The structure described by MgMn4(FeO4)2 is Aluminum carbonitride-derived structured and crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(5), one O(6), and one O(7) atom to form distorted MgO4 tetrahedra that share corners with three equivalent Mn(4)O6 octahedra, corners with three equivalent Fe(1)O6 octahedra, corners with two equivalent Mn(1)O4 tetrahedra, and  an edgeedge with one Mn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 33-62°. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(4), one O(6), one O(7), and one O(8) atom to form MnO4 tetrahedra that share corners with three equivalent Mn(4)O6 octahedra, corners with three equivalent Fe(1)O6 octahedra, and corners with two equivalent Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-67°. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form distorted MnO4 tetrahedra that share corners with three equivalent Mn(4)O6 octahedra, corners with three equivalent Fe(1)O6 octahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-69°. In the third Mn site, Mn(3) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(6), one O(7), and one O(8) atom. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(2), one O(4), one O(5), one O(7), and one O(8) atom to form MnO6 octahedra that share corners with three equivalent Mg(1)O4 tetrahedra, corners with three equivalent Mn(1)O4 tetrahedra, corners with three equivalent Mn(2)O4 tetrahedra, and edges with two equivalent Fe(1)O6 octahedra. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(3), one O(4), one O(5), one O(6), and one O(8) atom to form FeO6 octahedra that share corners with three equivalent Mg(1)O4 tetrahedra, corners with three equivalent Mn(1)O4 tetrahedra, corners with three equivalent Mn(2)O4 tetrahedra, and edges with two equivalent Mn(4)O6 octahedra. In the second Fe site, Fe(2) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(4), 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 4-coordinate geometry to one Mg(1), one Mn(2), one Mn(4), and one Fe(1) atom. In the second O site, O(2) is bonded to one Mn(2), one Mn(3), one Mn(4), and one Fe(2) atom to form OMn3Fe tetrahedra that share  a cornercorner with one O(3)Mn2Fe2 tetrahedra, corners with two equivalent O(6)MgMn2Fe2 trigonal bipyramids, corners with three equivalent O(7)MgMn3Fe trigonal bipyramids, corners with two equivalent O(4)Mn2Fe2 trigonal pyramids, and  an edgeedge with one O(3)Mn2Fe2 tetrahedra. In the third O site, O(3) is bonded to one Mn(2), one Mn(3), one Fe(1), and one Fe(2) atom to form OMn2Fe2 tetrahedra that share  a cornercorner with one O(2)Mn3Fe tetrahedra, corners with two equivalent O(7)MgMn3Fe trigonal bipyramids, corners with three equivalent O(6)MgMn2Fe2 trigonal bipyramids, corners with two equivalent O(4)Mn2Fe2 trigonal pyramids, and  an edgeedge with one O(2)Mn3Fe tetrahedra. In the fourth O site, O(4) is bonded to one Mn(1), one Mn(4), one Fe(1), and one Fe(2) atom to form distorted OMn2Fe2 trigonal pyramids that share corners with two equivalent O(3)Mn2Fe2 tetrahedra, corners with two equivalent O(2)Mn3Fe tetrahedra,  a cornercorner with one O(6)MgMn2Fe2 trigonal bipyramid,  a cornercorner with one O(7)MgMn3Fe trigonal bipyramid,  an edgeedge with one O(6)MgMn2Fe2 trigonal bipyramid, and  an edgeedge with one O(7)MgMn3Fe trigonal bipyramid. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Mn(2), one Mn(4), and one Fe(1) atom. In the sixth O site, O(6) is bonded to one Mg(1), one Mn(1), one Mn(3), one Fe(1), and one Fe(2) atom to form distorted OMgMn2Fe2 trigonal bipyramids that share corners with two equivalent O(2)Mn3Fe tetrahedra, corners with three equivalent O(3)Mn2Fe2 tetrahedra,  a cornercorner with one O(7)MgMn3Fe trigonal bipyramid,  a cornercorner with one O(4)Mn2Fe2 trigonal pyramid,  an edgeedge with one O(4)Mn2Fe2 trigonal pyramid, and  a faceface with one O(7)MgMn3Fe trigonal bipyramid. In the seventh O site, O(7) is bonded to one Mg(1), one Mn(1), one Mn(3), one Mn(4), and one Fe(2) atom to form distorted OMgMn3Fe trigonal bipyramids that share corners with two equivalent O(3)Mn2Fe2 tetrahedra, corners with three equivalent O(2)Mn3Fe tetrahedra,  a cornercorner with one O(6)MgMn2Fe2 trigonal bipyramid,  a cornercorner with one O(4)Mn2Fe2 trigonal pyramid,  an edgeedge with one O(4)Mn2Fe2 trigonal pyramid, and  a faceface with one O(6)MgMn2Fe2 trigonal bipyramid. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Mn(1), one Mn(3), one Mn(4), and one Fe(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgMn4(FeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.097
_cell_length_b   6.373
_cell_length_c   6.354
_cell_angle_alpha   58.909
_cell_angle_beta   61.450
_cell_angle_gamma   61.642
_symmetry_Int_Tables_number   1
_cell_volume   176.964
_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  0.025  0.481  0.467  1.0
  Mn  Mn1  1  0.978  0.034  0.024  1.0
  Mn  Mn2  1  0.329  0.179  0.184  1.0
  Mn  Mn3  1  0.095  0.680  0.690  1.0
  Mn  Mn4  1  0.626  0.128  0.614  1.0
  Fe  Fe5  1  0.622  0.616  0.135  1.0
  Fe  Fe6  1  0.547  0.665  0.672  1.0
  O  O7  1  0.412  0.349  0.351  1.0
  O  O8  1  0.413  0.367  0.801  1.0
  O  O9  1  0.412  0.799  0.377  1.0
  O  O10  1  0.392  0.886  0.885  1.0
  O  O11  1  0.891  0.353  0.342  1.0
  O  O12  1  0.854  0.430  0.852  1.0
  O  O13  1  0.854  0.864  0.426  1.0
  O  O14  1  0.820  0.907  0.889  1.0
[/CIF]
.
The structure described by MgMn4(FeO4)2 is Aluminum carbonitride-derived structured and crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(5), one O(6), and one O(7) atom to form distorted MgO4 tetrahedra that share corners with three equivalent Mn(4)O6 octahedra, corners with three equivalent Fe(1)O6 octahedra, corners with two equivalent Mn(1)O4 tetrahedra, and  an edgeedge with one Mn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 33-62°. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(4), one O(6), one O(7), and one O(8) atom to form MnO4 tetrahedra that share corners with three equivalent Mn(4)O6 octahedra, corners with three equivalent Fe(1)O6 octahedra, and corners with two equivalent Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-67°. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form distorted MnO4 tetrahedra that share corners with three equivalent Mn(4)O6 octahedra, corners with three equivalent Fe(1)O6 octahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-69°. In the third Mn site, Mn(3) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(6), one O(7), and one O(8) atom. In the fourth Mn site, Mn(4) is bonded to one O(1), one O(2), one O(4), one O(5), one O(7), and one O(8) atom to form MnO6 octahedra that share corners with three equivalent Mg(1)O4 tetrahedra, corners with three equivalent Mn(1)O4 tetrahedra, corners with three equivalent Mn(2)O4 tetrahedra, and edges with two equivalent Fe(1)O6 octahedra. