The crystal structure described by Ta2O5 crystallizes in the monoclinic C2 space group. Ta(1) is bonded in a 7-coordinate geometry to two equivalent O(2), two equivalent O(3), and three equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to three equivalent Ta(1) atoms. In the second O site, O(2) is bonded in a water-like geometry to two equivalent Ta(1) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to four equivalent Ta(1) atoms. is represented by the CIF file [CIF]
data_Ta2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.026
_cell_length_b   4.026
_cell_length_c   5.740
_cell_angle_alpha   104.976
_cell_angle_beta   109.195
_cell_angle_gamma   99.369
_symmetry_Int_Tables_number   1
_cell_volume   81.670
_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
  Ta  Ta0  1  0.932  0.844  0.705  1.0
  Ta  Ta1  1  0.139  0.227  0.295  1.0
  O  O2  1  0.987  0.786  0.355  1.0
  O  O3  1  0.274  0.889  0.039  1.0
  O  O4  1  0.778  0.278  0.500  1.0
  O  O5  1  0.850  0.235  0.961  1.0
  O  O6  1  0.431  0.632  0.645  1.0
[/CIF]
.
The crystal structure described by Ta2O5 crystallizes in the monoclinic C2 space group. Ta(1) is bonded in a 7-coordinate geometry to two equivalent O(2), two equivalent O(3), and three equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to three equivalent Ta(1) atoms. In the second O site, O(2) is bonded in a water-like geometry to two equivalent Ta(1) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to four equivalent Ta(1) atoms. is represented by the CIF file [CIF]
data_Ta2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.026
_cell_length_b   4.026
_cell_length_c   5.740
_cell_angle_alpha   104.976
_cell_angle_beta   109.195
_cell_angle_gamma   99.369
_symmetry_Int_Tables_number   1
_cell_volume   81.670
_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
  Ta  Ta0  1  0.932  0.844  0.705  1.0
  Ta  Ta1  1  0.139  0.227  0.295  1.0
  O  O2  1  0.987  0.786  0.355  1.0
  O  O3  1  0.274  0.889  0.039  1.0
  O  O4  1  0.778  0.278  0.500  1.0
  O  O5  1  0.850  0.235  0.961  1.0
  O  O6  1  0.431  0.632  0.645  1.0
[/CIF]
.