data_[K4Sr2Mg2Bi4]
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
  Mg  1.3100  1.5000  0.8600
  Bi  2.0200  1.6000  1.0350
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [5.1576]
_cell_length_b [10.1507]
_cell_length_c [8.4583]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [K2SrMgBi2]
_chemical_formula_sum '[K4 Sr2 Mg2 Bi4]'
_cell_volume [442.8254]
_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  2  0.0000  0.1618  0.6600  1.0
  K  K1  2  0.5000  0.0834  0.9783  1.0
  Sr  Sr2  2  0.0000  0.4545  0.0031  1.0
  Mg  Mg3  2  0.5000  0.3265  0.3454  1.0
  Bi  Bi4  2  0.0000  0.1878  0.2531  1.0
  Bi  Bi5  2  0.5000  0.3911  0.7147  1.0
]