The structure described by MgV4MnO12 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(10), one O(12), one O(2), one O(3), one O(5), and one O(6) atom to form distorted MgO6 pentagonal pyramids that share  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(3)O6 octahedra, edges with two equivalent V(1)O6 octahedra, and  a faceface with one V(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 59-66°. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(11), one O(2), one O(3), one O(5), and one O(8) atom to form distorted VO6 octahedra that share corners with two equivalent V(3)O6 octahedra, corners with four equivalent V(4)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, and edges with two equivalent Mg(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 33-42°. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(1), one O(12), one O(4), one O(6), one O(7), and one O(9) atom. In the third V site, V(3) is bonded to one O(1), one O(11), one O(12), one O(2), one O(4), and one O(9) atom to form distorted VO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent V(1)O6 octahedra, corners with two equivalent Mg(1)O6 pentagonal pyramids, and  a faceface with one Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-56°. In the fourth V site, V(4) is bonded to one O(10), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form distorted VO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with four equivalent V(1)O6 octahedra,  a cornercorner with one Mg(1)O6 pentagonal pyramid, and  a faceface with one Mg(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 33-59°. Mn(1) is bonded to one O(1), one O(11), one O(4), one O(7), one O(8), and one O(9) atom to form distorted MnO6 octahedra that share  a cornercorner with one V(3)O6 octahedra, corners with two equivalent V(4)O6 octahedra,  an edgeedge with one V(1)O6 octahedra, and  a faceface with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-59°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one V(2), one V(3), and one Mn(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(1), one V(1), and one V(3) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Mg(1), one V(1), and one V(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one V(2), one V(3), and one Mn(1) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Mg(1), one V(1), and one V(4) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Mg(1), one V(2), and one V(4) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one V(2), one V(4), and one Mn(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one V(1), one V(4), and one Mn(1) atom. In the ninth O site, O(9) is bonded in a distorted T-shaped geometry to one V(2), one V(3), and one Mn(1) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(1), and one V(4) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one V(1), one V(3), and one Mn(1) atom. In the twelfth O site, O(12) is bonded in a distorted T-shaped geometry to one Mg(1), one V(2), and one V(3) atom. is represented by the CIF file [CIF]
data_MgMnV4O12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.373
_cell_length_b   10.874
_cell_length_c   9.690
_cell_angle_alpha   27.667
_cell_angle_beta   51.092
_cell_angle_gamma   55.938
_symmetry_Int_Tables_number   1
_cell_volume   204.572
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Mg  Mg0  1  0.283  0.500  0.283  1.0
  Mn  Mn1  1  0.284  0.011  0.286  1.0
  V  V2  1  0.004  0.004  0.996  1.0
  V  V3  1  0.969  0.498  0.020  1.0
  V  V4  1  0.489  0.994  0.515  1.0
  V  V5  1  0.502  0.510  0.497  1.0
  O  O6  1  0.323  0.279  0.146  1.0
  O  O7  1  0.244  0.118  0.610  1.0
  O  O8  1  0.140  0.304  0.714  1.0
  O  O9  1  0.877  0.180  0.231  1.0
  O  O10  1  0.318  0.792  0.139  1.0
  O  O11  1  0.724  0.402  0.332  1.0
  O  O12  1  0.247  0.649  0.572  1.0
  O  O13  1  0.602  0.203  0.841  1.0
  O  O14  1  0.150  0.781  0.745  1.0
  O  O15  1  0.852  0.689  0.229  1.0
  O  O16  1  0.716  0.908  0.315  1.0
  O  O17  1  0.623  0.672  0.872  1.0
[/CIF]
.
The structure described by MgV4MnO12 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(10), one O(12), one O(2), one O(3), one O(5), and one O(6) atom to form distorted MgO6 pentagonal pyramids that share  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(3)O6 octahedra, edges with two equivalent V(1)O6 octahedra, and  a faceface with one V(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 59-66°. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(11), one O(2), one O(3), one O(5), and one O(8) atom to form distorted VO6 octahedra that share corners with two equivalent V(3)O6 octahedra, corners with four equivalent V(4)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, and edges with two equivalent Mg(1)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 33-42°. In the second V site, V(2) is bonded in a 6-coordinate geometry to one O(1), one O(12), one O(4), one O(6), one O(7), and one O(9) atom. In the third V site, V(3) is bonded to one O(1), one O(11), one O(12), one O(2), one O(4), and one O(9) atom to form distorted VO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent V(1)O6 octahedra, corners with two equivalent Mg(1)O6 pentagonal pyramids, and  a faceface with one Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-56°. In the fourth V site, V(4) is bonded to one O(10), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form distorted VO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with four equivalent V(1)O6 octahedra,  a cornercorner with one Mg(1)O6 pentagonal pyramid, and  a faceface with one Mg(1)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 33-59°. Mn(1) is bonded to one O(1), one O(11), one O(4), one O(7), one O(8), and one O(9) atom to form distorted MnO6 octahedra that share  a cornercorner with one V(3)O6 octahedra, corners with two equivalent V(4)O6 octahedra,  an edgeedge with one V(1)O6 octahedra, and  a faceface with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-59°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one V(2), one V(3), and one Mn(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(1), one V(1), and one V(3) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Mg(1), one V(1), and one V(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one V(2), one V(3), and one Mn(1) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Mg(1), one V(1), and one V(4) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Mg(1), one V(2), and one V(4) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one V(2), one V(4), and one Mn(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one V(1), one V(4), and one Mn(1) atom. In the ninth O site, O(9) is bonded in a distorted T-shaped geometry to one V(2), one V(3), and one Mn(1) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(1), and one V(4) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one V(1), one V(3), and one Mn(1) atom. In the twelfth O site, O(12) is bonded in a distorted T-shaped geometry to one Mg(1), one V(2), and one V(3) atom. is represented by the CIF file [CIF]
data_MgMnV4O12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.373
_cell_length_b   10.874
_cell_length_c   9.690
_cell_angle_alpha   27.667
_cell_angle_beta   51.092
_cell_angle_gamma   55.938
_symmetry_Int_Tables_number   1
_cell_volume   204.572
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Mg  Mg0  1  0.283  0.500  0.283  1.0
  Mn  Mn1  1  0.284  0.011  0.286  1.0
  V  V2  1  0.004  0.004  0.996  1.0
  V  V3  1  0.969  0.498  0.020  1.0
  V  V4  1  0.489  0.994  0.515  1.0
  V  V5  1  0.502  0.510  0.497  1.0
  O  O6  1  0.323  0.279  0.146  1.0
  O  O7  1  0.244  0.118  0.610  1.0
  O  O8  1  0.140  0.304  0.714  1.0
  O  O9  1  0.877  0.180  0.231  1.0
  O  O10  1  0.318  0.792  0.139  1.0
  O  O11  1  0.724  0.402  0.332  1.0
  O  O12  1  0.247  0.649  0.572  1.0
  O  O13  1  0.602  0.203  0.841  1.0
  O  O14  1  0.150  0.781  0.745  1.0
  O  O15  1  0.852  0.689  0.229  1.0
  O  O16  1  0.716  0.908  0.315  1.0
  O  O17  1  0.623  0.672  0.872  1.0
[/CIF]
.