data_[Sm4Zn4Hg4]
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
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.8965]
_cell_length_b [4.7059]
_cell_length_c [7.2819]
_cell_angle_alpha [90.0000]
_cell_angle_beta [131.5607]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [SmZnHg]
_chemical_formula_sum '[Sm4 Zn4 Hg4]'
_cell_volume [279.3969]
_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  4  0.0173  0.5000  0.2700  1.0
  Zn  Zn1  4  0.1556  0.0000  0.1275  1.0
  Hg  Hg2  4  0.1776  0.0000  0.7076  1.0
]