data_[Sm16Zn4Hg4O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Zn  1.6500  1.3500  0.8800
  Hg  2.0000  1.5000  1.2450
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [6.8583]
_cell_length_b [15.0322]
_cell_length_c [6.8744]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Sm4ZnHgO]
_chemical_formula_sum '[Sm16 Zn4 Hg4 O4]'
_cell_volume [708.7222]
_cell_formula_units_Z [4]
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
[
  Sm  Sm0  8  0.2500  0.2500  0.0000  1
  Sm  Sm1  4  0.0000  0.0746  0.2500  1
  Sm  Sm2  4  0.0000  0.4335  0.2500  1
  Zn  Zn3  4  0.0000  0.3731  0.7500  1
  Hg  Hg4  4  0.0000  0.1201  0.7500  1
  O  O5  4  0.0000  0.2498  0.2500  1
]