data_[Tm8Hg4As8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tm  1.2500  1.7500  1.0950
  Hg  2.0000  1.5000  1.2450
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.9711]
_cell_length_b [18.0474]
_cell_length_c [6.5193]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Tm2HgAs2]
_chemical_formula_sum '[Tm8 Hg4 As8]'
_cell_volume [467.2214]
_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
[
  Tm  Tm0  4  0.0000  0.3011  0.0562  1
  Tm  Tm1  4  0.0000  0.4763  0.7386  1
  Hg  Hg2  4  0.0000  0.1016  0.9405  1
  As  As3  4  0.0000  0.0848  0.5154  1
  As  As4  4  0.0000  0.3095  0.6149  1
]