data_[Pm1Np2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Np  1.3600  1.7500  1.0000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-3m1]
_cell_length_a [7.0139]
_cell_length_b [7.0139]
_cell_length_c [4.2328]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [164]
_chemical_formula_structural [PmNp2O8]
_chemical_formula_sum '[Pm1 Np2 O8]'
_cell_volume [180.3341]
_cell_formula_units_Z [1]
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
[
  Pm  Pm0  1  0.0000  0.0000  0.0000  1
  Np  Np1  2  0.3333  0.6667  0.2568  1
  O  O2  6  0.1732  0.3465  0.2549  1
  O  O3  2  0.3333  0.6667  0.7588  1
]