data_[U2Ni2Pb2Se8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  U  1.3800  1.7500  0.9913
  Ni  1.9100  1.3500  0.7400
  Pb  2.3300  1.8000  1.1225
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.8138]
_cell_length_b [5.8653]
_cell_length_c [8.6616]
_cell_angle_alpha [90.0000]
_cell_angle_beta [106.2509]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [UNiPbSe4]
_chemical_formula_sum '[U2 Ni2 Pb2 Se8]'
_cell_volume [332.3296]
_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
[
  U  U0  2  0.2600  0.2500  0.5549  1
  Ni  Ni1  2  0.2476  0.7500  0.3477  1
  Pb  Pb2  2  0.2764  0.2500  0.0467  1
  Se  Se3  4  0.0177  0.5080  0.7243  1
  Se  Se4  2  0.4272  0.7500  0.1429  1
  Se  Se5  2  0.4344  0.7500  0.6109  1
]