data_Re2NiRu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.72
_cell_length_b   2.72
_cell_length_c   7.49
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Re2NiRu
_chemical_formula_sum   'Re2 Ni1 Ru1'
_cell_volume   55.33
_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
  Re  Re1  1  0.36  0.36  0.36  1.0
  Re  Re2  1  0.0  0.0  0.96  1.0
  Ni  Ni0  1  0.0  0.0  0.65  1.0
  Ru  Ru3  1  0.36  0.36  0.76  1.0

data_Re2NiRu
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.84
_cell_length_b   3.84
_cell_length_c   7.49
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Re2NiRu
_chemical_formula_sum   'Re4 Ni2 Ru2'
_cell_volume   110.67
_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
  Re  Re0  2  0.0  0.0  0.96  1.0
  Re  Re1  2  0.36  0.0  0.36  1.0
  Ni  Ni2  2  0.0  0.0  0.65  1.0
  Ru  Ru3  2  0.36  0.0  0.76  1.0

Re Re Ni Ru
Re Re Ni Ru 0 2 o o o 0 2 o + o 0 2 + o o 0 0 + o o 0 0 o + o 0 3 o o o 1 3 - o o 1 3 o - o 1 3 o o o 1 1 + o o 1 1 o + o 1 2 o o o 2 3 o o o 