Tb11Ni4In9 crystallizes in the orthorhombic Cmmm space group. There are five inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 8-coordinate geometry to two equivalent Ni(1), two equivalent In(2), and four equivalent In(1) atoms. In the second Tb site, Tb(2) is bonded in a 8-coordinate geometry to four equivalent In(1) and four equivalent In(2) atoms. In the third Tb site, Tb(3) is bonded in a 10-coordinate geometry to four equivalent Ni(1), two equivalent In(3), and four equivalent In(1) atoms. In the fourth Tb site, Tb(4) is bonded in a 10-coordinate geometry to four equivalent Ni(1), two equivalent In(3), and four equivalent In(2) atoms. In the fifth Tb site, Tb(5) is bonded in a distorted body-centered cubic geometry to eight equivalent In(2) atoms. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Tb(1), two equivalent Tb(3), two equivalent Tb(4), one In(1), one In(2), and one In(3) atom. There are three inequivalent In sites. In the first In site, In(1) is bonded in a 10-coordinate geometry to two equivalent Tb(2), two equivalent Tb(3), four equivalent Tb(1), one Ni(1), and one In(1) atom. In the second In site, In(2) is bonded in a 10-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), two equivalent Tb(4), two equivalent Tb(5), one Ni(1), and one In(2) atom. In the third In site, In(3) is bonded to four equivalent Tb(3), four equivalent Tb(4), and four equivalent Ni(1) atoms to form face-sharing InTb8Ni4 cuboctahedra.
Tb11Ni4In9 crystallizes in the orthorhombic Cmmm space group. There are five inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 8-coordinate geometry to two equivalent Ni(1), two equivalent In(2), and four equivalent In(1) atoms. Both Tb(1)-Ni(1) bond lengths are 2.78 Å. Both Tb(1)-In(2) bond lengths are 3.17 Å. There are two shorter (3.16 Å) and two longer (3.44 Å) Tb(1)-In(1) bond lengths. In the second Tb site, Tb(2) is bonded in a 8-coordinate geometry to four equivalent In(1) and four equivalent In(2) atoms. All Tb(2)-In(1) bond lengths are 3.27 Å. All Tb(2)-In(2) bond lengths are 3.41 Å. In the third Tb site, Tb(3) is bonded in a 10-coordinate geometry to four equivalent Ni(1), two equivalent In(3), and four equivalent In(1) atoms. All Tb(3)-Ni(1) bond lengths are 2.92 Å. Both Tb(3)-In(3) bond lengths are 3.23 Å. All Tb(3)-In(1) bond lengths are 3.36 Å. In the fourth Tb site, Tb(4) is bonded in a 10-coordinate geometry to four equivalent Ni(1), two equivalent In(3), and four equivalent In(2) atoms. All Tb(4)-Ni(1) bond lengths are 2.86 Å. Both Tb(4)-In(3) bond lengths are 3.29 Å. All Tb(4)-In(2) bond lengths are 3.39 Å. In the fifth Tb site, Tb(5) is bonded in a distorted body-centered cubic geometry to eight equivalent In(2) atoms. All Tb(5)-In(2) bond lengths are 3.23 Å. Ni(1) is bonded in a 9-coordinate geometry to two equivalent Tb(1), two equivalent Tb(3), two equivalent Tb(4), one In(1), one In(2), and one In(3) atom. The Ni(1)-In(1) bond length is 2.98 Å. The Ni(1)-In(2) bond length is 3.01 Å. The Ni(1)-In(3) bond length is 3.09 Å. There are three inequivalent In sites. In the first In site, In(1) is bonded in a 10-coordinate geometry to two equivalent Tb(2), two equivalent Tb(3), four equivalent Tb(1), one Ni(1), and one In(1) atom. The In(1)-In(1) bond length is 3.04 Å. In the second In site, In(2) is bonded in a 10-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), two equivalent Tb(4), two equivalent Tb(5), one Ni(1), and one In(2) atom. The In(2)-In(2) bond length is 3.04 Å. In the third In site, In(3) is bonded to four equivalent Tb(3), four equivalent Tb(4), and four equivalent Ni(1) atoms to form face-sharing InTb8Ni4 cuboctahedra.