data_[Na4Sm4Mg2Ti6O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sm  1.1700  1.8500  1.2290
  Mg  1.3100  1.5000  0.8600
  Ti  1.5400  1.4000  0.8517
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I-4m2]
_cell_length_a [3.9268]
_cell_length_b [3.9268]
_cell_length_c [27.1269]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [119]
_chemical_formula_structural [Na2Sm2MgTi3O10]
_chemical_formula_sum '[Na4 Sm4 Mg2 Ti6 O20]'
_cell_volume [418.2970]
_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  0.0000  0.3113  1
  Sm  Sm1  4  0.0000  0.0000  0.4278  1
  Mg  Mg2  2  0.0000  0.5000  0.2500  1
  Ti  Ti3  4  0.0000  0.0000  0.1448  1
  Ti  Ti4  2  0.0000  0.0000  0.0000  1
  O  O5  4  0.0000  0.0000  0.0716  1
  O  O6  4  0.0000  0.0000  0.2205  1
  O  O7  4  0.0000  0.5000  0.0007  1
  O  O8  4  0.0000  0.5000  0.1418  1
  O  O9  4  0.0000  0.5000  0.6346  1
]