The structure described by IrNi crystallizes in the trigonal R-3m space group. Ir(1) is bonded to six equivalent Ir(1) and six equivalent Ni(1) atoms to form distorted IrNi6Ir6 cuboctahedra that share corners with twelve equivalent Ir(1)Ni6Ir6 cuboctahedra, edges with twelve equivalent Ir(1)Ni6Ir6 cuboctahedra, edges with twelve equivalent Ni(1)Ni6Ir6 cuboctahedra, faces with six equivalent Ir(1)Ni6Ir6 cuboctahedra, and faces with twelve equivalent Ni(1)Ni6Ir6 cuboctahedra. Ni(1) is bonded to six equivalent Ir(1) and six equivalent Ni(1) atoms to form distorted NiNi6Ir6 cuboctahedra that share corners with twelve equivalent Ni(1)Ni6Ir6 cuboctahedra, edges with twelve equivalent Ir(1)Ni6Ir6 cuboctahedra, edges with twelve equivalent Ni(1)Ni6Ir6 cuboctahedra, faces with six equivalent Ni(1)Ni6Ir6 cuboctahedra, and faces with twelve equivalent Ir(1)Ni6Ir6 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_NiIr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.391
_cell_length_b   4.391
_cell_length_c   4.391
_cell_angle_alpha   35.293
_cell_angle_beta   35.293
_cell_angle_gamma   35.293
_symmetry_Int_Tables_number   1
_cell_volume   25.239
_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
  Ni  Ni0  1  0.500  0.500  0.500  1.0
  Ir  Ir1  1  0.000  0.000  0.000  1.0
[/CIF]
.
The structure described by IrNi crystallizes in the trigonal R-3m space group. Ir(1) is bonded to six equivalent Ir(1) and six equivalent Ni(1) atoms to form distorted IrNi6Ir6 cuboctahedra that share corners with twelve equivalent Ir(1)Ni6Ir6 cuboctahedra, edges with twelve equivalent Ir(1)Ni6Ir6 cuboctahedra, edges with twelve equivalent Ni(1)Ni6Ir6 cuboctahedra, faces with six equivalent Ir(1)Ni6Ir6 cuboctahedra, and faces with twelve equivalent Ni(1)Ni6Ir6 cuboctahedra. Ni(1) is bonded to six equivalent Ir(1) and six equivalent Ni(1) atoms to form distorted NiNi6Ir6 cuboctahedra that share corners with twelve equivalent Ni(1)Ni6Ir6 cuboctahedra, edges with twelve equivalent Ir(1)Ni6Ir6 cuboctahedra, edges with twelve equivalent Ni(1)Ni6Ir6 cuboctahedra, faces with six equivalent Ni(1)Ni6Ir6 cuboctahedra, and faces with twelve equivalent Ir(1)Ni6Ir6 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_NiIr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.391
_cell_length_b   4.391
_cell_length_c   4.391
_cell_angle_alpha   35.293
_cell_angle_beta   35.293
_cell_angle_gamma   35.293
_symmetry_Int_Tables_number   1
_cell_volume   25.239
_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
  Ni  Ni0  1  0.500  0.500  0.500  1.0
  Ir  Ir1  1  0.000  0.000  0.000  1.0
[/CIF]
.