data_RuRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.23
_cell_length_b   5.23
_cell_length_c   4.19
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   150.23
_symmetry_Int_Tables_number   1
_chemical_formula_structural   RuRh
_chemical_formula_sum   'Ru2 Rh2'
_cell_volume   56.91
_cell_formula_units_Z   2
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
  Ru  Ru2  1  0.34  0.7  0.15  1.0
  Ru  Ru3  1  0.34  0.3  0.05  1.0
  Rh  Rh0  1  0.34  0.27  0.15  1.0
  Rh  Rh1  1  0.34  0.73  0.05  1.0

data_RuRh
_symmetry_space_group_name_H-M   P-1
_cell_length_a   2.69
_cell_length_b   4.19
_cell_length_c   5.23
_cell_angle_alpha   90.0
_cell_angle_beta   104.88
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   RuRh
_chemical_formula_sum   'Ru2 Rh2'
_cell_volume   56.91
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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
  Ru  Ru0  2  0.3  0.55  0.8  1.0
  Rh  Rh1  2  0.27  0.45  0.77  1.0

Ru Ru Rh Rh
Ru Ru Rh Rh 0 3 o o o 1 2 o o o 