The compound described by V2O3 crystallizes in the monoclinic P2_1/m space group. There are six inequivalent V sites. In the first V site, V(1) is bonded to one O(2), one O(4), two equivalent O(1), and three equivalent O(3) atoms to form distorted VO7 pentagonal bipyramids that share  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one V(4)O6 octahedra, edges with two equivalent V(3)O6 octahedra, and edges with four equivalent V(1)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 34-40°. In the second V site, V(2) is bonded in a 7-coordinate geometry to one O(4), one O(5), two equivalent O(2), and three equivalent O(1) atoms. In the third V site, V(3) is bonded to one O(3), one O(7), two equivalent O(4), and two equivalent O(6) atoms to form VO6 octahedra that share corners with two equivalent V(4)O6 octahedra, corners with two equivalent V(5)O6 octahedra,  a cornercorner with one V(1)O7 pentagonal bipyramid,  an edgeedge with one V(4)O6 octahedra, edges with two equivalent V(3)O6 octahedra, and edges with two equivalent V(1)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 15-63°. In the fourth V site, V(4) is bonded to one O(2), one O(8), two equivalent O(5), and two equivalent O(6) atoms to form VO6 octahedra that share corners with two equivalent V(3)O6 octahedra, corners with two equivalent V(5)O6 octahedra,  a cornercorner with one V(1)O7 pentagonal bipyramid,  an edgeedge with one V(3)O6 octahedra, and edges with two equivalent V(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 15-61°. In the fifth V site, V(5) is bonded to one O(5), two equivalent O(7), and three equivalent O(9) atoms to form a mixture of corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 61-63°. In the sixth V site, V(6) is bonded in a 7-coordinate geometry to one O(6), one O(9), two equivalent O(7), and three equivalent O(8) atoms. There are nine inequivalent O sites. In the first O site, O(1) is bonded to two equivalent V(1) and three equivalent V(2) atoms to form distorted OV5 trigonal bipyramids that share corners with two equivalent O(2)V4 tetrahedra,  a cornercorner with one O(4)V4 trigonal pyramid, corners with four equivalent O(3)V4 trigonal pyramids, edges with three equivalent O(2)V4 tetrahedra, edges with four equivalent O(1)V5 trigonal bipyramids,  an edgeedge with one O(3)V4 trigonal pyramid, and edges with two equivalent O(4)V4 trigonal pyramids. In the second O site, O(2) is bonded to one V(1), one V(4), and two equivalent V(2) atoms to form distorted OV4 tetrahedra that share corners with two equivalent O(6)V5 square pyramids,  a cornercorner with one O(8)V4 tetrahedra, corners with two equivalent O(2)V4 tetrahedra, corners with two equivalent O(1)V5 trigonal bipyramids, corners with three equivalent O(3)V4 trigonal pyramids, corners with three equivalent O(4)V4 trigonal pyramids, and edges with three equivalent O(1)V5 trigonal bipyramids. In the third O site, O(3) is bonded to one V(3) and three equivalent V(1) atoms to form distorted OV4 trigonal pyramids that share corners with two equivalent O(6)V5 square pyramids, corners with three equivalent O(2)V4 tetrahedra, corners with four equivalent O(1)V5 trigonal bipyramids,  a cornercorner with one O(4)V4 trigonal pyramid, corners with two equivalent O(3)V4 trigonal pyramids,  an edgeedge with one O(1)V5 trigonal bipyramid, edges with two equivalent O(3)V4 trigonal pyramids, and edges with two equivalent O(4)V4 trigonal pyramids. In the fourth O