The structure described by UIr crystallizes in the monoclinic P2_1 space group. There are four inequivalent U sites. In the first U site, U(1) is bonded in a 7-coordinate geometry to one Ir(2), two equivalent Ir(1), two equivalent Ir(3), and two equivalent Ir(4) atoms. In the second U site, U(2) is bonded in a 5-coordinate geometry to one Ir(1), one Ir(2), two equivalent Ir(3), and two equivalent Ir(4) atoms. In the third U site, U(3) is bonded in a 7-coordinate geometry to one Ir(4), two equivalent Ir(1), two equivalent Ir(2), and two equivalent Ir(3) atoms. In the fourth U site, U(4) is bonded in a 7-coordinate geometry to one Ir(3), two equivalent Ir(1), two equivalent Ir(2), and two equivalent Ir(4) atoms. There are four inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 7-coordinate geometry to one U(2), two equivalent U(1), two equivalent U(3), and two equivalent U(4) atoms. In the second Ir site, Ir(2) is bonded in a 6-coordinate geometry to one U(1), one U(2), two equivalent U(3), and two equivalent U(4) atoms. In the third Ir site, Ir(3) is bonded in a 7-coordinate geometry to one U(4), two equivalent U(1), two equivalent U(2), and two equivalent U(3) atoms. In the fourth Ir site, Ir(4) is bonded in a 7-coordinate geometry to one U(3), two equivalent U(1), two equivalent U(2), and two equivalent U(4) atoms. is represented by the CIF file [CIF]
data_UIr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.630
_cell_length_b   5.598
_cell_length_c   5.614
_cell_angle_alpha   81.612
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   330.525
_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  0.496  0.103  0.869  1.0
  U  U1  1  0.996  0.897  0.131  1.0
  U  U2  1  0.492  0.653  0.387  1.0
  U  U3  1  0.992  0.347  0.613  1.0
  U  U4  1  0.222  0.401  0.143  1.0
  U  U5  1  0.722  0.599  0.857  1.0
  U  U6  1  0.225  0.843  0.604  1.0
  U  U7  1  0.725  0.157  0.396  1.0
  Ir  Ir8  1  0.758  0.095  0.901  1.0
  Ir  Ir9  1  0.258  0.905  0.099  1.0
  Ir  Ir10  1  0.755  0.660  0.349  1.0
  Ir  Ir11  1  0.255  0.340  0.651  1.0
  Ir  Ir12  1  0.959  0.398  0.107  1.0
  Ir  Ir13  1  0.459  0.602  0.893  1.0
  Ir  Ir14  1  0.960  0.847  0.639  1.0
  Ir  Ir15  1  0.460  0.153  0.361  1.0
[/CIF]
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The structure described by UIr crystallizes in the monoclinic P2_1 space group. There are four inequivalent U sites. In the first U site, U(1) is bonded in a 7-coordinate geometry to one Ir(2), two equivalent Ir(1), two equivalent Ir(3), and two equivalent Ir(4) atoms. In the second U site, U(2) is bonded in a 5-coordinate geometry to one Ir(1), one Ir(2), two equivalent Ir(3), and two equivalent Ir(4) atoms. In the third U site, U(3) is bonded in a 7-coordinate geometry to one Ir(4), two equivalent Ir(1), two equivalent Ir(2), and two equivalent Ir(3) atoms. In the fourth U site, U(4) is bonded in a 7-coordinate geometry to one Ir(3), two equivalent Ir(1), two equivalent Ir(2), and two equivalent Ir(4) atoms. There are four inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 7-coordinate geometry to one U(2), two equivalent U(1), two equivalent U(3), and two equivalent U(4) atoms. In the second Ir site, Ir(2) is bonded in a 6-coordinate geometry to one U(1), one U(2), two equivalent U(3), and two equivalent U(4) atoms. In the third Ir site, Ir(3) is bonded in a 7-coordinate geometry to one U(4), two equivalent U(1), two equivalent U(2), and two equivalent U(3) atoms. In the fourth Ir site, Ir(4) is bonded in a 7-coordinate geometry to one U(3), two equivalent U(1), two equivalent U(2), and two equivalent U(4) atoms. is represented by the CIF file [CIF]
data_UIr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.630
_cell_length_b   5.598
_cell_length_c   5.614
_cell_angle_alpha   81.612
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   330.525
_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  0.496  0.103  0.869  1.0
  U  U1  1  0.996  0.897  0.131  1.0
  U  U2  1  0.492  0.653  0.387  1.0
  U  U3  1  0.992  0.347  0.613  1.0
  U  U4  1  0.222  0.401  0.143  1.0
  U  U5  1  0.722  0.599  0.857  1.0
  U  U6  1  0.225  0.843  0.604  1.0
  U  U7  1  0.725  0.157  0.396  1.0
  Ir  Ir8  1  0.758  0.095  0.901  1.0
  Ir  Ir9  1  0.258  0.905  0.099  1.0
  Ir  Ir10  1  0.755  0.660  0.349  1.0
  Ir  Ir11  1  0.255  0.340  0.651  1.0
  Ir  Ir12  1  0.959  0.398  0.107  1.0
  Ir  Ir13  1  0.459  0.602  0.893  1.0
  Ir  Ir14  1  0.960  0.847  0.639  1.0
  Ir  Ir15  1  0.460  0.153  0.361  1.0
[/CIF]
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