni(2) bond length is 2.88 Å. There is one shorter (2.84 Å) and one longer (2.91 Å) Gd(1)-Ni(1) bond length. Both Gd(1)-Ni(3) bond lengths are 2.92 Å. Both Gd(1)-Ni(4) bond lengths are 2.90 Å. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 9-coordinate geometry to one Dy(1), two equivalent Dy(2), two equivalent Dy(3), two equivalent Gd(1), and two equivalent Ni(3) atoms. Both Ni(1)-Ni(3) bond lengths are 2.53 Å. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to two equivalent Dy(1), two equivalent Dy(2), two equivalent Dy(3), one Gd(1), and two equivalent Ni(4) atoms. Both Ni(2)-Ni(4) bond lengths are 2.54 Å. In the third Ni site, Ni(3) is bonded in a 9-coordinate geometry to one Dy(3), two equivalent Dy(1), two equivalent Dy(2), two equivalent Gd(1), and two equivalent Ni(1) atoms. In the fourth Ni site, Ni(4) is bonded in a 9-coordinate geometry to one Dy(2), two equivalent Dy(1), two equivalent Dy(3), two equivalent Gd(1), and two equivalent Ni(2) atoms.