site, O(4) is bonded to one V(1), one V(2), and two equivalent V(3) atoms to form OV4 trigonal pyramids that share corners with two equivalent O(6)V5 square pyramids, corners with three equivalent O(2)V4 tetrahedra,  a cornercorner with one O(1)V5 trigonal bipyramid,  a cornercorner with one O(3)V4 trigonal pyramid, corners with two equivalent O(4)V4 trigonal pyramids,  an edgeedge with one O(6)V5 square pyramid, edges with two equivalent O(1)V5 trigonal bipyramids, and edges with two equivalent O(3)V4 trigonal pyramids. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one V(2), one V(5), and two equivalent V(4) atoms. In the sixth O site, O(6) is bonded to one V(6), two equivalent V(3), and two equivalent V(4) atoms to form OV5 square pyramids that share  a cornercorner with one O(8)V4 tetrahedra, corners with two equivalent O(2)V4 tetrahedra,  a cornercorner with one O(9)V4 trigonal pyramid, corners with two equivalent O(3)V4 trigonal pyramids, corners with two equivalent O(4)V4 trigonal pyramids, edges with two equivalent O(6)V5 square pyramids, edges with two equivalent O(8)V4 tetrahedra, and  an edgeedge with one O(4)V4 trigonal pyramid. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one V(3), two equivalent V(5), and two equivalent V(6) atoms. In the eighth O site, O(8) is bonded to one V(4) and three equivalent V(6) atoms to form OV4 tetrahedra that share  a cornercorner with one O(6)V5 square pyramid,  a cornercorner with one O(2)V4 tetrahedra, corners with two equivalent O(8)V4 tetrahedra, corners with three equivalent O(9)V4 trigonal pyramids, edges with two equivalent O(6)V5 square pyramids, and edges with two equivalent O(8)V4 tetrahedra. In the ninth O site, O(9) is bonded to one V(6) and three equivalent V(5) atoms to form OV4 trigonal pyramids that share  a cornercorner with one O(6)V5 square pyramid, corners with three equivalent O(8)V4 tetrahedra, corners with two equivalent O(9)V4 trigonal pyramids, and edges with two equivalent O(9)V4 trigonal pyramids. is represented by the CIF file [CIF]
data_V2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.110
_cell_length_b   7.645
_cell_length_c   13.395
_cell_angle_alpha   81.499
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   315.032
_cell_formula_units_Z   6
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
  V  V0  1  0.250  0.814  0.016  1.0
  V  V1  1  0.250  0.452  0.112  1.0
  V  V2  1  0.750  0.820  0.217  1.0
  V  V3  1  0.750  0.180  0.283  1.0
  V  V4  1  0.250  0.501  0.401  1.0
  V  V5  1  0.250  0.873  0.429  1.0
  V  V6  1  0.750  0.127  0.571  1.0
  V  V7  1  0.750  0.499  0.599  1.0
  V  V8  1  0.250  0.820  0.717  1.0
  V  V9  1  0.250  0.180  0.783  1.0
  V  V10  1  0.750  0.548  0.888  1.0
  V  V11  1  0.750  0.186  0.984  1.0
  O  O12  1  0.750  0.621  0.025  1.0
  O  O13  1  0.750  0.279  0.134  1.0
  O  O14  1  0.750  0.946  0.075  1.0
  O  O15  1  0.250  0.685  0.171  1.0
  O  O16  1  0.250  0.346  0.293  1.0
  O  O17  1  0.250  0.982  0.271  1.0
  O  O18  1  0.750  0.692  0.360  1.0
  O  O19  1  0.750  0.040  0.426  1.0
  O  O20  1  0.750  0.367  0.475  1.0
  O  O21  1  0.250  0.633  0.525  1.0
  O  O22  1  0.250  0.960  0.574  1.0
  O  O23  1  0.250  0.308  0.640  1.0
  O  O24  1  0.750  0.018  0.729  1.0
  O  O25  1  0.750  0.654  0.707  1.0
  O  O26  1  0.750  0.315  0.829  1.0
  O  O27  1  0.250  0.054  0.925  1.0
  O  O28  1  0.250  0.721  0.866  1.0
  O  O29  1  0.250  0.379  0.975  1.0
[/CIF]
.
