Ta2O5 crystallizes in the orthorhombic Pmmn space group. Ta(1) is bonded to one O(3), two equivalent O(2), and three equivalent O(1) atoms to form a mixture of edge and corner-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles range from 2-30°. There are three inequivalent O sites. In the first O site, O(2) is bonded in a linear geometry to two equivalent Ta(1) atoms. In the second O site, O(3) is bonded in a linear geometry to two equivalent Ta(1) atoms. In the third O site, O(1) is bonded in a 3-coordinate geometry to three equivalent Ta(1) atoms.
Ta2O5 crystallizes in the orthorhombic Pmmn space group. Ta(1) is bonded to one O(3), two equivalent O(2), and three equivalent O(1) atoms to form a mixture of edge and corner-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles range from 2-30°. The Ta(1)-O(3) bond length is 1.90 Å. There is one shorter (1.88 Å) and one longer (2.00 Å) Ta(1)-O(2) bond length. There are two shorter (1.99 Å) and one longer (2.21 Å) Ta(1)-O(1) bond length. There are three inequivalent O sites. In the first O site, O(2) is bonded in a linear geometry to two equivalent Ta(1) atoms. In the second O site, O(3) is bonded in a linear geometry to two equivalent Ta(1) atoms. In the third O site, O(1) is bonded in a 3-coordinate geometry to three equivalent Ta(1) atoms.