The material structure described by Te2O5 crystallizes in the monoclinic P2_1 space group. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted rectangular see-saw-like geometry to one O(2), one O(3), and two equivalent O(1) atoms. In the second Te site, Te(2) is bonded to one O(2), one O(3), two equivalent O(4), and two equivalent O(5) atoms to form corner-sharing TeO6 octahedra. The corner-sharing octahedral tilt angles range from 44-46°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent Te(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Te(1) and one Te(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Te(1) and one Te(2) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Te(2) atoms. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to two equivalent Te(2) atoms. is represented by the CIF file [CIF]
data_Te2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.717
_cell_length_b   5.397
_cell_length_c   7.975
_cell_angle_alpha   104.176
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   196.854
_cell_formula_units_Z   2
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
  Te  Te0  1  0.885  0.140  0.380  1.0
  Te  Te1  1  0.385  0.860  0.620  1.0
  Te  Te2  1  0.493  0.257  0.011  1.0
  Te  Te3  1  0.993  0.743  0.989  1.0
  O  O4  1  0.039  0.875  0.508  1.0
  O  O5  1  0.539  0.125  0.492  1.0
  O  O6  1  0.173  0.665  0.774  1.0
  O  O7  1  0.673  0.335  0.226  1.0
  O  O8  1  0.797  0.835  0.206  1.0
  O  O9  1  0.297  0.165  0.794  1.0
  O  O10  1  0.731  0.965  0.902  1.0
  O  O11  1  0.231  0.035  0.098  1.0
  O  O12  1  0.733  0.468  0.907  1.0
  O  O13  1  0.233  0.532  0.093  1.0
[/CIF]
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The material structure described by Te2O5 crystallizes in the monoclinic P2_1 space group. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted rectangular see-saw-like geometry to one O(2), one O(3), and two equivalent O(1) atoms. In the second Te site, Te(2) is bonded to one O(2), one O(3), two equivalent O(4), and two equivalent O(5) atoms to form corner-sharing TeO6 octahedra. The corner-sharing octahedral tilt angles range from 44-46°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent Te(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Te(1) and one Te(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Te(1) and one Te(2) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Te(2) atoms. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to two equivalent Te(2) atoms. is represented by the CIF file [CIF]
data_Te2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.717
_cell_length_b   5.397
_cell_length_c   7.975
_cell_angle_alpha   104.176
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   196.854
_cell_formula_units_Z   2
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
  Te  Te0  1  0.885  0.140  0.380  1.0
  Te  Te1  1  0.385  0.860  0.620  1.0
  Te  Te2  1  0.493  0.257  0.011  1.0
  Te  Te3  1  0.993  0.743  0.989  1.0
  O  O4  1  0.039  0.875  0.508  1.0
  O  O5  1  0.539  0.125  0.492  1.0
  O  O6  1  0.173  0.665  0.774  1.0
  O  O7  1  0.673  0.335  0.226  1.0
  O  O8  1  0.797  0.835  0.206  1.0
  O  O9  1  0.297  0.165  0.794  1.0
  O  O10  1  0.731  0.965  0.902  1.0
  O  O11  1  0.231  0.035  0.098  1.0
  O  O12  1  0.733  0.468  0.907  1.0
  O  O13  1  0.233  0.532  0.093  1.0
[/CIF]
.