TbAsO4 is Zircon structured and crystallizes in the tetragonal I4_1/amd space group. Tb(1) is bonded in a 8-coordinate geometry to eight equivalent O(1) atoms. As(1) is bonded in a tetrahedral geometry to four equivalent O(1) atoms. O(1) is bonded in a 3-coordinate geometry to two equivalent Tb(1) and one As(1) atom.
TbAsO4 is Zircon structured and crystallizes in the tetragonal I4_1/amd space group. Tb(1) is bonded in a 8-coordinate geometry to eight equivalent O(1) atoms. There are four shorter (2.31 Å) and four longer (2.43 Å) Tb(1)-O(1) bond lengths. As(1) is bonded in a tetrahedral geometry to four equivalent O(1) atoms. All As(1)-O(1) bond lengths are 1.70 Å. O(1) is bonded in a 3-coordinate geometry to two equivalent Tb(1) and one As(1) atom.