data_[Y2Er6Mg6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Y  1.2200  1.8000  1.0400
  Er  1.2400  1.7500  1.0300
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [P6_3/m]
_cell_length_a [9.0853]
_cell_length_b [9.0853]
_cell_length_c [5.4628]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [176]
_chemical_formula_structural [Y(ErMg)3]
_chemical_formula_sum '[Y2 Er6 Mg6]'
_cell_volume [390.5091]
_cell_formula_units_Z [2]
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
[
  Y  Y0  2  0.3333  0.6667  0.7500  1
  Er  Er1  6  0.0397  0.8003  0.7500  1
  Mg  Mg2  6  0.0933  0.6149  0.2500  1
]