V2MnO8 crystallizes in the orthorhombic Pnma space group. V(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form VO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent V(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 16-31°. Mn(1) is bonded to one O(4), one O(5), two equivalent O(1), and two equivalent O(2) atoms to form MnO6 octahedra that share corners with four equivalent V(1)O4 tetrahedra. There are five inequivalent O sites. In the first O site, O(4) is bonded in a single-bond geometry to one Mn(1) atom. In the second O site, O(5) is bonded in a single-bond geometry to one Mn(1) atom. In the third O site, O(1) is bonded in a bent 150 degrees geometry to one V(1) and one Mn(1) atom. In the fourth O site, O(2) is bonded in a linear geometry to one V(1) and one Mn(1) atom. In the fifth O site, O(3) is bonded in a bent 150 degrees geometry to two equivalent V(1) atoms.
V2MnO8 crystallizes in the orthorhombic Pnma space group. V(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form VO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent V(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 16-31°. The V(1)-O(1) bond length is 1.70 Å. The V(1)-O(2) bond length is 1.68 Å. There is one shorter (1.79 Å) and one longer (1.81 Å) V(1)-O(3) bond length. Mn(1) is bonded to one O(4), one O(5), two equivalent O(1), and two equivalent O(2) atoms to form MnO6 octahedra that share corners with four equivalent V(1)O4 tetrahedra. The Mn(1)-O(4) bond length is 1.70 Å. The Mn(1)-O(5) bond length is 1.71 Å. Both Mn(1)-O(1) bond lengths are 1.93 Å. Both Mn(1)-O(2) bond lengths are 1.99 Å. There are five inequivalent O sites. In the first O site, O(4) is bonded in a single-bond geometry to one Mn(1) atom. In the second O site, O(5) is bonded in a single-bond geometry to one Mn(1) atom. In the third O site, O(1) is bonded in a bent 150 degrees geometry to one V(1) and one Mn(1) atom. In the fourth O site, O(2) is bonded in a linear geometry to one V(1) and one Mn(1) atom. In the fifth O site, O(3) is bonded in a bent 150 degrees geometry to two equivalent V(1) atoms.