data_[Np4Cu2Pb2O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Np  1.3600  1.7500  1.0000
  Cu  1.9000  1.3500  0.8200
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [7.5633]
_cell_length_b [6.8667]
_cell_length_c [6.9745]
_cell_angle_alpha [90.0000]
_cell_angle_beta [91.9696]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Np2CuPbO8]
_chemical_formula_sum '[Np4 Cu2 Pb2 O16]'
_cell_volume [362.0042]
_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
[
  Np  Np0  4  0.0022  0.5000  0.7587  1
  Cu  Cu1  2  0.0000  0.0000  0.0000  1
  Pb  Pb2  2  0.0000  0.0000  0.5000  1
  O  O3  8  0.0011  0.2156  0.2173  1
  O  O4  4  0.1657  0.5000  0.4847  1
  O  O5  4  0.1692  0.5000  0.9928  1
]