The compound described by MgMn2(FeO4)2 crystallizes in the monoclinic P2 space group. Mg(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form MgO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, and faces with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-53°. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MnO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra, corners with four equivalent Fe(2)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-53°. In the second Mn site, Mn(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form MnO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra, corners with four equivalent Fe(2)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-53°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form FeO6 octahedra that share corners with four equivalent Mg(1)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-53°. In the second Fe site, Fe(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted FeO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, and faces with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-53°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Fe(1) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(1), one Mn(2), and one Fe(2) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Mn(1), one Fe(1), and one Fe(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(2), one Fe(1), and one Fe(2) atom. is represented by the CIF card [CIF]
data_MgMn2(FeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.852
_cell_length_b   5.642
_cell_length_c   4.914
_cell_angle_alpha   90.001
_cell_angle_beta   88.256
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   134.468
_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  0.000  0.602  0.250  1.0
  Mn  Mn1  1  0.000  0.873  0.750  1.0
  Mn  Mn2  1  0.000  0.136  0.250  1.0
  Fe  Fe3  1  0.500  0.345  0.750  1.0
  Fe  Fe4  1  0.500  0.675  0.250  1.0
  O  O5  1  0.218  0.115  0.572  1.0
  O  O6  1  0.212  0.880  0.076  1.0
  O  O7  1  0.258  0.630  0.573  1.0
  O  O8  1  0.263  0.375  0.090  1.0
  O  O9  1  0.742  0.630  0.927  1.0
  O  O10  1  0.737  0.375  0.410  1.0
  O  O11  1  0.782  0.115  0.928  1.0
  O  O12  1  0.788  0.880  0.424  1.0
[/CIF]
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The compound described by MgMn2(FeO4)2 crystallizes in the monoclinic P2 space group. Mg(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form MgO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra, edges with two equivalent Mn(1)O6 octahedra, edges with two equivalent Mn(2)O6 octahedra, and faces with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-53°. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MnO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra, corners with four equivalent Fe(2)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-53°. In the second Mn site, Mn(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form MnO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra, corners with four equivalent Fe(2)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-53°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form FeO6 octahedra that share corners with four equivalent Mg(1)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra, and edges with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-53°. In the second Fe site, Fe(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted FeO6 octahedra that share corners with four equivalent Mn(1)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, and faces with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-53°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Fe(1) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Mn(1), one Mn(2), and one Fe(2) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Mn(1), one Fe(1), and one Fe(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(2), one Fe(1), and one Fe(2) atom. is represented by the CIF card [CIF]
data_MgMn2(FeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.852
_cell_length_b   5.642
_cell_length_c   4.914
_cell_angle_alpha   90.001
_cell_angle_beta   88.256
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   134.468
_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  0.000  0.602  0.250  1.0
  Mn  Mn1  1  0.000  0.873  0.750  1.0
  Mn  Mn2  1  0.000  0.136  0.250  1.0
  Fe  Fe3  1  0.500  0.345  0.750  1.0
  Fe  Fe4  1  0.500  0.675  0.250  1.0
  O  O5  1  0.218  0.115  0.572  1.0
  O  O6  1  0.212  0.880  0.076  1.0
  O  O7  1  0.258  0.630  0.573  1.0
  O  O8  1  0.263  0.375  0.090  1.0
  O  O9  1  0.742  0.630  0.927  1.0
  O  O10  1  0.737  0.375  0.410  1.0
  O  O11  1  0.782  0.115  0.928  1.0
  O  O12  1  0.788  0.880  0.424  1.0
[/CIF]
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