data_[Li4Mg2Bi6Se12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Mg  1.3100  1.5000  0.8600
  Bi  2.0200  1.6000  1.0350
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [17.8962]
_cell_length_b [4.1324]
_cell_length_c [8.2817]
_cell_angle_alpha [90.0000]
_cell_angle_beta [101.3587]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Li2Mg(BiSe2)3]
_chemical_formula_sum '[Li4 Mg2 Bi6 Se12]'
_cell_volume [600.4696]
_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
[
  Li  Li0  4  0.1686  0.0000  0.3329  1.0
  Mg  Mg1  2  0.0000  0.5000  0.0000  1.0
  Bi  Bi2  4  0.1679  0.0000  0.8304  1.0
  Bi  Bi3  2  0.0000  0.5000  0.5000  1.0
  Se  Se4  4  0.0018  0.0000  0.2294  1.0
  Se  Se5  4  0.1621  0.5000  0.0884  1.0
  Se  Se6  4  0.1688  0.5000  0.5757  1.0
]