The compound described by YO2 crystallizes in the monoclinic P2_1/c space group. Y(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form a mixture of distorted edge and corner-sharing YO6 pentagonal pyramids. There are two inequivalent O sites. In the first O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Y(1) atoms. In the second O site, O(1) is bonded in a distorted T-shaped geometry to three equivalent Y(1) atoms. is represented by the CIF file [CIF]
data_YO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.351
_cell_length_b   4.351
_cell_length_c   6.575
_cell_angle_alpha   109.138
_cell_angle_beta   109.138
_cell_angle_gamma   90.278
_symmetry_Int_Tables_number   1
_cell_volume   110.198
_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
  O  O0  1  0.054  0.329  0.652  1.0
  O  O1  1  0.671  0.946  0.848  1.0
  O  O2  1  0.946  0.671  0.348  1.0
  O  O3  1  0.329  0.054  0.152  1.0
  Y  Y4  1  0.123  0.877  0.750  1.0
  Y  Y5  1  0.877  0.123  0.250  1.0
[/CIF]
.
The compound described by YO2 crystallizes in the monoclinic P2_1/c space group. Y(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form a mixture of distorted edge and corner-sharing YO6 pentagonal pyramids. There are two inequivalent O sites. In the first O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Y(1) atoms. In the second O site, O(1) is bonded in a distorted T-shaped geometry to three equivalent Y(1) atoms. is represented by the CIF file [CIF]
data_YO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.351
_cell_length_b   4.351
_cell_length_c   6.575
_cell_angle_alpha   109.138
_cell_angle_beta   109.138
_cell_angle_gamma   90.278
_symmetry_Int_Tables_number   1
_cell_volume   110.198
_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
  O  O0  1  0.054  0.329  0.652  1.0
  O  O1  1  0.671  0.946  0.848  1.0
  O  O2  1  0.946  0.671  0.348  1.0
  O  O3  1  0.329  0.054  0.152  1.0
  Y  Y4  1  0.123  0.877  0.750  1.0
  Y  Y5  1  0.877  0.123  0.250  1.0
[/CIF]
.