The material structure described by I2O5 crystallizes in the monoclinic P2_1/c space group. There are five inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one I(1) and one I(2) atom. In the second O site, O(2) is bonded in a single-bond geometry to one I(1) and one I(2) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent I(2) atoms. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one I(1) and one I(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to two equivalent I(1) atoms. There are two inequivalent I sites. In the first I site, I(1) is bonded to one O(1), one O(2), one O(4), and two equivalent O(5) atoms to form distorted corner-sharing IO5 square pyramids. In the second I site, I(2) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), and two equivalent O(3) atoms. is represented by the CIF file [CIF]
data_I2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.029
_cell_length_b   8.169
_cell_length_c   10.956
_cell_angle_alpha   107.312
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   429.707
_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
  I  I0  1  0.826  0.657  0.374  1.0
  I  I1  1  0.326  0.843  0.626  1.0
  I  I2  1  0.174  0.343  0.626  1.0
  I  I3  1  0.674  0.157  0.374  1.0
  I  I4  1  0.377  0.716  0.126  1.0
  I  I5  1  0.877  0.784  0.874  1.0
  I  I6  1  0.623  0.284  0.874  1.0
  I  I7  1  0.123  0.216  0.126  1.0
  O  O8  1  0.533  0.623  0.250  1.0
  O  O9  1  0.033  0.877  0.750  1.0
  O  O10  1  0.467  0.377  0.750  1.0
  O  O11  1  0.967  0.123  0.250  1.0
  O  O12  1  0.011  0.798  0.310  1.0
  O  O13  1  0.511  0.702  0.690  1.0
  O  O14  1  0.989  0.202  0.690  1.0
  O  O15  1  0.489  0.298  0.310  1.0
  O  O16  1  0.847  0.155  0.014  1.0
  O  O17  1  0.347  0.345  0.986  1.0
  O  O18  1  0.153  0.845  0.986  1.0
  O  O19  1  0.653  0.655  0.014  1.0
  O  O20  1  0.038  0.436  0.196  1.0
  O  O21  1  0.538  0.064  0.804  1.0
  O  O22  1  0.962  0.564  0.804  1.0
  O  O23  1  0.462  0.936  0.196  1.0
  O  O24  1  0.851  0.335  0.491  1.0
  O  O25  1  0.351  0.165  0.509  1.0
  O  O26  1  0.149  0.665  0.509  1.0
  O  O27  1  0.649  0.835  0.491  1.0
[/CIF]
.
The material structure described by I2O5 crystallizes in the monoclinic P2_1/c space group. There are five inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one I(1) and one I(2) atom. In the second O site, O(2) is bonded in a single-bond geometry to one I(1) and one I(2) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent I(2) atoms. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one I(1) and one I(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to two equivalent I(1) atoms. There are two inequivalent I sites. In the first I site, I(1) is bonded to one O(1), one O(2), one O(4), and two equivalent O(5) atoms to form distorted corner-sharing IO5 square pyramids. In the second I site, I(2) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), and two equivalent O(3) atoms. is represented by the CIF file [CIF]
data_I2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.029
_cell_length_b   8.169
_cell_length_c   10.956
_cell_angle_alpha   107.312
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   429.707
_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
  I  I0  1  0.826  0.657  0.374  1.0
  I  I1  1  0.326  0.843  0.626  1.0
  I  I2  1  0.174  0.343  0.626  1.0
  I  I3  1  0.674  0.157  0.374  1.0
  I  I4  1  0.377  0.716  0.126  1.0
  I  I5  1  0.877  0.784  0.874  1.0
  I  I6  1  0.623  0.284  0.874  1.0
  I  I7  1  0.123  0.216  0.126  1.0
  O  O8  1  0.533  0.623  0.250  1.0
  O  O9  1  0.033  0.877  0.750  1.0
  O  O10  1  0.467  0.377  0.750  1.0
  O  O11  1  0.967  0.123  0.250  1.0
  O  O12  1  0.011  0.798  0.310  1.0
  O  O13  1  0.511  0.702  0.690  1.0
  O  O14  1  0.989  0.202  0.690  1.0
  O  O15  1  0.489  0.298  0.310  1.0
  O  O16  1  0.847  0.155  0.014  1.0
  O  O17  1  0.347  0.345  0.986  1.0
  O  O18  1  0.153  0.845  0.986  1.0
  O  O19  1  0.653  0.655  0.014  1.0
  O  O20  1  0.038  0.436  0.196  1.0
  O  O21  1  0.538  0.064  0.804  1.0
  O  O22  1  0.962  0.564  0.804  1.0
  O  O23  1  0.462  0.936  0.196  1.0
  O  O24  1  0.851  0.335  0.491  1.0
  O  O25  1  0.351  0.165  0.509  1.0
  O  O26  1  0.149  0.665  0.509  1.0
  O  O27  1  0.649  0.835  0.491  1.0
[/CIF]
.