data_[K4Rb2Mg2Hg4]
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
  Mg  1.3100  1.5000  0.8600
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [5.3310]
_cell_length_b [10.0088]
_cell_length_c [9.2588]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [K2RbMgHg2]
_chemical_formula_sum '[K4 Rb2 Mg2 Hg4]'
_cell_volume [494.0238]
_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  0.3532  1.0
  Rb  Rb1  2  0.0000  0.4411  0.0075  1.0
  K  K2  2  0.5000  0.0943  0.0120  1.0
  Mg  Mg3  2  0.5000  0.3030  0.6508  1.0
  Hg  Hg4  2  0.0000  0.1826  0.7269  1.0
  Hg  Hg5  2  0.5000  0.3984  0.2952  1.0
]