The crystal structure described by MgV2Mn2(CuO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(6), and one O(8) atom to form distorted MgO6 octahedra that share corners with two equivalent V(1)O4 tetrahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(4), one O(5), and one O(7) atom to form VO4 tetrahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with three equivalent Mn(1)O6 octahedra, and corners with three equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-61°. In the second V site, V(2) is bonded in a rectangular see-saw-like geometry to one O(2), one O(3), one O(6), and one O(8) atom. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form distorted MnO6 octahedra that share corners with three equivalent V(1)O4 tetrahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. In the second Mn site, Mn(2) is bonded to one O(2), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted MnO6 octahedra that share corners with three equivalent V(1)O4 tetrahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent Mn(1)O6 octahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted linear geometry to one O(2) and one O(3) atom. In the second Cu site, Cu(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one V(1), one Mn(1), and one Cu(2) atom to form distorted OMgMnVCu trigonal pyramids that share corners with two equivalent O(6)MgMn2V tetrahedra,  a cornercorner with one O(8)MgMn2VCu trigonal bipyramid, and  an edgeedge with one O(8)MgMn2VCu trigonal bipyramid. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Mg(1), one V(2), one Mn(2), one Cu(1), and one Cu(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Mg(1), one V(2), one Mn(1), one Cu(1), and one Cu(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Mg(1), one V(1), one Mn(2), and one Cu(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one V(1), one Mn(1), and one Mn(2) atom. In the sixth O site, O(6) is bonded to one Mg(1), one V(2), one Mn(1), and one Mn(2) atom to form OMgMn2V tetrahedra that share corners with two equivalent O(8)MgMn2VCu trigonal bipyramids, corners with two equivalent O(1)MgMnVCu trigonal pyramids, and  an edgeedge with one O(8)MgMn2VCu trigonal bipyramid. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one V(1), one Mn(1), and one Mn(2) atom. In the eighth O site, O(8) is bonded to one Mg(1), one V(2), one Mn(1), one Mn(2), and one Cu(2) atom to form OMgMn2VCu trigonal bipyramids that share corners with two equivalent O(6)MgMn2V tetrahedra,  a cornercorner with one O(1)MgMnVCu trigonal pyramid,  an edgeedge with one O(6)MgMn2V tetrahedra, and  an edgeedge with one O(1)MgMnVCu trigonal pyramid. is represented by the CIF file [CIF]
data_MgMn2V2(CuO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.564
_cell_length_b   5.683
_cell_length_c   6.223
_cell_angle_alpha   88.846
_cell_angle_beta   87.842
_cell_angle_gamma   113.733
_symmetry_Int_Tables_number   1
_cell_volume   179.882
_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  0.515  0.954  0.256  1.0
  Mn  Mn1  1  0.048  0.013  0.993  1.0
  Mn  Mn2  1  0.038  0.992  0.523  1.0
  V  V3  1  0.385  0.647  0.762  1.0
  V  V4  1  0.659  0.453  0.214  1.0
  Cu  Cu5  1  0.731  0.305  0.724  1.0
  Cu  Cu6  1  0.137  0.475  0.257  1.0
  O  O7  1  0.271  0.753  0.018  1.0
  O  O8  1  0.779  0.292  0.426  1.0
  O  O9  1  0.736  0.254  0.018  1.0
  O  O10  1  0.282  0.773  0.522  1.0
  O  O11  1  0.239  0.293  0.745  1.0
  O  O12  1  0.785  0.802  0.261  1.0
  O  O13  1  0.744  0.778  0.776  1.0
  O  O14  1  0.302  0.217  0.253  1.0
[/CIF]
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The crystal structure described by MgV2Mn2(CuO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(6), and one O(8) atom to form distorted MgO6 octahedra that share corners with two equivalent V(1)O4 tetrahedra, edges with two equivalent Mn(1)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(4), one O(5), and one O(7) atom to form VO4 tetrahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with three equivalent Mn(1)O6 octahedra, and corners with three equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-61°. In the second V site, V(2) is bonded in a rectangular see-saw-like geometry to one O(2), one O(3), one O(6), and one O(8) atom. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(3), one O(5), one O(6), one O(7), and one O(8) atom to form distorted MnO6 octahedra that share corners with three equivalent V(1)O4 tetrahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. In the second Mn site, Mn(2) is bonded to one O(2), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted MnO6 octahedra that share corners with three equivalent V(1)O4 tetrahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent Mn(1)O6 octahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted linear geometry to one O(2) and one O(3) atom. In the second Cu site, Cu(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), one V(1), one Mn(1), and one Cu(2) atom to form distorted OMgMnVCu trigonal pyramids that share corners with two equivalent O(6)MgMn2V tetrahedra,  a cornercorner with one O(8)MgMn2VCu trigonal bipyramid, and  an edgeedge with one O(8)MgMn2VCu trigonal bipyramid. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Mg(1), one V(2), one Mn(2), one Cu(1), and one Cu(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Mg(1), one V(2), one Mn(1), one Cu(1), and one Cu(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Mg(1), one V(1), one Mn(2), and one Cu(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one V(1), one Mn(1), and one Mn(2) atom. In the sixth O site, O(6) is bonded to one Mg(1), one V(2), one Mn(1), and one Mn(2) atom to form OMgMn2V tetrahedra that share corners with two equivalent O(8)MgMn2VCu trigonal bipyramids, corners with two equivalent O(1)MgMnVCu trigonal pyramids, and  an edgeedge with one O(8)MgMn2VCu trigonal bipyramid. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one V(1), one Mn(1), and one Mn(2) atom. In the eighth O site, O(8) is bonded to one Mg(1), one V(2), one Mn(1), one Mn(2), and one Cu(2) atom to form OMgMn2VCu trigonal bipyramids that share corners with two equivalent O(6)MgMn2V tetrahedra,  a cornercorner with one O(1)MgMnVCu trigonal pyramid,  an edgeedge with one O(6)MgMn2V tetrahedra, and  an edgeedge with one O(1)MgMnVCu trigonal pyramid. is represented by the CIF file [CIF]
data_MgMn2V2(CuO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.564
_cell_length_b   5.683
_cell_length_c   6.223
_cell_angle_alpha   88.846
_cell_angle_beta   87.842
_cell_angle_gamma   113.733
_symmetry_Int_Tables_number   1
_cell_volume   179.882
_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  0.515  0.954  0.256  1.0
  Mn  Mn1  1  0.048  0.013  0.993  1.0
  Mn  Mn2  1  0.038  0.992  0.523  1.0
  V  V3  1  0.385  0.647  0.762  1.0
  V  V4  1  0.659  0.453  0.214  1.0
  Cu  Cu5  1  0.731  0.305  0.724  1.0
  Cu  Cu6  1  0.137  0.475  0.257  1.0
  O  O7  1  0.271  0.753  0.018  1.0
  O  O8  1  0.779  0.292  0.426  1.0
  O  O9  1  0.736  0.254  0.018  1.0
  O  O10  1  0.282  0.773  0.522  1.0
  O  O11  1  0.239  0.293  0.745  1.0
  O  O12  1  0.785  0.802  0.261  1.0
  O  O13  1  0.744  0.778  0.776  1.0
  O  O14  1  0.302  0.217  0.253  1.0
[/CIF]
.