SrTa2O6 crystallizes in the orthorhombic Pnma space group. Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), two equivalent O(4), and four equivalent O(3) atoms. Ta(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form a mixture of corner and edge-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles range from 22-41°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Sr(1) and two equivalent Ta(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Sr(1) and two equivalent Ta(1) atoms. In the third O site, O(3) is bonded to two equivalent Sr(1) and two equivalent Ta(1) atoms to form a mixture of distorted corner and edge-sharing OSr2Ta2 tetrahedra. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Sr(1) and two equivalent Ta(1) atoms.
SrTa2O6 crystallizes in the orthorhombic Pnma space group. Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), two equivalent O(4), and four equivalent O(3) atoms. The Sr(1)-O(1) bond length is 2.61 Å. The Sr(1)-O(2) bond length is 2.70 Å. Both Sr(1)-O(4) bond lengths are 2.66 Å. There are two shorter (2.54 Å) and two longer (2.58 Å) Sr(1)-O(3) bond lengths. Ta(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form a mixture of corner and edge-sharing TaO6 octahedra. The corner-sharing octahedral tilt angles range from 22-41°. The Ta(1)-O(1) bond length is 1.97 Å. The Ta(1)-O(2) bond length is 1.98 Å. There is one shorter (1.95 Å) and one longer (2.13 Å) Ta(1)-O(3) bond length. There is one shorter (1.91 Å) and one longer (2.03 Å) Ta(1)-O(4) bond length. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Sr(1) and two equivalent Ta(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Sr(1) and two equivalent Ta(1) atoms. In the third O site, O(3) is bonded to two equivalent Sr(1) and two equivalent Ta(1) atoms to form a mixture of distorted corner and edge-sharing OSr2Ta2 tetrahedra. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Sr(1) and two equivalent Ta(1) atoms.