The crystal structure described by MgMn4(CuO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(4), one O(6), and one O(8) atom to form distorted MgO5 trigonal bipyramids that share  a cornercorner with one Mn(4)O6 octahedra,  an edgeedge with one Mn(4)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles are 79°. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a distorted rectangular see-saw-like geometry to one O(5), one O(6), one O(7), and one O(8) atom. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(3), one O(6), one O(7), and one O(8) atom to form MnO6 octahedra that share edges with two equivalent Mn(4)O6 octahedra and edges with two equivalent Mg(1)O5 trigonal bipyramids. In the third Mn site, Mn(3) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(8) atom. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(3), one O(4), one O(5), one O(7), and one O(8) atom to form distorted MnO6 octahedra that share  a cornercorner with one Mg(1)O5 trigonal bipyramid, edges with two equivalent Mn(2)O6 octahedra, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a linear geometry to one O(2) and one O(3) atom. In the second Cu site, Cu(2) is bonded in a 6-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(2), one Mn(3), and one Mn(4) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Mg(1), one Mn(2), one Mn(3), one Cu(1), and one Cu(2) atom. In the third O site, O(3) is bonded to one Mn(2), one Mn(4), one Cu(1), and one Cu(2) atom to form OMn2Cu2 trigonal pyramids that share corners with two equivalent O(8)MgMn4 square pyramids and corners with three equivalent O(7)Mn3Cu tetrahedra. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(3), one Mn(4), and one Cu(2) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Mn(1), one Mn(3), one Mn(4), and one Cu(2) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Mg(1), one Mn(1), one Mn(2), one Mn(3), and one Cu(2) atom. In the seventh O site, O(7) is bonded to one Mn(1), one Mn(2), one Mn(4), and one Cu(2) atom to form OMn3Cu tetrahedra that share  a cornercorner with one O(8)MgMn4 square pyramid, corners with three equivalent O(3)Mn2Cu2 trigonal pyramids, and  an edgeedge with one O(8)MgMn4 square pyramid. In the eighth O site, O(8) is bonded to one Mg(1), one Mn(1), one Mn(2), one Mn(3), and one Mn(4) atom to form distorted OMgMn4 square pyramids that share  a cornercorner with one O(7)Mn3Cu tetrahedra, corners with two equivalent O(3)Mn2Cu2 trigonal pyramids, and  an edgeedge with one O(7)Mn3Cu tetrahedra. is represented by the CIF file [CIF]
data_MgMn4(CuO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.273
_cell_length_b   5.820
_cell_length_c   6.631
_cell_angle_alpha   59.674
_cell_angle_beta   59.515
_cell_angle_gamma   61.756
_symmetry_Int_Tables_number   1
_cell_volume   172.206
_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  0.079  0.199  0.582  1.0
  Mn  Mn1  1  0.021  0.915  0.083  1.0
  Mn  Mn2  1  0.114  0.639  0.637  1.0
  Mn  Mn3  1  0.639  0.599  0.119  1.0
  Mn  Mn4  1  0.607  0.143  0.626  1.0
  Cu  Cu5  1  0.315  0.174  0.120  1.0
  Cu  Cu6  1  0.605  0.650  0.628  1.0
  O  O7  1  0.330  0.423  0.416  1.0
  O  O8  1  0.315  0.904  0.421  1.0
  O  O9  1  0.371  0.418  0.802  1.0
  O  O10  1  0.810  0.408  0.413  1.0
  O  O11  1  0.415  0.865  0.859  1.0
  O  O12  1  0.921  0.358  0.868  1.0
  O  O13  1  0.860  0.861  0.458  1.0
  O  O14  1  0.900  0.872  0.854  1.0
[/CIF]
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The crystal structure described by MgMn4(CuO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(4), one O(6), and one O(8) atom to form distorted MgO5 trigonal bipyramids that share  a cornercorner with one Mn(4)O6 octahedra,  an edgeedge with one Mn(4)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles are 79°. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a distorted rectangular see-saw-like geometry to one O(5), one O(6), one O(7), and one O(8) atom. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(3), one O(6), one O(7), and one O(8) atom to form MnO6 octahedra that share edges with two equivalent Mn(4)O6 octahedra and edges with two equivalent Mg(1)O5 trigonal bipyramids. In the third Mn site, Mn(3) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(6), and one O(8) atom. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(3), one O(4), one O(5), one O(7), and one O(8) atom to form distorted MnO6 octahedra that share  a cornercorner with one Mg(1)O5 trigonal bipyramid, edges with two equivalent Mn(2)O6 octahedra, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a linear geometry to one O(2) and one O(3) atom. In the second Cu site, Cu(2) is bonded in a 6-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(6), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(2), one Mn(3), and one Mn(4) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Mg(1), one Mn(2), one Mn(3), one Cu(1), and one Cu(2) atom. In the third O site, O(3) is bonded to one Mn(2), one Mn(4), one Cu(1), and one Cu(2) atom to form OMn2Cu2 trigonal pyramids that share corners with two equivalent O(8)MgMn4 square pyramids and corners with three equivalent O(7)Mn3Cu tetrahedra. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(3), one Mn(4), and one Cu(2) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Mn(1), one Mn(3), one Mn(4), and one Cu(2) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Mg(1), one Mn(1), one Mn(2), one Mn(3), and one Cu(2) atom. In the seventh O site, O(7) is bonded to one Mn(1), one Mn(2), one Mn(4), and one Cu(2) atom to form OMn3Cu tetrahedra that share  a cornercorner with one O(8)MgMn4 square pyramid, corners with three equivalent O(3)Mn2Cu2 trigonal pyramids, and  an edgeedge with one O(8)MgMn4 square pyramid. In the eighth O site, O(8) is bonded to one Mg(1), one Mn(1), one Mn(2), one Mn(3), and one Mn(4) atom to form distorted OMgMn4 square pyramids that share  a cornercorner with one O(7)Mn3Cu tetrahedra, corners with two equivalent O(3)Mn2Cu2 trigonal pyramids, and  an edgeedge with one O(7)Mn3Cu tetrahedra. is represented by the CIF file [CIF]
data_MgMn4(CuO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.273
_cell_length_b   5.820
_cell_length_c   6.631
_cell_angle_alpha   59.674
_cell_angle_beta   59.515
_cell_angle_gamma   61.756
_symmetry_Int_Tables_number   1
_cell_volume   172.206
_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  0.079  0.199  0.582  1.0
  Mn  Mn1  1  0.021  0.915  0.083  1.0
  Mn  Mn2  1  0.114  0.639  0.637  1.0
  Mn  Mn3  1  0.639  0.599  0.119  1.0
  Mn  Mn4  1  0.607  0.143  0.626  1.0
  Cu  Cu5  1  0.315  0.174  0.120  1.0
  Cu  Cu6  1  0.605  0.650  0.628  1.0
  O  O7  1  0.330  0.423  0.416  1.0
  O  O8  1  0.315  0.904  0.421  1.0
  O  O9  1  0.371  0.418  0.802  1.0
  O  O10  1  0.810  0.408  0.413  1.0
  O  O11  1  0.415  0.865  0.859  1.0
  O  O12  1  0.921  0.358  0.868  1.0
  O  O13  1  0.860  0.861  0.458  1.0
  O  O14  1  0.900  0.872  0.854  1.0
[/CIF]
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