The crystal structure described by Pm2IrCu is Heusler structured and crystallizes in the cubic Fm-3m space group. Pm(1) is bonded in a body-centered cubic geometry to four equivalent Ir(1) and four equivalent Cu(1) atoms. Ir(1) is bonded in a body-centered cubic geometry to eight equivalent Pm(1) atoms. Cu(1) is bonded in a body-centered cubic geometry to eight equivalent Pm(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pm2CuIr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.974
_cell_length_b   4.971
_cell_length_c   4.969
_cell_angle_alpha   60.011
_cell_angle_beta   60.032
_cell_angle_gamma   60.058
_symmetry_Int_Tables_number   1
_cell_volume   86.945
_cell_formula_units_Z   1
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
  Pm  Pm0  1  1.000  0.000  0.000  1.0
  Pm  Pm1  1  0.500  0.500  0.500  1.0
  Cu  Cu2  1  0.250  0.250  0.250  1.0
  Ir  Ir3  1  0.750  0.750  0.750  1.0
[/CIF]
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The crystal structure described by Pm2IrCu is Heusler structured and crystallizes in the cubic Fm-3m space group. Pm(1) is bonded in a body-centered cubic geometry to four equivalent Ir(1) and four equivalent Cu(1) atoms. Ir(1) is bonded in a body-centered cubic geometry to eight equivalent Pm(1) atoms. Cu(1) is bonded in a body-centered cubic geometry to eight equivalent Pm(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pm2CuIr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.974
_cell_length_b   4.971
_cell_length_c   4.969
_cell_angle_alpha   60.011
_cell_angle_beta   60.032
_cell_angle_gamma   60.058
_symmetry_Int_Tables_number   1
_cell_volume   86.945
_cell_formula_units_Z   1
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
  Pm  Pm0  1  1.000  0.000  0.000  1.0
  Pm  Pm1  1  0.500  0.500  0.500  1.0
  Cu  Cu2  1  0.250  0.250  0.250  1.0
  Ir  Ir3  1  0.750  0.750  0.750  1.0
[/CIF]
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