TaMnO4 is Hydrophilite-derived structured and crystallizes in the triclinic P-1 space group. Ta(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted TaO6 octahedra that share corners with eight equivalent Mn(1)O6 octahedra and edges with two equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-55°. Mn(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form MnO6 octahedra that share corners with eight equivalent Ta(1)O6 octahedra and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-55°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Ta(1) and two equivalent Mn(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Ta(1) and two equivalent Mn(1) atoms. In the third O site, O(3) is bonded in a trigonal planar geometry to two equivalent Ta(1) and one Mn(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Ta(1) and one Mn(1) atom.
TaMnO4 is Hydrophilite-derived structured and crystallizes in the triclinic P-1 space group. Ta(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted TaO6 octahedra that share corners with eight equivalent Mn(1)O6 octahedra and edges with two equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-55°. The Ta(1)-O(1) bond length is 1.96 Å. The Ta(1)-O(2) bond length is 1.90 Å. There is one shorter (2.04 Å) and one longer (2.08 Å) Ta(1)-O(3) bond length. There is one shorter (1.92 Å) and one longer (2.11 Å) Ta(1)-O(4) bond length. Mn(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form MnO6 octahedra that share corners with eight equivalent Ta(1)O6 octahedra and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-55°. The Mn(1)-O(3) bond length is 1.93 Å. The Mn(1)-O(4) bond length is 2.18 Å. There is one shorter (1.95 Å) and one longer (1.96 Å) Mn(1)-O(1) bond length. There is one shorter (1.90 Å) and one longer (2.28 Å) Mn(1)-O(2) bond length. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Ta(1) and two equivalent Mn(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Ta(1) and two equivalent Mn(1) atoms. In the third O site, O(3) is bonded in a trigonal planar geometry to two equivalent Ta(1) and one Mn(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Ta(1) and one Mn(1) atom.