The structure described by MgMn2Al2O6 crystallizes in the triclinic P-1 space group. Mg(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MgO6 octahedra that share corners with six equivalent Mn(1)O6 octahedra, edges with six equivalent Al(1)O6 octahedra, and faces with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-48°. Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted MnO6 octahedra that share corners with three equivalent Mg(1)O6 octahedra, corners with nine equivalent Al(1)O6 octahedra, edges with three equivalent Mn(1)O6 octahedra,  a faceface with one Mg(1)O6 octahedra, and  a faceface with one Al(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-56°. Al(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form AlO6 octahedra that share corners with nine equivalent Mn(1)O6 octahedra, edges with three equivalent Mg(1)O6 octahedra, edges with three equivalent Al(1)O6 octahedra, and  a faceface with one Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-56°. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), two equivalent Mn(1), and two equivalent Al(1) atoms to form a mixture of distorted corner and edge-sharing OMgMn2Al2 trigonal bipyramids. In the second O site, O(2) is bonded to one Mg(1), two equivalent Mn(1), and two equivalent Al(1) atoms to form a mixture of distorted corner and edge-sharing OMgMn2Al2 trigonal bipyramids. In the third O site, O(3) is bonded to one Mg(1), two equivalent Mn(1), and two equivalent Al(1) atoms to form a mixture of distorted corner and edge-sharing OMgMn2Al2 trigonal bipyramids. is represented by the CIF card [CIF]
data_MgMn2Al2O6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.038
_cell_length_b   5.052
_cell_length_c   5.934
_cell_angle_alpha   65.249
_cell_angle_beta   115.543
_cell_angle_gamma   120.008
_symmetry_Int_Tables_number   1
_cell_volume   113.954
_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  0.500  0.500  0.500  1.0
  Mn  Mn1  1  0.667  0.327  0.010  1.0
  Mn  Mn2  1  0.333  0.673  0.990  1.0
  Al  Al3  1  0.850  0.150  0.549  1.0
  Al  Al4  1  0.150  0.850  0.451  1.0
  O  O5  1  0.925  0.775  0.708  1.0
  O  O6  1  0.560  0.080  0.708  1.0
  O  O7  1  0.231  0.444  0.709  1.0
  O  O8  1  0.769  0.556  0.291  1.0
  O  O9  1  0.440  0.920  0.292  1.0
  O  O10  1  0.075  0.225  0.292  1.0
[/CIF]
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The structure described by MgMn2Al2O6 crystallizes in the triclinic P-1 space group. Mg(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form MgO6 octahedra that share corners with six equivalent Mn(1)O6 octahedra, edges with six equivalent Al(1)O6 octahedra, and faces with two equivalent Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-48°. Mn(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted MnO6 octahedra that share corners with three equivalent Mg(1)O6 octahedra, corners with nine equivalent Al(1)O6 octahedra, edges with three equivalent Mn(1)O6 octahedra,  a faceface with one Mg(1)O6 octahedra, and  a faceface with one Al(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-56°. Al(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form AlO6 octahedra that share corners with nine equivalent Mn(1)O6 octahedra, edges with three equivalent Mg(1)O6 octahedra, edges with three equivalent Al(1)O6 octahedra, and  a faceface with one Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-56°. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), two equivalent Mn(1), and two equivalent Al(1) atoms to form a mixture of distorted corner and edge-sharing OMgMn2Al2 trigonal bipyramids. In the second O site, O(2) is bonded to one Mg(1), two equivalent Mn(1), and two equivalent Al(1) atoms to form a mixture of distorted corner and edge-sharing OMgMn2Al2 trigonal bipyramids. In the third O site, O(3) is bonded to one Mg(1), two equivalent Mn(1), and two equivalent Al(1) atoms to form a mixture of distorted corner and edge-sharing OMgMn2Al2 trigonal bipyramids. is represented by the CIF card [CIF]
data_MgMn2Al2O6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.038
_cell_length_b   5.052
_cell_length_c   5.934
_cell_angle_alpha   65.249
_cell_angle_beta   115.543
_cell_angle_gamma   120.008
_symmetry_Int_Tables_number   1
_cell_volume   113.954
_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  0.500  0.500  0.500  1.0
  Mn  Mn1  1  0.667  0.327  0.010  1.0
  Mn  Mn2  1  0.333  0.673  0.990  1.0
  Al  Al3  1  0.850  0.150  0.549  1.0
  Al  Al4  1  0.150  0.850  0.451  1.0
  O  O5  1  0.925  0.775  0.708  1.0
  O  O6  1  0.560  0.080  0.708  1.0
  O  O7  1  0.231  0.444  0.709  1.0
  O  O8  1  0.769  0.556  0.291  1.0
  O  O9  1  0.440  0.920  0.292  1.0
  O  O10  1  0.075  0.225  0.292  1.0
[/CIF]
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