The material described by UIr crystallizes in the monoclinic P2_1/c space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 7-coordinate geometry to three equivalent Ir(2) and four equivalent Ir(1) atoms. In the second U site, U(2) is bonded in a 5-coordinate geometry to three equivalent Ir(1) and four equivalent Ir(2) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 7-coordinate geometry to three equivalent U(2), four equivalent U(1), and two equivalent Ir(2) atoms. In the second Ir site, Ir(2) is bonded in a 10-coordinate geometry to three equivalent U(1), four equivalent U(2), one Ir(2), and two equivalent Ir(1) atoms. is represented by the CIF file [CIF]
data_UIr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.560
_cell_length_b   5.594
_cell_length_c   5.641
_cell_angle_alpha   80.619
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   328.784
_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  0.861  0.348  0.863  1.0
  U  U1  1  0.361  0.152  0.137  1.0
  U  U2  1  0.867  0.912  0.394  1.0
  U  U3  1  0.367  0.588  0.606  1.0
  U  U4  1  0.139  0.652  0.137  1.0
  U  U5  1  0.639  0.848  0.863  1.0
  U  U6  1  0.133  0.088  0.606  1.0
  U  U7  1  0.633  0.412  0.394  1.0
  Ir  Ir8  1  0.600  0.339  0.909  1.0
  Ir  Ir9  1  0.100  0.161  0.091  1.0
  Ir  Ir10  1  0.604  0.912  0.357  1.0
  Ir  Ir11  1  0.104  0.588  0.643  1.0
  Ir  Ir12  1  0.400  0.661  0.091  1.0
  Ir  Ir13  1  0.900  0.839  0.909  1.0
  Ir  Ir14  1  0.396  0.088  0.643  1.0
  Ir  Ir15  1  0.896  0.412  0.357  1.0
[/CIF]
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The material described by UIr crystallizes in the monoclinic P2_1/c space group. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 7-coordinate geometry to three equivalent Ir(2) and four equivalent Ir(1) atoms. In the second U site, U(2) is bonded in a 5-coordinate geometry to three equivalent Ir(1) and four equivalent Ir(2) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 7-coordinate geometry to three equivalent U(2), four equivalent U(1), and two equivalent Ir(2) atoms. In the second Ir site, Ir(2) is bonded in a 10-coordinate geometry to three equivalent U(1), four equivalent U(2), one Ir(2), and two equivalent Ir(1) atoms. is represented by the CIF file [CIF]
data_UIr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.560
_cell_length_b   5.594
_cell_length_c   5.641
_cell_angle_alpha   80.619
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   328.784
_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  0.861  0.348  0.863  1.0
  U  U1  1  0.361  0.152  0.137  1.0
  U  U2  1  0.867  0.912  0.394  1.0
  U  U3  1  0.367  0.588  0.606  1.0
  U  U4  1  0.139  0.652  0.137  1.0
  U  U5  1  0.639  0.848  0.863  1.0
  U  U6  1  0.133  0.088  0.606  1.0
  U  U7  1  0.633  0.412  0.394  1.0
  Ir  Ir8  1  0.600  0.339  0.909  1.0
  Ir  Ir9  1  0.100  0.161  0.091  1.0
  Ir  Ir10  1  0.604  0.912  0.357  1.0
  Ir  Ir11  1  0.104  0.588  0.643  1.0
  Ir  Ir12  1  0.400  0.661  0.091  1.0
  Ir  Ir13  1  0.900  0.839  0.909  1.0
  Ir  Ir14  1  0.396  0.088  0.643  1.0
  Ir  Ir15  1  0.896  0.412  0.357  1.0
[/CIF]
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