The material structure described by In2O3 is Stibnite structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent In sites. In the first In site, In(1) is bonded to two equivalent O(1), two equivalent O(3), and three equivalent O(2) atoms to form a mixture of distorted edge, face, and corner-sharing InO7 pentagonal bipyramids. In the second In site, In(2) is bonded to two equivalent O(1), two equivalent O(2), and three equivalent O(3) atoms to form a mixture of distorted edge and corner-sharing InO7 pentagonal bipyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent In(1) and two equivalent In(2) atoms to form OIn4 trigonal pyramids that share corners with four equivalent O(2)In5 square pyramids, corners with seven equivalent O(3)In5 trigonal bipyramids, corners with four equivalent O(1)In4 trigonal pyramids, edges with three equivalent O(2)In5 square pyramids, and  a faceface with one O(3)In5 trigonal bipyramid. In the second O site, O(2) is bonded to two equivalent In(2) and three equivalent In(1) atoms to form OIn5 square pyramids that share corners with eight equivalent O(3)In5 trigonal bipyramids, corners with four equivalent O(1)In4 trigonal pyramids, edges with four equivalent O(2)In5 square pyramids, edges with two equivalent O(3)In5 trigonal bipyramids, and edges with three equivalent O(1)In4 trigonal pyramids. In the third O site, O(3) is bonded to two equivalent In(1) and three equivalent In(2) atoms to form distorted OIn5 trigonal bipyramids that share corners with eight equivalent O(2)In5 square pyramids, corners with seven equivalent O(1)In4 trigonal pyramids, edges with two equivalent O(2)In5 square pyramids, edges with four equivalent O(3)In5 trigonal bipyramids, and  a faceface with one O(1)In4 trigonal pyramid. is represented by the CIF file [CIF]
data_In2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.187
_cell_length_b   8.545
_cell_length_c   8.888
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   242.084
_cell_formula_units_Z   4
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
  In  In0  1  0.250  0.815  0.488  1.0
  In  In1  1  0.250  0.315  0.012  1.0
  In  In2  1  0.750  0.185  0.512  1.0
  In  In3  1  0.750  0.685  0.988  1.0
  In  In4  1  0.250  0.992  0.813  1.0
  In  In5  1  0.250  0.492  0.687  1.0
  In  In6  1  0.750  0.008  0.187  1.0
  In  In7  1  0.750  0.508  0.313  1.0
  O  O8  1  0.250  0.724  0.820  1.0
  O  O9  1  0.250  0.224  0.680  1.0
  O  O10  1  0.750  0.276  0.180  1.0
  O  O11  1  0.750  0.776  0.320  1.0
  O  O12  1  0.250  0.054  0.372  1.0
  O  O13  1  0.250  0.554  0.128  1.0
  O  O14  1  0.750  0.946  0.628  1.0
  O  O15  1  0.750  0.446  0.872  1.0
  O  O16  1  0.250  0.387  0.439  1.0
  O  O17  1  0.250  0.887  0.061  1.0
  O  O18  1  0.750  0.613  0.561  1.0
  O  O19  1  0.750  0.113  0.939  1.0
[/CIF]
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The material structure described by In2O3 is Stibnite structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent In sites. In the first In site, In(1) is bonded to two equivalent O(1), two equivalent O(3), and three equivalent O(2) atoms to form a mixture of distorted edge, face, and corner-sharing InO7 pentagonal bipyramids. In the second In site, In(2) is bonded to two equivalent O(1), two equivalent O(2), and three equivalent O(3) atoms to form a mixture of distorted edge and corner-sharing InO7 pentagonal bipyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent In(1) and two equivalent In(2) atoms to form OIn4 trigonal pyramids that share corners with four equivalent O(2)In5 square pyramids, corners with seven equivalent O(3)In5 trigonal bipyramids, corners with four equivalent O(1)In4 trigonal pyramids, edges with three equivalent O(2)In5 square pyramids, and  a faceface with one O(3)In5 trigonal bipyramid. In the second O site, O(2) is bonded to two equivalent In(2) and three equivalent In(1) atoms to form OIn5 square pyramids that share corners with eight equivalent O(3)In5 trigonal bipyramids, corners with four equivalent O(1)In4 trigonal pyramids, edges with four equivalent O(2)In5 square pyramids, edges with two equivalent O(3)In5 trigonal bipyramids, and edges with three equivalent O(1)In4 trigonal pyramids. In the third O site, O(3) is bonded to two equivalent In(1) and three equivalent In(2) atoms to form distorted OIn5 trigonal bipyramids that share corners with eight equivalent O(2)In5 square pyramids, corners with seven equivalent O(1)In4 trigonal pyramids, edges with two equivalent O(2)In5 square pyramids, edges with four equivalent O(3)In5 trigonal bipyramids, and  a faceface with one O(1)In4 trigonal pyramid. is represented by the CIF file [CIF]
data_In2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.187
_cell_length_b   8.545
_cell_length_c   8.888
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   242.084
_cell_formula_units_Z   4
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
  In  In0  1  0.250  0.815  0.488  1.0
  In  In1  1  0.250  0.315  0.012  1.0
  In  In2  1  0.750  0.185  0.512  1.0
  In  In3  1  0.750  0.685  0.988  1.0
  In  In4  1  0.250  0.992  0.813  1.0
  In  In5  1  0.250  0.492  0.687  1.0
  In  In6  1  0.750  0.008  0.187  1.0
  In  In7  1  0.750  0.508  0.313  1.0
  O  O8  1  0.250  0.724  0.820  1.0
  O  O9  1  0.250  0.224  0.680  1.0
  O  O10  1  0.750  0.276  0.180  1.0
  O  O11  1  0.750  0.776  0.320  1.0
  O  O12  1  0.250  0.054  0.372  1.0
  O  O13  1  0.250  0.554  0.128  1.0
  O  O14  1  0.750  0.946  0.628  1.0
  O  O15  1  0.750  0.446  0.872  1.0
  O  O16  1  0.250  0.387  0.439  1.0
  O  O17  1  0.250  0.887  0.061  1.0
  O  O18  1  0.750  0.613  0.561  1.0
  O  O19  1  0.750  0.113  0.939  1.0
[/CIF]
.