data_[K8Tl4Sn2As4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Tl  1.6200  1.9000  1.3325
  Sn  1.9600  1.4500  0.8300
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.9976]
_cell_length_b [7.4249]
_cell_length_c [8.0756]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.2419]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K4Tl2SnAs2]
_chemical_formula_sum '[K8 Tl4 Sn2 As4]'
_cell_volume [670.5029]
_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  8  0.1644  0.2533  0.2003  1
  Tl  Tl1  4  0.0639  0.5000  0.7018  1
  Sn  Sn2  2  0.0000  0.0000  0.5000  1
  As  As3  4  0.0975  0.0000  0.8297  1
]