data_[K4Rb1Na2Hg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [7.1629]
_cell_length_b [8.3092]
_cell_length_c [8.4924]
_cell_angle_alpha [106.1207]
_cell_angle_beta [99.2740]
_cell_angle_gamma [100.7129]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [K4Rb(NaHg)2]
_chemical_formula_sum '[K4 Rb1 Na2 Hg2]'
_cell_volume [464.8384]
_cell_formula_units_Z [1]
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  0.2991  0.6280  0.0876  1.0
  K  K1  2  0.4406  0.7638  0.6363  1.0
  Rb  Rb2  1  0.0000  0.0000  0.0000  1.0
  Na  Na3  2  0.1122  0.2251  0.6119  1.0
  Hg  Hg4  2  0.0490  0.4203  0.3313  1.0
]