Tb3Ga5 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 9-coordinate geometry to one Ga(2), two equivalent Ga(3), two equivalent Ga(4), and four equivalent Ga(1) atoms. In the second Tb site, Tb(2) is bonded in a 10-coordinate geometry to two equivalent Ga(2), two equivalent Ga(3), two equivalent Ga(4), and four equivalent Ga(1) atoms. There are four inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to two equivalent Tb(1), four equivalent Tb(2), one Ga(1), one Ga(2), one Ga(3), and one Ga(4) atom. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to one Tb(1), four equivalent Tb(2), one Ga(4), two equivalent Ga(1), and two equivalent Ga(3) atoms. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to two equivalent Tb(1), four equivalent Tb(2), two equivalent Ga(1), and two equivalent Ga(2) atoms. In the fourth Ga site, Ga(4) is bonded in a 9-coordinate geometry to two equivalent Tb(1), four equivalent Tb(2), one Ga(2), and two equivalent Ga(1) atoms.
Tb3Ga5 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 9-coordinate geometry to one Ga(2), two equivalent Ga(3), two equivalent Ga(4), and four equivalent Ga(1) atoms. The Tb(1)-Ga(2) bond length is 2.85 Å. There is one shorter (3.05 Å) and one longer (3.29 Å) Tb(1)-Ga(3) bond length. There is one shorter (3.02 Å) and one longer (3.16 Å) Tb(1)-Ga(4) bond length. There are two shorter (2.94 Å) and two longer (3.18 Å) Tb(1)-Ga(1) bond lengths. In the second Tb site, Tb(2) is bonded in a 10-coordinate geometry to two equivalent Ga(2), two equivalent Ga(3), two equivalent Ga(4), and four equivalent Ga(1) atoms. There is one shorter (3.06 Å) and one longer (3.12 Å) Tb(2)-Ga(2) bond length. There is one shorter (3.01 Å) and one longer (3.26 Å) Tb(2)-Ga(3) bond length. There is one shorter (2.98 Å) and one longer (3.32 Å) Tb(2)-Ga(4) bond length. There are a spread of Tb(2)-Ga(1) bond distances ranging from 3.06-3.26 Å. There are four inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 10-coordinate geometry to two equivalent Tb(1), four equivalent Tb(2), one Ga(1), one Ga(2), one Ga(3), and one Ga(4) atom. The Ga(1)-Ga(1) bond length is 2.79 Å. The Ga(1)-Ga(2) bond length is 2.86 Å. The Ga(1)-Ga(3) bond length is 2.62 Å. The Ga(1)-Ga(4) bond length is 2.63 Å. In the second Ga site, Ga(2) is bonded in a 10-coordinate geometry to one Tb(1), four equivalent Tb(2), one Ga(4), two equivalent Ga(1), and two equivalent Ga(3) atoms. The Ga(2)-Ga(4) bond length is 2.61 Å. There is one shorter (2.88 Å) and one longer (3.09 Å) Ga(2)-Ga(3) bond length. In the third Ga site, Ga(3) is bonded in a 10-coordinate geometry to two equivalent Tb(1), four equivalent Tb(2), two equivalent Ga(1), and two equivalent Ga(2) atoms. In the fourth Ga site, Ga(4) is bonded in a 9-coordinate geometry to two equivalent Tb(1), four equivalent Tb(2), one Ga(2), and two equivalent Ga(1) atoms.