data_[Na2Tm2Np2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Tm  1.2500  1.7500  1.0950
  Np  1.3600  1.7500  1.0000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P4_2nm]
_cell_length_a [5.1326]
_cell_length_b [5.1326]
_cell_length_c [10.1387]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [102]
_chemical_formula_structural [NaTmNpO6]
_chemical_formula_sum '[Na2 Tm2 Np2 O12]'
_cell_volume [267.0910]
_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
[
  Na  Na0  2  0.0000  0.0000  0.9988  1
  Tm  Tm1  2  0.0000  0.0000  0.6685  1
  Np  Np2  2  0.0000  0.0000  0.3335  1
  O  O3  4  0.1758  0.8242  0.4848  1
  O  O4  4  0.1956  0.8044  0.1938  1
  O  O5  4  0.2207  0.7793  0.8209  1
]