data_[Na10Eu2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Eu  1.2000  1.8500  1.1985
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [5.6247]
_cell_length_b [17.1112]
_cell_length_c [5.4659]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Na5Eu]
_chemical_formula_sum '[Na10 Eu2]'
_cell_volume [526.0637]
_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
[
  Na  Na0  4  0.0000  0.1719  0.5000  1.0
  Na  Na1  4  0.0000  0.3277  0.0000  1.0
  Na  Na2  2  0.0000  0.5000  0.5000  1.0
  Eu  Eu3  2  0.0000  0.0000  0.0000  1.0
]