data_[K1La2Np1O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  La  1.1000  1.9500  1.1720
  Np  1.3600  1.7500  1.0000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [4.1694]
_cell_length_b [8.4309]
_cell_length_c [5.4735]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.6566]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [KLa2NpO8]
_chemical_formula_sum '[K1 La2 Np1 O8]'
_cell_volume [191.1032]
_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
[
  K  K0  1  0.0000  0.5000  0.0000  1
  La  La1  2  0.5000  0.2224  0.5000  1
  Np  Np2  1  0.0000  0.0000  0.0000  1
  O  O3  4  0.0426  0.1878  0.7670  1
  O  O4  2  0.4407  0.0000  0.2230  1
  O  O5  2  0.4619  0.5000  0.6318  1
]