The structure described by UO2(OH)2 crystallizes in the monoclinic P2_1/c space group. U(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form corner-sharing UO6 octahedra. The corner-sharing octahedral tilt angles are 41°. H(1) is bonded in a single-bond geometry to one O(1) and one O(2) atom. There are two inequivalent O sites. In the first O site, O(2) is bonded in a 3-coordinate geometry to two equivalent U(1) and one H(1) atom. In the second O site, O(1) is bonded in a bent 150 degrees geometry to one U(1) and one H(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_U(HO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.318
_cell_length_b   5.491
_cell_length_c   6.108
_cell_angle_alpha   70.812
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   168.455
_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
  U  U0  1  0.500  0.000  0.500  1.0
  U  U1  1  0.000  0.000  0.000  1.0
  H  H2  1  0.693  0.472  0.641  1.0
  H  H3  1  0.193  0.528  0.859  1.0
  H  H4  1  0.307  0.528  0.359  1.0
  H  H5  1  0.807  0.472  0.141  1.0
  O  O6  1  0.683  0.659  0.627  1.0
  O  O7  1  0.183  0.341  0.873  1.0
  O  O8  1  0.317  0.341  0.373  1.0
  O  O9  1  0.817  0.659  0.127  1.0
  O  O10  1  0.217  0.855  0.805  1.0
  O  O11  1  0.717  0.145  0.695  1.0
  O  O12  1  0.783  0.145  0.195  1.0
  O  O13  1  0.283  0.855  0.305  1.0
[/CIF]
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The structure described by UO2(OH)2 crystallizes in the monoclinic P2_1/c space group. U(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form corner-sharing UO6 octahedra. The corner-sharing octahedral tilt angles are 41°. H(1) is bonded in a single-bond geometry to one O(1) and one O(2) atom. There are two inequivalent O sites. In the first O site, O(2) is bonded in a 3-coordinate geometry to two equivalent U(1) and one H(1) atom. In the second O site, O(1) is bonded in a bent 150 degrees geometry to one U(1) and one H(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_U(HO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.318
_cell_length_b   5.491
_cell_length_c   6.108
_cell_angle_alpha   70.812
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   168.455
_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
  U  U0  1  0.500  0.000  0.500  1.0
  U  U1  1  0.000  0.000  0.000  1.0
  H  H2  1  0.693  0.472  0.641  1.0
  H  H3  1  0.193  0.528  0.859  1.0
  H  H4  1  0.307  0.528  0.359  1.0
  H  H5  1  0.807  0.472  0.141  1.0
  O  O6  1  0.683  0.659  0.627  1.0
  O  O7  1  0.183  0.341  0.873  1.0
  O  O8  1  0.317  0.341  0.373  1.0
  O  O9  1  0.817  0.659  0.127  1.0
  O  O10  1  0.217  0.855  0.805  1.0
  O  O11  1  0.717  0.145  0.695  1.0
  O  O12  1  0.783  0.145  0.195  1.0
  O  O13  1  0.283  0.855  0.305  1.0
[/CIF]
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