The compound described by Ir3Cr is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Cr(1) is bonded to twelve equivalent Ir(1) atoms to form CrIr12 cuboctahedra that share corners with twelve equivalent Cr(1)Ir12 cuboctahedra, edges with twenty-four equivalent Ir(1)Cr4Ir8 cuboctahedra, faces with six equivalent Cr(1)Ir12 cuboctahedra, and faces with twelve equivalent Ir(1)Cr4Ir8 cuboctahedra. Ir(1) is bonded to four equivalent Cr(1) and eight equivalent Ir(1) atoms to form distorted IrCr4Ir8 cuboctahedra that share corners with twelve equivalent Ir(1)Cr4Ir8 cuboctahedra, edges with eight equivalent Cr(1)Ir12 cuboctahedra, edges with sixteen equivalent Ir(1)Cr4Ir8 cuboctahedra, faces with four equivalent Cr(1)Ir12 cuboctahedra, and faces with fourteen equivalent Ir(1)Cr4Ir8 cuboctahedra. is represented by the CIF file [CIF]
data_CrIr3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.814
_cell_length_b   3.814
_cell_length_c   3.814
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   55.487
_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
  Cr  Cr0  1  0.000  0.000  0.000  1.0
  Ir  Ir1  1  0.000  0.500  0.500  1.0
  Ir  Ir2  1  0.500  0.500  0.000  1.0
  Ir  Ir3  1  0.500  0.000  0.500  1.0
[/CIF]
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The compound described by Ir3Cr is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Cr(1) is bonded to twelve equivalent Ir(1) atoms to form CrIr12 cuboctahedra that share corners with twelve equivalent Cr(1)Ir12 cuboctahedra, edges with twenty-four equivalent Ir(1)Cr4Ir8 cuboctahedra, faces with six equivalent Cr(1)Ir12 cuboctahedra, and faces with twelve equivalent Ir(1)Cr4Ir8 cuboctahedra. Ir(1) is bonded to four equivalent Cr(1) and eight equivalent Ir(1) atoms to form distorted IrCr4Ir8 cuboctahedra that share corners with twelve equivalent Ir(1)Cr4Ir8 cuboctahedra, edges with eight equivalent Cr(1)Ir12 cuboctahedra, edges with sixteen equivalent Ir(1)Cr4Ir8 cuboctahedra, faces with four equivalent Cr(1)Ir12 cuboctahedra, and faces with fourteen equivalent Ir(1)Cr4Ir8 cuboctahedra. is represented by the CIF file [CIF]
data_CrIr3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.814
_cell_length_b   3.814
_cell_length_c   3.814
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   55.487
_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
  Cr  Cr0  1  0.000  0.000  0.000  1.0
  Ir  Ir1  1  0.000  0.500  0.500  1.0
  Ir  Ir2  1  0.500  0.500  0.000  1.0
  Ir  Ir3  1  0.500  0.000  0.500  1.0
[/CIF]
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