TaAsO4 crystallizes in the orthorhombic Cmc2_1 space group. Ta(1) is bonded to one O(2), one O(3), two equivalent O(1), and two equivalent O(4) atoms to form corner-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles range from 17-28°. As(1) is bonded in a distorted square co-planar geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to two equivalent Ta(1) and one As(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Ta(1) and one As(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Ta(1) and two equivalent As(1) atoms. In the fourth O site, O(4) is bonded in a linear geometry to two equivalent Ta(1) atoms.
TaAsO4 crystallizes in the orthorhombic Cmc2_1 space group. Ta(1) is bonded to one O(2), one O(3), two equivalent O(1), and two equivalent O(4) atoms to form corner-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles range from 17-28°. The Ta(1)-O(2) bond length is 1.99 Å. The Ta(1)-O(3) bond length is 2.03 Å. Both Ta(1)-O(1) bond lengths are 2.03 Å. There is one shorter (1.91 Å) and one longer (2.03 Å) Ta(1)-O(4) bond length. As(1) is bonded in a distorted square co-planar geometry to one O(1), one O(2), and two equivalent O(3) atoms. The As(1)-O(1) bond length is 2.07 Å. The As(1)-O(2) bond length is 1.79 Å. Both As(1)-O(3) bond lengths are 2.05 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to two equivalent Ta(1) and one As(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Ta(1) and one As(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Ta(1) and two equivalent As(1) atoms. In the fourth O site, O(4) is bonded in a linear geometry to two equivalent Ta(1) atoms.