V4MnO12 crystallizes in the monoclinic C2 space group. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form VO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra and corners with two equivalent V(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 48°. In the second V site, V(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom 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 29-51°. Mn(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form MnO6 octahedra that share corners with two equivalent V(1)O4 tetrahedra and corners with four equivalent V(2)O4 tetrahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one V(1) and one Mn(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one V(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one V(2) and one Mn(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one V(1) and one V(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one V(1) and one V(2) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one V(2) and one Mn(1) atom.
V4MnO12 crystallizes in the monoclinic C2 space group. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form VO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra and corners with two equivalent V(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 48°. The V(1)-O(1) bond length is 1.74 Å. The V(1)-O(2) bond length is 1.62 Å. The V(1)-O(4) bond length is 1.84 Å. The V(1)-O(5) bond length is 1.85 Å. In the second V site, V(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom 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 29-51°. The V(2)-O(3) bond length is 1.71 Å. The V(2)-O(4) bond length is 1.78 Å. The V(2)-O(5) bond length is 1.76 Å. The V(2)-O(6) bond length is 1.73 Å. Mn(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form MnO6 octahedra that share corners with two equivalent V(1)O4 tetrahedra and corners with four equivalent V(2)O4 tetrahedra. Both Mn(1)-O(1) bond lengths are 1.89 Å. Both Mn(1)-O(3) bond lengths are 1.95 Å. Both Mn(1)-O(6) bond lengths are 1.93 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one V(1) and one Mn(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one V(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one V(2) and one Mn(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one V(1) and one V(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one V(1) and one V(2) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one V(2) and one Mn(1) atom.