FeTaO4 is Hydrophilite-derived structured and crystallizes in the orthorhombic Cmmm space group. Ta(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form TaO6 octahedra that share corners with eight equivalent Fe(1)O6 octahedra and edges with two equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. 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 Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Ta(1) and one Fe(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Ta(1) and two equivalent Fe(1) atoms.
FeTaO4 is Hydrophilite-derived structured and crystallizes in the orthorhombic Cmmm space group. Ta(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form TaO6 octahedra that share corners with eight equivalent Fe(1)O6 octahedra and edges with two equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. Both Ta(1)-O(2) bond lengths are 1.98 Å. All Ta(1)-O(1) bond lengths are 2.01 Å. 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 Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-50°. Both Fe(1)-O(1) bond lengths are 2.09 Å. All Fe(1)-O(2) bond lengths are 2.02 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Ta(1) and one Fe(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Ta(1) and two equivalent Fe(1) atoms.