Dy2(RhAl3)3 crystallizes in the orthorhombic Cmcm space group. Dy(1) is bonded in a 17-coordinate geometry to two equivalent Rh(2), four equivalent Rh(1), one Al(1), two equivalent Al(3), two equivalent Al(4), and six equivalent Al(2) atoms. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 8-coordinate geometry to four equivalent Dy(1), two equivalent Al(3), two equivalent Al(4), and four equivalent Al(2) atoms. In the second Rh site, Rh(2) is bonded in a 8-coordinate geometry to four equivalent Dy(1), two equivalent Al(1), two equivalent Al(3), and four equivalent Al(2) atoms. There are four inequivalent Al sites. In the first Al site, Al(1) is bonded in a 2-coordinate geometry to two equivalent Dy(1) and two equivalent Rh(2) atoms. In the second Al site, Al(2) is bonded in a 3-coordinate geometry to three equivalent Dy(1), one Rh(2), and two equivalent Rh(1) atoms. In the third Al site, Al(3) is bonded in a 3-coordinate geometry to two equivalent Dy(1), one Rh(2), and two equivalent Rh(1) atoms. In the fourth Al site, Al(4) is bonded in a 2-coordinate geometry to two equivalent Dy(1) and two equivalent Rh(1) atoms.
Dy2(RhAl3)3 crystallizes in the orthorhombic Cmcm space group. Dy(1) is bonded in a 17-coordinate geometry to two equivalent Rh(2), four equivalent Rh(1), one Al(1), two equivalent Al(3), two equivalent Al(4), and six equivalent Al(2) atoms. Both Dy(1)-Rh(2) bond lengths are 3.39 Å. There are two shorter (3.43 Å) and two longer (3.45 Å) Dy(1)-Rh(1) bond lengths. The Dy(1)-Al(1) bond length is 3.06 Å. Both Dy(1)-Al(3) bond lengths are 3.09 Å. There is one shorter (3.03 Å) and one longer (3.14 Å) Dy(1)-Al(4) bond length. There are a spread of Dy(1)-Al(2) bond distances ranging from 3.03-3.05 Å. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 8-coordinate geometry to four equivalent Dy(1), two equivalent Al(3), two equivalent Al(4), and four equivalent Al(2) atoms. Both Rh(1)-Al(3) bond lengths are 2.60 Å. Both Rh(1)-Al(4) bond lengths are 2.55 Å. There are two shorter (2.54 Å) and two longer (2.60 Å) Rh(1)-Al(2) bond lengths. In the second Rh site, Rh(2) is bonded in a 8-coordinate geometry to four equivalent Dy(1), two equivalent Al(1), two equivalent Al(3), and four equivalent Al(2) atoms. Both Rh(2)-Al(1) bond lengths are 2.55 Å. Both Rh(2)-Al(3) bond lengths are 2.57 Å. All Rh(2)-Al(2) bond lengths are 2.61 Å. There are four inequivalent Al sites. In the first Al site, Al(1) is bonded in a 2-coordinate geometry to two equivalent Dy(1) and two equivalent Rh(2) atoms. In the second Al site, Al(2) is bonded in a 3-coordinate geometry to three equivalent Dy(1), one Rh(2), and two equivalent Rh(1) atoms. In the third Al site, Al(3) is bonded in a 3-coordinate geometry to two equivalent Dy(1), one Rh(2), and two equivalent Rh(1) atoms. In the fourth Al site, Al(4) is bonded in a 2-coordinate geometry to two equivalent Dy(1) and two equivalent Rh(1) atoms.