FeTaO4 is Hydrophilite-derived structured and crystallizes in the monoclinic P2/c space group. Ta(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form distorted 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 50-54°. Fe(1) is bonded to two equivalent O(2) and four equivalent O(1) 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 50-54°. There are two inequivalent O sites. In the first O site, O(2) is bonded in a trigonal planar 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 one Ta(1) and two equivalent Fe(1) atoms.
FeTaO4 is Hydrophilite-derived structured and crystallizes in the monoclinic P2/c space group. Ta(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form distorted 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 50-54°. Both Ta(1)-O(1) bond lengths are 1.92 Å. There are two shorter (1.99 Å) and two longer (2.14 Å) Ta(1)-O(2) bond lengths. Fe(1) is bonded to two equivalent O(2) and four equivalent O(1) 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 50-54°. Both Fe(1)-O(2) bond lengths are 2.02 Å. There are two shorter (2.03 Å) and two longer (2.10 Å) Fe(1)-O(1) bond lengths. There are two inequivalent O sites. In the first O site, O(2) is bonded in a trigonal planar 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 one Ta(1) and two equivalent Fe(1) atoms.