The structure described by Mn2O3 crystallizes in the cubic I2_13 space group. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. In the second Mn site, Mn(2) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. In the third Mn site, Mn(3) is bonded in a trigonal planar geometry to three equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mn(1) and one Mn(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(3) atom. is represented by the CIF file [CIF]
data_Mn2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.030
_cell_length_b   10.030
_cell_length_c   10.030
_cell_angle_alpha   109.471
_cell_angle_beta   109.471
_cell_angle_gamma   109.471
_symmetry_Int_Tables_number   1
_cell_volume   776.689
_cell_formula_units_Z   8
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
  Mn  Mn0  1  0.750  0.869  0.119  1.0
  Mn  Mn1  1  0.381  0.250  0.631  1.0
  Mn  Mn2  1  0.631  0.381  0.250  1.0
  Mn  Mn3  1  0.119  0.750  0.869  1.0
  Mn  Mn4  1  0.869  0.119  0.750  1.0
  Mn  Mn5  1  0.250  0.631  0.381  1.0
  Mn  Mn6  1  0.750  0.365  0.615  1.0
  Mn  Mn7  1  0.885  0.250  0.135  1.0
  Mn  Mn8  1  0.135  0.885  0.250  1.0
  Mn  Mn9  1  0.615  0.750  0.365  1.0
  Mn  Mn10  1  0.365  0.615  0.750  1.0
  Mn  Mn11  1  0.250  0.135  0.885  1.0
  Mn  Mn12  1  0.978  0.500  0.000  1.0
  Mn  Mn13  1  0.500  0.000  0.978  1.0
  Mn  Mn14  1  0.000  0.978  0.500  1.0
  Mn  Mn15  1  0.522  0.522  0.522  1.0
  O  O16  1  0.374  0.440  0.742  1.0
  O  O17  1  0.198  0.632  0.758  1.0
  O  O18  1  0.302  0.060  0.435  1.0
  O  O19  1  0.868  0.065  0.126  1.0
  O  O20  1  0.065  0.126  0.868  1.0
  O  O21  1  0.742  0.374  0.440  1.0
  O  O22  1  0.632  0.758  0.198  1.0
  O  O23  1  0.435  0.302  0.060  1.0
  O  O24  1  0.440  0.742  0.374  1.0
  O  O25  1  0.758  0.198  0.632  1.0
  O  O26  1  0.060  0.435  0.302  1.0
  O  O27  1  0.126  0.868  0.065  1.0
  O  O28  1  0.885  0.270  0.952  1.0
  O  O29  1  0.818  0.934  0.548  1.0
  O  O30  1  0.682  0.230  0.116  1.0
  O  O31  1  0.566  0.384  0.615  1.0
  O  O32  1  0.615  0.566  0.384  1.0
  O  O33  1  0.230  0.116  0.682  1.0
  O  O34  1  0.548  0.818  0.934  1.0
  O  O35  1  0.270  0.952  0.885  1.0
  O  O36  1  0.116  0.682  0.230  1.0
  O  O37  1  0.934  0.548  0.818  1.0
  O  O38  1  0.952  0.885  0.270  1.0
  O  O39  1  0.384  0.615  0.566  1.0
[/CIF]
.
The structure described by Mn2O3 crystallizes in the cubic I2_13 space group. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. In the second Mn site, Mn(2) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. In the third Mn site, Mn(3) is bonded in a trigonal planar geometry to three equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mn(1) and one Mn(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Mn(1), one Mn(2), and one Mn(3) atom. is represented by the CIF file [CIF]
data_Mn2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.030
_cell_length_b   10.030
_cell_length_c   10.030
_cell_angle_alpha   109.471
_cell_angle_beta   109.471
_cell_angle_gamma   109.471
_symmetry_Int_Tables_number   1
_cell_volume   776.689
_cell_formula_units_Z   8
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
  Mn  Mn0  1  0.750  0.869  0.119  1.0
  Mn  Mn1  1  0.381  0.250  0.631  1.0
  Mn  Mn2  1  0.631  0.381  0.250  1.0
  Mn  Mn3  1  0.119  0.750  0.869  1.0
  Mn  Mn4  1  0.869  0.119  0.750  1.0
  Mn  Mn5  1  0.250  0.631  0.381  1.0
  Mn  Mn6  1  0.750  0.365  0.615  1.0
  Mn  Mn7  1  0.885  0.250  0.135  1.0
  Mn  Mn8  1  0.135  0.885  0.250  1.0
  Mn  Mn9  1  0.615  0.750  0.365  1.0
  Mn  Mn10  1  0.365  0.615  0.750  1.0
  Mn  Mn11  1  0.250  0.135  0.885  1.0
  Mn  Mn12  1  0.978  0.500  0.000  1.0
  Mn  Mn13  1  0.500  0.000  0.978  1.0
  Mn  Mn14  1  0.000  0.978  0.500  1.0
  Mn  Mn15  1  0.522  0.522  0.522  1.0
  O  O16  1  0.374  0.440  0.742  1.0
  O  O17  1  0.198  0.632  0.758  1.0
  O  O18  1  0.302  0.060  0.435  1.0
  O  O19  1  0.868  0.065  0.126  1.0
  O  O20  1  0.065  0.126  0.868  1.0
  O  O21  1  0.742  0.374  0.440  1.0
  O  O22  1  0.632  0.758  0.198  1.0
  O  O23  1  0.435  0.302  0.060  1.0
  O  O24  1  0.440  0.742  0.374  1.0
  O  O25  1  0.758  0.198  0.632  1.0
  O  O26  1  0.060  0.435  0.302  1.0
  O  O27  1  0.126  0.868  0.065  1.0
  O  O28  1  0.885  0.270  0.952  1.0
  O  O29  1  0.818  0.934  0.548  1.0
  O  O30  1  0.682  0.230  0.116  1.0
  O  O31  1  0.566  0.384  0.615  1.0
  O  O32  1  0.615  0.566  0.384  1.0
  O  O33  1  0.230  0.116  0.682  1.0
  O  O34  1  0.548  0.818  0.934  1.0
  O  O35  1  0.270  0.952  0.885  1.0
  O  O36  1  0.116  0.682  0.230  1.0
  O  O37  1  0.934  0.548  0.818  1.0
  O  O38  1  0.952  0.885  0.270  1.0
  O  O39  1  0.384  0.615  0.566  1.0
[/CIF]
.