TbFe2Al10 crystallizes in the orthorhombic Cmcm space group. Tb(1) is bonded in a 20-coordinate geometry to four equivalent Fe(1), two equivalent Al(2), two equivalent Al(4), four equivalent Al(1), four equivalent Al(3), and four equivalent Al(5) atoms. Fe(1) is bonded in a 10-coordinate geometry to two equivalent Tb(1), two equivalent Al(1), two equivalent Al(2), two equivalent Al(3), two equivalent Al(4), and two equivalent Al(5) atoms. There are five inequivalent Al sites. In the first Al site, Al(1) is bonded in a 2-coordinate geometry to two equivalent Tb(1), two equivalent Fe(1), two equivalent Al(2), two equivalent Al(3), two equivalent Al(4), and two equivalent Al(5) atoms. In the second Al site, Al(2) is bonded in a 12-coordinate geometry to one Tb(1), two equivalent Fe(1), one Al(2), two equivalent Al(1), two equivalent Al(3), two equivalent Al(4), and two equivalent Al(5) atoms. In the third Al site, Al(3) is bonded in a 12-coordinate geometry to two equivalent Tb(1), two equivalent Fe(1), one Al(3), one Al(4), two equivalent Al(1), two equivalent Al(2), and two equivalent Al(5) atoms. In the fourth Al site, Al(4) is bonded in a 11-coordinate geometry to one Tb(1), two equivalent Fe(1), one Al(3), one Al(4), two equivalent Al(1), two equivalent Al(2), and two equivalent Al(5) atoms. In the fifth Al site, Al(5) is bonded in a 12-coordinate geometry to two equivalent Tb(1), two equivalent Fe(1), two equivalent Al(1), two equivalent Al(2), two equivalent Al(3), and two equivalent Al(4) atoms.
TbFe2Al10 crystallizes in the orthorhombic Cmcm space group. Tb(1) is bonded in a 20-coordinate geometry to four equivalent Fe(1), two equivalent Al(2), two equivalent Al(4), four equivalent Al(1), four equivalent Al(3), and four equivalent Al(5) atoms. All Tb(1)-Fe(1) bond lengths are 3.38 Å. Both Tb(1)-Al(2) bond lengths are 3.09 Å. Both Tb(1)-Al(4) bond lengths are 3.08 Å. There are two shorter (3.11 Å) and two longer (3.59 Å) Tb(1)-Al(1) bond lengths. There are two shorter (3.11 Å) and two longer (3.18 Å) Tb(1)-Al(3) bond lengths. All Tb(1)-Al(5) bond lengths are 3.25 Å. Fe(1) is bonded in a 10-coordinate geometry to two equivalent Tb(1), two equivalent Al(1), two equivalent Al(2), two equivalent Al(3), two equivalent Al(4), and two equivalent Al(5) atoms. Both Fe(1)-Al(1) bond lengths are 2.49 Å. Both Fe(1)-Al(2) bond lengths are 2.68 Å. Both Fe(1)-Al(3) bond lengths are 2.54 Å. Both Fe(1)-Al(4) bond lengths are 2.59 Å. Both Fe(1)-Al(5) bond lengths are 2.53 Å. There are five inequivalent Al sites. In the first Al site, Al(1) is bonded in a 2-coordinate geometry to two equivalent Tb(1), two equivalent Fe(1), two equivalent Al(2), two equivalent Al(3), two equivalent Al(4), and two equivalent Al(5) atoms. There is one shorter (2.56 Å) and one longer (2.80 Å) Al(1)-Al(2) bond length. Both Al(1)-Al(3) bond lengths are 2.77 Å. Both Al(1)-Al(4) bond lengths are 2.69 Å. Both Al(1)-Al(5) bond lengths are 2.66 Å. In the second Al site, Al(2) is bonded in a 12-coordinate geometry to one Tb(1), two equivalent Fe(1), one Al(2), two equivalent Al(1), two equivalent Al(3), two equivalent Al(4), and two equivalent Al(5) atoms. The Al(2)-Al(2) bond length is 2.67 Å. Both Al(2)-Al(3) bond lengths are 2.85 Å. Both Al(2)-Al(4) bond lengths are 2.99 Å. Both Al(2)-Al(5) bond lengths are 2.79 Å. In the third Al site, Al(3) is bonded in a 12-coordinate geometry to two equivalent Tb(1), two equivalent Fe(1), one Al(3), one Al(4), two equivalent Al(1), two equivalent Al(2), and two equivalent Al(5) atoms. The Al(3)-Al(3) bond length is 2.72 Å. The Al(3)-Al(4) bond length is 2.54 Å. Both Al(3)-Al(5) bond lengths are 2.72 Å. In the fourth Al site, Al(4) is bonded in a 11-coordinate geometry to one Tb(1), two equivalent Fe(1), one Al(3), one Al(4), two equivalent Al(1), two equivalent Al(2), and two equivalent Al(5) atoms. The Al(4)-Al(4) bond length is 2.67 Å. Both Al(4)-Al(5) bond lengths are 2.76 Å. In the fifth Al site, Al(5) is bonded in a 12-coordinate geometry to two equivalent Tb(1), two equivalent Fe(1), two equivalent Al(1), two equivalent Al(2), two equivalent Al(3), and two equivalent Al(4) atoms.