data_NaFe2Ru
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.58
_cell_length_b   3.66
_cell_length_c   6.51
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaFe2Ru
_chemical_formula_sum   'Na1 Fe2 Ru1'
_cell_volume   61.49
_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
  Na  Na2  1  0.0  0.0  0.0  1.0
  Fe  Fe0  1  0.29  0.83  0.38  1.0
  Fe  Fe1  1  0.29  0.83  0.13  1.0
  Ru  Ru3  1  0.0  0.0  0.25  1.0

data_NaFe2Ru
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.58
_cell_length_b   3.66
_cell_length_c   6.51
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaFe2Ru
_chemical_formula_sum   'Na1 Fe2 Ru1'
_cell_volume   61.49
_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
  Na  Na0  1  0.0  0.0  0.0  1.0
  Fe  Fe1  1  0.29  0.83  0.13  1.0
  Fe  Fe2  1  0.29  0.83  0.38  1.0
  Ru  Ru3  1  0.0  0.0  0.25  1.0

Na Fe Fe Ru
Na Fe Fe Ru 0 2 o - o 1 3 o + o 2 3 o + o 