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(1), one O(3), one O(4), one O(5), one O(6), and one O(8) atom to form FeO6 octahedra that share corners with three equivalent Mg(1)O4 tetrahedra, corners with three equivalent Mn(1)O4 tetrahedra, corners with three equivalent Mn(2)O4 tetrahedra, and edges with two equivalent Mn(4)O6 octahedra. In the second Fe site, Fe(2) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(4), 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 4-coordinate geometry to one Mg(1), one Mn(2), one Mn(4), and one Fe(1) atom. In the second O site, O(2) is bonded to one Mn(2), one Mn(3), one Mn(4), and one Fe(2) atom to form OMn3Fe tetrahedra that share  a cornercorner with one O(3)Mn2Fe2 tetrahedra, corners with two equivalent O(6)MgMn2Fe2 trigonal bipyramids, corners with three equivalent O(7)MgMn3Fe trigonal bipyramids, corners with two equivalent O(4)Mn2Fe2 trigonal pyramids, and  an edgeedge with one O(3)Mn2Fe2 tetrahedra. In the third O site, O(3) is bonded to one Mn(2), one Mn(3), one Fe(1), and one Fe(2) atom to form OMn2Fe2 tetrahedra that share  a cornercorner with one O(2)Mn3Fe tetrahedra, corners with two equivalent O(7)MgMn3Fe trigonal bipyramids, corners with three equivalent O(6)MgMn2Fe2 trigonal bipyramids, corners with two equivalent O(4)Mn2Fe2 trigonal pyramids, and  an edgeedge with one O(2)Mn3Fe tetrahedra. In the fourth O site, O(4) is bonded to one Mn(1), one Mn(4), one Fe(1), and one Fe(2) atom to form distorted OMn2Fe2 trigonal pyramids that share corners with two equivalent O(3)Mn2Fe2 tetrahedra, corners with two equivalent O(2)Mn3Fe tetrahedra,  a cornercorner with one O(6)MgMn2Fe2 trigonal bipyramid,  a cornercorner with one O(7)MgMn3Fe trigonal bipyramid,  an edgeedge with one O(6)MgMn2Fe2 trigonal bipyramid, and  an edgeedge with one O(7)MgMn3Fe trigonal bipyramid. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Mn(2), one Mn(4), and one Fe(1) atom. In the sixth O site, O(6) is bonded to one Mg(1), one Mn(1), one Mn(3), one Fe(1), and one Fe(2) atom to form distorted OMgMn2Fe2 trigonal bipyramids that share corners with two equivalent O(2)Mn3Fe tetrahedra, corners with three equivalent O(3)Mn2Fe2 tetrahedra,  a cornercorner with one O(7)MgMn3Fe trigonal bipyramid,  a cornercorner with one O(4)Mn2Fe2 trigonal pyramid,  an edgeedge with one O(4)Mn2Fe2 trigonal pyramid, and  a faceface with one O(7)MgMn3Fe trigonal bipyramid. In the seventh O site, O(7) is bonded to one Mg(1), one Mn(1), one Mn(3), one Mn(4), and one Fe(2) atom to form distorted OMgMn3Fe trigonal bipyramids that share corners with two equivalent O(3)Mn2Fe2 tetrahedra, corners with three equivalent O(2)Mn3Fe tetrahedra,  a cornercorner with one O(6)MgMn2Fe2 trigonal bipyramid,  a cornercorner with one O(4)Mn2Fe2 trigonal pyramid,  an edgeedge with one O(4)Mn2Fe2 trigonal pyramid, and  a faceface with one O(6)MgMn2Fe2 trigonal bipyramid. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Mn(1), one Mn(3), one Mn(4), and one Fe(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgMn4(FeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.097
_cell_length_b   6.373
_cell_length_c   6.354
_cell_angle_alpha   58.909
_cell_angle_beta   61.450
_cell_angle_gamma   61.642
_symmetry_Int_Tables_number   1
_cell_volume   176.964
_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  0.025  0.481  0.467  1.0
  Mn  Mn1  1  0.978  0.034  0.024  1.0
  Mn  Mn2  1  0.329  0.179  0.184  1.0
  Mn  Mn3  1  0.095  0.680  0.690  1.0
  Mn  Mn4  1  0.626  0.128  0.614  1.0
  Fe  Fe5  1  0.622  0.616  0.135  1.0
  Fe  Fe6  1  0.547  0.665  0.672  1.0
  O  O7  1  0.412  0.349  0.351  1.0
  O  O8  1  0.413  0.367  0.801  1.0
  O  O9  1  0.412  0.799  0.377  1.0
  O  O10  1  0.392  0.886  0.885  1.0
  O  O11  1  0.891  0.353  0.342  1.0
  O  O12  1  0.854  0.430  0.852  1.0
  O  O13  1  0.854  0.864  0.426  1.0
  O  O14  1  0.820  0.907  0.889  1.0
[/CIF]
.