The compound described by V2O3 crystallizes in the monoclinic P2_1/m space group. There are six inequivalent V sites. In the first V site, V(1) is bonded to one O(2), one O(4), two equivalent O(1), and three equivalent O(3) atoms to form distorted VO7 pentagonal bipyramids that share  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one V(4)O6 octahedra, edges with two equivalent V(3)O6 octahedra, and edges with four equivalent V(1)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 34-40°. In the second V site, V(2) is bonded in a 7-coordinate geometry to one O(4), one O(5), two equivalent O(2), and three equivalent O(1) atoms. In the third V site, V(3) is bonded to one O(3), one O(7), two equivalent O(4), and two equivalent O(6) atoms to form VO6 octahedra that share corners with two equivalent V(4)O6 octahedra, corners with two equivalent V(5)O6 octahedra,  a cornercorner with one V(1)O7 pentagonal bipyramid,  an edgeedge with one V(4)O6 octahedra, edges with two equivalent V(3)O6 octahedra, and edges with two equivalent V(1)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 15-63°. In the fourth V site, V(4) is bonded to one O(2), one O(8), two equivalent O(5), and two equivalent O(6) atoms to form VO6 octahedra that share corners with two equivalent V(3)O6 octahedra, corners with two equivalent V(5)O6 octahedra,  a cornercorner with one V(1)O7 pentagonal bipyramid,  an edgeedge with one V(3)O6 octahedra, and edges with two equivalent V(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 15-61°. In the fifth V site, V(5) is bonded to one O(5), two equivalent O(7), and three equivalent O(9) atoms to form a mixture of corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 61-63°. In the sixth V site, V(6) is bonded in a 7-coordinate geometry to one O(6), one O(9), two equivalent O(7), and three equivalent O(8) atoms. There are nine inequivalent O sites. In the first O site, O(1) is bonded to two equivalent V(1) and three equivalent V(2) atoms to form distorted OV5 trigonal bipyramids that share corners with two equivalent O(2)V4 tetrahedra,  a cornercorner with one O(4)V4 trigonal pyramid, corners with four equivalent O(3)V4 trigonal pyramids, edges with three equivalent O(2)V4 tetrahedra, edges with four equivalent O(1)V5 trigonal bipyramids,  an edgeedge with one O(3)V4 trigonal pyramid, and edges with two equivalent O(4)V4 trigonal pyramids. In the second O site, O(2) is bonded to one V(1), one V(4), and two equivalent V(2) atoms to form distorted OV4 tetrahedra that share corners with two equivalent O(6)V5 square pyramids,  a cornercorner with one O(8)V4 tetrahedra, corners with two equivalent O(2)V4 tetrahedra, corners with two equivalent O(1)V5 trigonal bipyramids, corners with three equivalent O(3)V4 trigonal pyramids, corners with three equivalent O(4)V4 trigonal pyramids, and edges with three equivalent O(1)V5 trigonal bipyramids. In the third O site, O(3) is bonded to one V(3) and three equivalent V(1) atoms to form distorted OV4 trigonal pyramids that share corners with two equivalent O(6)V5 square pyramids, corners with three equivalent O(2)V4 tetrahedra, corners with four equivalent O(1)V5 trigonal bipyramids,  a cornercorner with one O(4)V4 trigonal pyramid, corners with two equivalent O(3)V4 trigonal pyramids,  an edgeedge with one O(1)V5 trigonal bipyramid, edges with two equivalent O(3)V4 trigonal pyramids, and edges with two equivalent O(4)V4 trigonal pyramids. In the fourth O