FeTa2O6 is Rutile-derived structured and crystallizes in the tetragonal P4_2/mnm space group. Ta(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form TaO6 octahedra that share corners with four equivalent Ta(1)O6 octahedra, corners with four equivalent Fe(1)O6 octahedra,  an edgeedge with one Ta(1)O6 octahedra, and  an edgeedge with one Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-50°. Fe(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form FeO6 octahedra that share corners with eight equivalent Ta(1)O6 octahedra and edges with two equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-50°. There are two inequivalent O sites. In the first O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Ta(1) and one Fe(1) atom. In the second O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Ta(1) and one Fe(1) atom.
FeTa2O6 is Rutile-derived structured and crystallizes in the tetragonal P4_2/mnm space group. Ta(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form TaO6 octahedra that share corners with four equivalent Ta(1)O6 octahedra, corners with four equivalent Fe(1)O6 octahedra,  an edgeedge with one Ta(1)O6 octahedra, and  an edgeedge with one Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-50°. Both Ta(1)-O(1) bond lengths are 2.00 Å. There are two shorter (1.97 Å) and two longer (2.00 Å) Ta(1)-O(2) bond lengths. Fe(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form FeO6 octahedra that share corners with eight equivalent Ta(1)O6 octahedra and edges with two equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-50°. Both Fe(1)-O(1) bond lengths are 2.07 Å. All Fe(1)-O(2) bond lengths are 2.05 Å. There are two inequivalent O sites. In the first O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Ta(1) and one Fe(1) atom. In the second O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Ta(1) and one Fe(1) atom.