data_[Eu1Gd2Se3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Eu  1.2000  1.8500  1.1985
  Gd  1.2000  1.8000  1.0750
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P-3m1]
_cell_length_a [4.1665]
_cell_length_b [4.1665]
_cell_length_c [10.2073]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [164]
_chemical_formula_structural [EuGd2Se3]
_chemical_formula_sum '[Eu1 Gd2 Se3]'
_cell_volume [153.4560]
_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
[
  Gd  Gd0  2  0.3333  0.6667  0.6553  1
  Eu  Eu1  1  0.0000  0.0000  0.0000  1
  Se  Se2  2  0.3333  0.6667  0.1761  1
  Se  Se3  1  0.0000  0.0000  0.5000  1
]