Tb(BO2)3 crystallizes in the orthorhombic Ibam space group. Tb(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a tetrahedral geometry to four equivalent O(1) atoms. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(2) and two equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Tb(1), one B(1), and one B(2) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Tb(1) and one B(2) atom.
Tb(BO2)3 crystallizes in the orthorhombic Ibam space group. Tb(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. All Tb(1)-O(1) bond lengths are 2.39 Å. All Tb(1)-O(2) bond lengths are 2.39 Å. There are two inequivalent B sites. In the first B site, B(1) is bonded in a tetrahedral geometry to four equivalent O(1) atoms. All B(1)-O(1) bond lengths are 1.46 Å. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(2) and two equivalent O(1) atoms. The B(2)-O(2) bond length is 1.34 Å. Both B(2)-O(1) bond lengths are 1.39 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Tb(1), one B(1), and one B(2) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Tb(1) and one B(2) atom.