data_[K8Na8Sm16Ta8O52]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Na  0.9300  1.8000  1.1600
  Sm  1.1700  1.8500  1.2290
  Ta  1.5000  1.4500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [24.5157]
_cell_length_b [5.7037]
_cell_length_c [11.3285]
_cell_angle_alpha [90.0000]
_cell_angle_beta [116.2407]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [K2Na2Sm4Ta2O13]
_chemical_formula_sum '[K8 Na8 Sm16 Ta8 O52]'
_cell_volume [1420.8176]
_cell_formula_units_Z [4]
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
[
  K  K0  8  0.2490  0.4491  0.1315  1
  Na  Na1  8  0.1596  0.0371  0.5242  1
  Sm  Sm2  8  0.0626  0.0374  0.6730  1
  Sm  Sm3  8  0.0632  0.4531  0.9496  1
  Ta  Ta4  8  0.1503  0.4668  0.2814  1
  O  O5  8  0.0010  0.2483  0.4770  1
  O  O6  8  0.1014  0.2692  0.3408  1
  O  O7  8  0.1291  0.3077  0.6376  1
  O  O8  8  0.1312  0.2281  0.1393  1
  O  O9  8  0.1344  0.2744  0.8766  1
  O  O10  8  0.2344  0.4374  0.3738  1
  O  O11  4  0.0000  0.2417  0.7500  1
]