data_[Ac1Lu2Ru1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Lu  1.2700  1.7500  1.0010
  Ru  2.2000  1.3000  0.6610
]
_symmetry_space_group_name_H-M [P4/mmm]
_cell_length_a [3.4648]
_cell_length_b [3.4648]
_cell_length_c [9.1085]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [123]
_chemical_formula_structural [AcLu2Ru]
_chemical_formula_sum '[Ac1 Lu2 Ru1]'
_cell_volume [109.3439]
_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
[
  Ac  Ac0  1  0.5000  0.5000  0.5000  1
  Lu  Lu1  2  0.0000  0.0000  0.1722  1
  Ru  Ru2  1  0.5000  0.5000  0.0000  1
]