data_[Tm2Pb2Se4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tm  1.2500  1.7500  1.0950
  Pb  2.3300  1.8000  1.1225
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [8.8272]
_cell_length_b [6.0319]
_cell_length_c [7.7086]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.1914]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [TmPb(SeO4)2]
_chemical_formula_sum '[Tm2 Pb2 Se4 O16]'
_cell_volume [410.4357]
_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  0.0000  1
  Pb  Pb1  2  0.0000  0.0000  0.5000  1
  Se  Se2  4  0.1318  0.5000  0.7700  1
  O  O3  8  0.0327  0.2427  0.7806  1
  O  O4  4  0.2175  0.5000  0.5763  1
  O  O5  4  0.2429  0.0000  0.0631  1
]