site, O(4) is bonded to one V(1), one V(2), and two equivalent V(3) atoms to form OV4 trigonal pyramids that share corners with two equivalent O(6)V5 square pyramids, corners with three equivalent O(2)V4 tetrahedra,  a cornercorner with one O(1)V5 trigonal bipyramid,  a cornercorner with one O(3)V4 trigonal pyramid, corners with two equivalent O(4)V4 trigonal pyramids,  an edgeedge with one O(6)V5 square pyramid, edges with two equivalent O(1)V5 trigonal bipyramids, and edges with two equivalent O(3)V4 trigonal pyramids. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one V(2), one V(5), and two equivalent V(4) atoms. In the sixth O site, O(6) is bonded to one V(6), two equivalent V(3), and two equivalent V(4) atoms to form OV5 square pyramids that share  a cornercorner with one O(8)V4 tetrahedra, corners with two equivalent O(2)V4 tetrahedra,  a cornercorner with one O(9)V4 trigonal pyramid, corners with two equivalent O(3)V4 trigonal pyramids, corners with two equivalent O(4)V4 trigonal pyramids, edges with two equivalent O(6)V5 square pyramids, edges with two equivalent O(8)V4 tetrahedra, and  an edgeedge with one O(4)V4 trigonal pyramid. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one V(3), two equivalent V(5), and two equivalent V(6) atoms. In the eighth O site, O(8) is bonded to one V(4) and three equivalent V(6) atoms to form OV4 tetrahedra that share  a cornercorner with one O(6)V5 square pyramid,  a cornercorner with one O(2)V4 tetrahedra, corners with two equivalent O(8)V4 tetrahedra, corners with three equivalent O(9)V4 trigonal pyramids, edges with two equivalent O(6)V5 square pyramids, and edges with two equivalent O(8)V4 tetrahedra. In the ninth O site, O(9) is bonded to one V(6) and three equivalent V(5) atoms to form OV4 trigonal pyramids that share  a cornercorner with one O(6)V5 square pyramid, corners with three equivalent O(8)V4 tetrahedra, corners with two equivalent O(9)V4 trigonal pyramids, and edges with two equivalent O(9)V4 trigonal pyramids. is represented by the CIF file [CIF]
data_V2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.110
_cell_length_b   7.645
_cell_length_c   13.395
_cell_angle_alpha   81.499
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   315.032
_cell_formula_units_Z   6
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
  V  V0  1  0.250  0.814  0.016  1.0
  V  V1  1  0.250  0.452  0.112  1.0
  V  V2  1  0.750  0.820  0.217  1.0
  V  V3  1  0.750  0.180  0.283  1.0
  V  V4  1  0.250  0.501  0.401  1.0
  V  V5  1  0.250  0.873  0.429  1.0
  V  V6  1  0.750  0.127  0.571  1.0
  V  V7  1  0.750  0.499  0.599  1.0
  V  V8  1  0.250  0.820  0.717  1.0
  V  V9  1  0.250  0.180  0.783  1.0
  V  V10  1  0.750  0.548  0.888  1.0
  V  V11  1  0.750  0.186  0.984  1.0
  O  O12  1  0.750  0.621  0.025  1.0
  O  O13  1  0.750  0.279  0.134  1.0
  O  O14  1  0.750  0.946  0.075  1.0
  O  O15  1  0.250  0.685  0.171  1.0
  O  O16  1  0.250  0.346  0.293  1.0
  O  O17  1  0.250  0.982  0.271  1.0
  O  O18  1  0.750  0.692  0.360  1.0
  O  O19  1  0.750  0.040  0.426  1.0
  O  O20  1  0.750  0.367  0.475  1.0
  O  O21  1  0.250  0.633  0.525  1.0
  O  O22  1  0.250  0.960  0.574  1.0
  O  O23  1  0.250  0.308  0.640  1.0
  O  O24  1  0.750  0.018  0.729  1.0
  O  O25  1  0.750  0.654  0.707  1.0
  O  O26  1  0.750  0.315  0.829  1.0
  O  O27  1  0.250  0.054  0.925  1.0
  O  O28  1  0.250  0.721  0.866  1.0
  O  O29  1  0.250  0.379  0.975  1.0
[/CIF]
.