data_[Er1Tm1Ru2Pb2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
  Ru  2.2000  1.3000  0.6610
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [P4mm]
_cell_length_a [4.5645]
_cell_length_b [4.5645]
_cell_length_c [6.7093]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [99]
_chemical_formula_structural [ErTm(RuPb)2]
_chemical_formula_sum '[Er1 Tm1 Ru2 Pb2]'
_cell_volume [139.7895]
_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
[
  Er  Er0  1  0.0000  0.0000  0.2648  1
  Tm  Tm1  1  0.5000  0.5000  0.7369  1
  Ru  Ru2  2  0.0000  0.5000  0.9994  1
  Pb  Pb3  1  0.0000  0.0000  0.7485  1
  Pb  Pb4  1  0.5000  0.5000  0.2509  1
]