data_Al2FeRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.93
_cell_length_b   2.93
_cell_length_c   5.87
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Al2FeRh
_chemical_formula_sum   'Al2 Fe1 Rh1'
_cell_volume   50.59
_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
  Al  Al0  1  0.47  0.47  0.5  1.0
  Al  Al1  1  0.47  0.47  0.37  1.0
  Fe  Fe2  1  0.0  0.0  0.0  1.0
  Rh  Rh3  1  0.0  0.0  0.94  1.0

data_Al2FeRh
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.15
_cell_length_b   4.15
_cell_length_c   5.87
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Al2FeRh
_chemical_formula_sum   'Al4 Fe2 Rh2'
_cell_volume   101.17
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Al  Al0  2  0.47  0.0  0.37  1.0
  Al  Al1  2  0.47  0.0  0.5  1.0
  Fe  Fe2  2  0.0  0.0  0.0  1.0
  Rh  Rh3  2  0.0  0.0  0.94  1.0

Al Al Fe Rh
Al Al Fe Rh 0 1 o o o 2 3 o o - 
FeRh(Al)2 is beta oxygen-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two 12062-95-2 molecules and two dialuminium molecules.