The compound described by MgMn2O4 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form MgO6 octahedra that share corners with six equivalent Mn(1)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with six equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-30°. Mn(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form distorted MnO6 octahedra that share corners with three equivalent Mg(1)O6 octahedra, edges with three equivalent Mg(1)O6 octahedra, and edges with six equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-30°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Mg(1) and three equivalent Mn(1) atoms to form a mixture of edge and corner-sharing OMg2Mn3 square pyramids. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1) and three equivalent Mn(1) atoms. is represented by the CIF file [CIF]
data_MgMn2O4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.900
_cell_length_b   5.237
_cell_length_c   5.498
_cell_angle_alpha   101.845
_cell_angle_beta   89.993
_cell_angle_gamma   73.809
_symmetry_Int_Tables_number   1
_cell_volume   78.335
_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  0.748  0.503  0.750  1.0
  Mn  Mn1  1  0.971  0.057  0.015  1.0
  Mn  Mn2  1  0.525  0.949  0.485  1.0
  O  O3  1  0.129  0.742  0.612  1.0
  O  O4  1  0.590  0.818  0.073  1.0
  O  O5  1  0.367  0.264  0.888  1.0
  O  O6  1  0.905  0.188  0.426  1.0
[/CIF]
.
The compound described by MgMn2O4 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form MgO6 octahedra that share corners with six equivalent Mn(1)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with six equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-30°. Mn(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form distorted MnO6 octahedra that share corners with three equivalent Mg(1)O6 octahedra, edges with three equivalent Mg(1)O6 octahedra, and edges with six equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-30°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Mg(1) and three equivalent Mn(1) atoms to form a mixture of edge and corner-sharing OMg2Mn3 square pyramids. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1) and three equivalent Mn(1) atoms. is represented by the CIF file [CIF]
data_MgMn2O4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.900
_cell_length_b   5.237
_cell_length_c   5.498
_cell_angle_alpha   101.845
_cell_angle_beta   89.993
_cell_angle_gamma   73.809
_symmetry_Int_Tables_number   1
_cell_volume   78.335
_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  0.748  0.503  0.750  1.0
  Mn  Mn1  1  0.971  0.057  0.015  1.0
  Mn  Mn2  1  0.525  0.949  0.485  1.0
  O  O3  1  0.129  0.742  0.612  1.0
  O  O4  1  0.590  0.818  0.073  1.0
  O  O5  1  0.367  0.264  0.888  1.0
  O  O6  1  0.905  0.188  0.426  1.0
[/CIF]
.