data_[Er3Tm18Sn9]
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
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [12.9962]
_cell_length_b [12.9962]
_cell_length_c [6.2282]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [Er(Tm2Sn)3]
_chemical_formula_sum '[Er3 Tm18 Sn9]'
_cell_volume [911.0185]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.7732  1
  Tm  Tm1  9  0.1684  0.0842  0.3224  1
  Tm  Tm2  9  0.1707  0.3413  0.5220  1
  Sn  Sn3  9  0.0950  0.5475  0.6775  1
]