The material described by U crystallizes in the monoclinic C2/c space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 10-coordinate geometry to two equivalent U(1) and eight equivalent U(2) atoms. In the second U site, U(2) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent U(2) atoms. is represented by the CIF card [CIF]
data_U
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.477
_cell_length_b   5.477
_cell_length_c   5.587
_cell_angle_alpha   60.208
_cell_angle_beta   60.208
_cell_angle_gamma   81.126
_symmetry_Int_Tables_number   1
_cell_volume   125.244
_cell_formula_units_Z   6
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  0.179  0.821  0.250  1.0
  U  U1  1  0.821  0.179  0.750  1.0
  U  U2  1  0.196  0.361  0.870  1.0
  U  U3  1  0.639  0.804  0.630  1.0
  U  U4  1  0.804  0.639  0.130  1.0
  U  U5  1  0.361  0.196  0.370  1.0
[/CIF]
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The material described by U crystallizes in the monoclinic C2/c space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 10-coordinate geometry to two equivalent U(1) and eight equivalent U(2) atoms. In the second U site, U(2) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent U(2) atoms. is represented by the CIF card [CIF]
data_U
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.477
_cell_length_b   5.477
_cell_length_c   5.587
_cell_angle_alpha   60.208
_cell_angle_beta   60.208
_cell_angle_gamma   81.126
_symmetry_Int_Tables_number   1
_cell_volume   125.244
_cell_formula_units_Z   6
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  0.179  0.821  0.250  1.0
  U  U1  1  0.821  0.179  0.750  1.0
  U  U2  1  0.196  0.361  0.870  1.0
  U  U3  1  0.639  0.804  0.630  1.0
  U  U4  1  0.804  0.639  0.130  1.0
  U  U5  1  0.361  0.196  0.370  1.0
[/CIF]
.