The material structure described by MgMn2O4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(3), and two equivalent O(4) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form edge-sharing MnO6 octahedra. In the second Mn site, Mn(2) is bonded in a 5-coordinate geometry to one O(2), one O(3), two equivalent O(1), and two equivalent O(4) atoms. There are four 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(1), and two equivalent Mn(2) atoms. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Mn(2) and two equivalent Mn(1) atoms. In the third O site, O(3) is bonded to one Mg(1), one Mn(2), and two equivalent Mn(1) atoms to form distorted corner-sharing OMgMn3 trigonal pyramids. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to two equivalent Mg(1), one Mn(1), and two equivalent Mn(2) atoms. is represented by the CIF file [CIF]
data_MgMn2O4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.044
_cell_length_b   5.937
_cell_length_c   5.342
_cell_angle_alpha   98.550
_cell_angle_beta   91.688
_cell_angle_gamma   70.284
_symmetry_Int_Tables_number   1
_cell_volume   89.853
_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  0.326  0.427  0.583  1.0
  Mn  Mn1  1  0.985  0.028  0.005  1.0
  Mn  Mn2  1  0.483  0.960  0.496  1.0
  O  O3  1  0.076  0.773  0.617  1.0
  O  O4  1  0.600  0.854  0.137  1.0
  O  O5  1  0.388  0.182  0.839  1.0
  O  O6  1  0.939  0.235  0.409  1.0
[/CIF]
.
The material structure described by MgMn2O4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(3), and two equivalent O(4) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form edge-sharing MnO6 octahedra. In the second Mn site, Mn(2) is bonded in a 5-coordinate geometry to one O(2), one O(3), two equivalent O(1), and two equivalent O(4) atoms. There are four 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(1), and two equivalent Mn(2) atoms. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Mn(2) and two equivalent Mn(1) atoms. In the third O site, O(3) is bonded to one Mg(1), one Mn(2), and two equivalent Mn(1) atoms to form distorted corner-sharing OMgMn3 trigonal pyramids. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to two equivalent Mg(1), one Mn(1), and two equivalent Mn(2) atoms. is represented by the CIF file [CIF]
data_MgMn2O4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.044
_cell_length_b   5.937
_cell_length_c   5.342
_cell_angle_alpha   98.550
_cell_angle_beta   91.688
_cell_angle_gamma   70.284
_symmetry_Int_Tables_number   1
_cell_volume   89.853
_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  0.326  0.427  0.583  1.0
  Mn  Mn1  1  0.985  0.028  0.005  1.0
  Mn  Mn2  1  0.483  0.960  0.496  1.0
  O  O3  1  0.076  0.773  0.617  1.0
  O  O4  1  0.600  0.854  0.137  1.0
  O  O5  1  0.388  0.182  0.839  1.0
  O  O6  1  0.939  0.235  0.409  1.0
[/CIF]
.