The structure described by Ta2O5 crystallizes in the tetragonal I4/mmm space group. Ta(1) is bonded to one O(1) and four equivalent O(2) atoms to form distorted corner-sharing TaO5 trigonal bipyramids. There are two inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to two equivalent Ta(1) atoms. In the second O site, O(2) is bonded in a linear geometry to two equivalent Ta(1) atoms. is represented by the CIF card [CIF]
data_Ta2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.086
_cell_length_b   6.086
_cell_length_c   6.086
_cell_angle_alpha   128.340
_cell_angle_beta   128.340
_cell_angle_gamma   76.074
_symmetry_Int_Tables_number   1
_cell_volume   134.826
_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  0.198  0.198  0.000  1.0
  Ta  Ta1  1  0.802  0.802  0.000  1.0
  O  O2  1  0.000  0.000  0.000  1.0
  O  O3  1  0.500  0.000  0.000  1.0
  O  O4  1  0.000  0.500  0.000  1.0
  O  O5  1  0.000  0.000  0.500  1.0
  O  O6  1  0.500  0.500  0.500  1.0
[/CIF]
.
The structure described by Ta2O5 crystallizes in the tetragonal I4/mmm space group. Ta(1) is bonded to one O(1) and four equivalent O(2) atoms to form distorted corner-sharing TaO5 trigonal bipyramids. There are two inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to two equivalent Ta(1) atoms. In the second O site, O(2) is bonded in a linear geometry to two equivalent Ta(1) atoms. is represented by the CIF card [CIF]
data_Ta2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.086
_cell_length_b   6.086
_cell_length_c   6.086
_cell_angle_alpha   128.340
_cell_angle_beta   128.340
_cell_angle_gamma   76.074
_symmetry_Int_Tables_number   1
_cell_volume   134.826
_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  0.198  0.198  0.000  1.0
  Ta  Ta1  1  0.802  0.802  0.000  1.0
  O  O2  1  0.000  0.000  0.000  1.0
  O  O3  1  0.500  0.000  0.000  1.0
  O  O4  1  0.000  0.500  0.000  1.0
  O  O5  1  0.000  0.000  0.500  1.0
  O  O6  1  0.500  0.500  0.500  1.0
[/CIF]
.