The structure described by Er5Ir2 crystallizes in the monoclinic C2/c space group. There are three inequivalent Er sites. In the first Er site, Er(1) is bonded in a 2-coordinate geometry to three equivalent Ir(1) atoms. In the second Er site, Er(3) is bonded to four equivalent Ir(1) atoms to form distorted edge-sharing ErIr4 tetrahedra. In the third Er site, Er(2) is bonded in a 3-coordinate geometry to three equivalent Ir(1) atoms. Ir(1) is bonded in a 8-coordinate geometry to two equivalent Er(3), three equivalent Er(1), and three equivalent Er(2) atoms. is represented by the CIF file [CIF]
data_Er5Ir2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.464
_cell_length_b   7.162
_cell_length_c   8.411
_cell_angle_alpha   96.323
_cell_angle_beta   112.597
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   356.877
_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
  Er  Er0  1  0.970  0.918  0.182  1.0
  Er  Er1  1  0.788  0.582  0.818  1.0
  Er  Er2  1  0.030  0.082  0.818  1.0
  Er  Er3  1  0.212  0.418  0.182  1.0
  Er  Er4  1  0.654  0.819  0.443  1.0
  Er  Er5  1  0.211  0.681  0.557  1.0
  Er  Er6  1  0.346  0.181  0.557  1.0
  Er  Er7  1  0.789  0.319  0.443  1.0
  Er  Er8  1  0.427  0.750  0.000  1.0
  Er  Er9  1  0.573  0.250  0.000  1.0
  Ir  Ir10  1  0.827  0.573  0.219  1.0
  Ir  Ir11  1  0.609  0.927  0.781  1.0
  Ir  Ir12  1  0.173  0.427  0.781  1.0
  Ir  Ir13  1  0.391  0.073  0.219  1.0
[/CIF]
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The structure described by Er5Ir2 crystallizes in the monoclinic C2/c space group. There are three inequivalent Er sites. In the first Er site, Er(1) is bonded in a 2-coordinate geometry to three equivalent Ir(1) atoms. In the second Er site, Er(3) is bonded to four equivalent Ir(1) atoms to form distorted edge-sharing ErIr4 tetrahedra. In the third Er site, Er(2) is bonded in a 3-coordinate geometry to three equivalent Ir(1) atoms. Ir(1) is bonded in a 8-coordinate geometry to two equivalent Er(3), three equivalent Er(1), and three equivalent Er(2) atoms. is represented by the CIF file [CIF]
data_Er5Ir2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.464
_cell_length_b   7.162
_cell_length_c   8.411
_cell_angle_alpha   96.323
_cell_angle_beta   112.597
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   356.877
_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
  Er  Er0  1  0.970  0.918  0.182  1.0
  Er  Er1  1  0.788  0.582  0.818  1.0
  Er  Er2  1  0.030  0.082  0.818  1.0
  Er  Er3  1  0.212  0.418  0.182  1.0
  Er  Er4  1  0.654  0.819  0.443  1.0
  Er  Er5  1  0.211  0.681  0.557  1.0
  Er  Er6  1  0.346  0.181  0.557  1.0
  Er  Er7  1  0.789  0.319  0.443  1.0
  Er  Er8  1  0.427  0.750  0.000  1.0
  Er  Er9  1  0.573  0.250  0.000  1.0
  Ir  Ir10  1  0.827  0.573  0.219  1.0
  Ir  Ir11  1  0.609  0.927  0.781  1.0
  Ir  Ir12  1  0.173  0.427  0.781  1.0
  Ir  Ir13  1  0.391  0.073  0.219  1.0
[/CIF]
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