data_[K4Na8Sn4Hg2]
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
  Sn  1.9600  1.4500  0.8300
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.0436]
_cell_length_b [7.9568]
_cell_length_c [5.7964]
_cell_angle_alpha [90.0000]
_cell_angle_beta [99.9937]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Na4Sn2Hg]
_chemical_formula_sum '[K4 Na8 Sn4 Hg2]'
_cell_volume [637.8781]
_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  0.1330  0.5000  0.7059  1.0
  Na  Na1  8  0.1387  0.2067  0.2020  1.0
  Sn  Sn2  4  0.1903  0.0000  0.7399  1.0
  Hg  Hg3  2  0.0000  0.0000  0.5000  1.0
]