The material described by FeRh crystallizes in the trigonal R-3m space group. Fe(1) is bonded to six equivalent Fe(1) and six equivalent Rh(1) atoms to form distorted FeFe6Rh6 cuboctahedra that share corners with twelve equivalent Fe(1)Fe6Rh6 cuboctahedra, edges with twelve equivalent Fe(1)Fe6Rh6 cuboctahedra, edges with twelve equivalent Rh(1)Fe6Rh6 cuboctahedra, faces with six equivalent Fe(1)Fe6Rh6 cuboctahedra, and faces with twelve equivalent Rh(1)Fe6Rh6 cuboctahedra. Rh(1) is bonded to six equivalent Fe(1) and six equivalent Rh(1) atoms to form distorted RhFe6Rh6 cuboctahedra that share corners with twelve equivalent Rh(1)Fe6Rh6 cuboctahedra, edges with twelve equivalent Fe(1)Fe6Rh6 cuboctahedra, edges with twelve equivalent Rh(1)Fe6Rh6 cuboctahedra, faces with six equivalent Rh(1)Fe6Rh6 cuboctahedra, and faces with twelve equivalent Fe(1)Fe6Rh6 cuboctahedra. is represented by the CIF file [CIF]
data_FeRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.539
_cell_length_b   4.539
_cell_length_c   4.539
_cell_angle_alpha   34.635
_cell_angle_beta   34.635
_cell_angle_gamma   34.635
_symmetry_Int_Tables_number   1
_cell_volume   26.961
_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
  Fe  Fe0  1  0.000  0.000  0.000  1.0
  Rh  Rh1  1  0.500  0.500  0.500  1.0
[/CIF]
.
The material described by FeRh crystallizes in the trigonal R-3m space group. Fe(1) is bonded to six equivalent Fe(1) and six equivalent Rh(1) atoms to form distorted FeFe6Rh6 cuboctahedra that share corners with twelve equivalent Fe(1)Fe6Rh6 cuboctahedra, edges with twelve equivalent Fe(1)Fe6Rh6 cuboctahedra, edges with twelve equivalent Rh(1)Fe6Rh6 cuboctahedra, faces with six equivalent Fe(1)Fe6Rh6 cuboctahedra, and faces with twelve equivalent Rh(1)Fe6Rh6 cuboctahedra. Rh(1) is bonded to six equivalent Fe(1) and six equivalent Rh(1) atoms to form distorted RhFe6Rh6 cuboctahedra that share corners with twelve equivalent Rh(1)Fe6Rh6 cuboctahedra, edges with twelve equivalent Fe(1)Fe6Rh6 cuboctahedra, edges with twelve equivalent Rh(1)Fe6Rh6 cuboctahedra, faces with six equivalent Rh(1)Fe6Rh6 cuboctahedra, and faces with twelve equivalent Fe(1)Fe6Rh6 cuboctahedra. is represented by the CIF file [CIF]
data_FeRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.539
_cell_length_b   4.539
_cell_length_c   4.539
_cell_angle_alpha   34.635
_cell_angle_beta   34.635
_cell_angle_gamma   34.635
_symmetry_Int_Tables_number   1
_cell_volume   26.961
_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
  Fe  Fe0  1  0.000  0.000  0.000  1.0
  Rh  Rh1  1  0.500  0.500  0.500  1.0
[/CIF]
.