The compound described by U is alpha Np structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 4-coordinate geometry to four equivalent U(2) atoms. In the second U site, U(2) is bonded in a 4-coordinate geometry to four equivalent U(1) atoms. is represented by the CIF card [CIF]
data_U
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.723
_cell_length_b   4.980
_cell_length_c   4.787
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   160.284
_cell_formula_units_Z   8
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  0.813  0.342  0.250  1.0
  U  U1  1  0.313  0.158  0.250  1.0
  U  U2  1  0.187  0.658  0.750  1.0
  U  U3  1  0.687  0.842  0.750  1.0
  U  U4  1  0.531  0.711  0.250  1.0
  U  U5  1  0.031  0.789  0.250  1.0
  U  U6  1  0.469  0.289  0.750  1.0
  U  U7  1  0.969  0.211  0.750  1.0
[/CIF]
.
The compound described by U is alpha Np structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 4-coordinate geometry to four equivalent U(2) atoms. In the second U site, U(2) is bonded in a 4-coordinate geometry to four equivalent U(1) atoms. is represented by the CIF card [CIF]
data_U
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.723
_cell_length_b   4.980
_cell_length_c   4.787
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   160.284
_cell_formula_units_Z   8
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  0.813  0.342  0.250  1.0
  U  U1  1  0.313  0.158  0.250  1.0
  U  U2  1  0.187  0.658  0.750  1.0
  U  U3  1  0.687  0.842  0.750  1.0
  U  U4  1  0.531  0.711  0.250  1.0
  U  U5  1  0.031  0.789  0.250  1.0
  U  U6  1  0.469  0.289  0.750  1.0
  U  U7  1  0.969  0.211  0.750  1.0
[/CIF]
.