data_[K4Sr2Se4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Sr  0.9500  2.0000  1.3200
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [9.6159]
_cell_length_b [6.1329]
_cell_length_c [7.6065]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.0466]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Sr(SeO3)2]
_chemical_formula_sum '[K4 Sr2 Se4 O12]'
_cell_volume [409.6524]
_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
[
  K  K0  4  0.1980  0.5000  0.1489  1.0
  Sr  Sr1  2  0.0000  0.5000  0.5000  1.0
  Se  Se2  4  0.0767  0.0000  0.2348  1.0
  O  O3  8  0.0359  0.2246  0.7704  1.0
  O  O4  4  0.2215  0.0000  0.4585  1.0
]