data_[Ho3Er3Si3Se3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ho  1.2300  1.7500  1.0410
  Er  1.2400  1.7500  1.0300
  Si  1.9000  1.1000  0.5400
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [4.0709]
_cell_length_b [4.0709]
_cell_length_c [20.2468]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [HoErSiSe]
_chemical_formula_sum '[Ho3 Er3 Si3 Se3]'
_cell_volume [290.5776]
_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
[
  Ho  Ho0  3  0.0000  0.0000  0.4489  1.0
  Er  Er1  3  0.0000  0.0000  0.9394  1.0
  Si  Si2  3  0.0000  0.0000  0.1945  1.0
  Se  Se3  3  0.0000  0.0000  0.6937  1.0
]