Tb(BiO2)3 is Ilmenite-like structured and crystallizes in the cubic I2_13 space group. Tb(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form TbO6 octahedra that share corners with three equivalent Bi(1)O6 octahedra, corners with three equivalent Bi(2)O6 octahedra, edges with three equivalent Bi(1)O6 octahedra, and edges with three equivalent Bi(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-54°. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form distorted BiO6 octahedra that share corners with two equivalent Tb(1)O6 octahedra, corners with four equivalent Bi(1)O6 octahedra, edges with two equivalent Tb(1)O6 octahedra, and edges with four equivalent Bi(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-55°. In the second Bi site, Bi(2) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form distorted BiO6 octahedra that share corners with two equivalent Tb(1)O6 octahedra, corners with four equivalent Bi(2)O6 octahedra, edges with two equivalent Tb(1)O6 octahedra, and edges with four equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-57°. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Tb(1), one Bi(2), and two equivalent Bi(1) atoms to form a mixture of distorted corner and edge-sharing OTbBi3 trigonal pyramids. In the second O site, O(2) is bonded to one Tb(1), one Bi(1), and two equivalent Bi(2) atoms to form a mixture of distorted corner and edge-sharing OTbBi3 trigonal pyramids.
Tb(BiO2)3 is Ilmenite-like structured and crystallizes in the cubic I2_13 space group. Tb(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form TbO6 octahedra that share corners with three equivalent Bi(1)O6 octahedra, corners with three equivalent Bi(2)O6 octahedra, edges with three equivalent Bi(1)O6 octahedra, and edges with three equivalent Bi(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-54°. All Tb(1)-O(1) bond lengths are 2.34 Å. All Tb(1)-O(2) bond lengths are 2.32 Å. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form distorted BiO6 octahedra that share corners with two equivalent Tb(1)O6 octahedra, corners with four equivalent Bi(1)O6 octahedra, edges with two equivalent Tb(1)O6 octahedra, and edges with four equivalent Bi(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-55°. Both Bi(1)-O(2) bond lengths are 2.48 Å. There are two shorter (2.35 Å) and two longer (2.41 Å) Bi(1)-O(1) bond lengths. In the second Bi site, Bi(2) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form distorted BiO6 octahedra that share corners with two equivalent Tb(1)O6 octahedra, corners with four equivalent Bi(2)O6 octahedra, edges with two equivalent Tb(1)O6 octahedra, and edges with four equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-57°. Both Bi(2)-O(1) bond lengths are 2.47 Å. There are two shorter (2.36 Å) and two longer (2.41 Å) Bi(2)-O(2) bond lengths. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Tb(1), one Bi(2), and two equivalent Bi(1) atoms to form a mixture of distorted corner and edge-sharing OTbBi3 trigonal pyramids. In the second O site, O(2) is bonded to one Tb(1), one Bi(1), and two equivalent Bi(2) atoms to form a mixture of distorted corner and edge-sharing OTbBi3 trigonal pyramids.