data_[Tm2Ni2I2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tm  1.2500  1.7500  1.0950
  Ni  1.9100  1.3500  0.7400
  I  2.6600  1.4000  1.2733
]
_symmetry_space_group_name_H-M [P-3m1]
_cell_length_a [4.0286]
_cell_length_b [4.0286]
_cell_length_c [11.9378]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [164]
_chemical_formula_structural [TmNiI]
_chemical_formula_sum '[Tm2 Ni2 I2]'
_cell_volume [167.7872]
_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
[
  Tm  Tm0  2  0.0000  0.0000  0.1471  1.0
  Ni  Ni1  2  0.3333  0.6667  0.0075  1.0
  I  I2  2  0.3333  0.6667  0.6751  1.0
]