data_[K2Np1Ag1S4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Np  1.3600  1.7500  1.0000
  Ag  1.9300  1.6000  1.0867
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [6.7445]
_cell_length_b [4.0843]
_cell_length_c [7.6954]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.3116]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [K2NpAgS4]
_chemical_formula_sum '[K2 Np1 Ag1 S4]'
_cell_volume [201.2447]
_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  0.0000  0.0000  1
  K  K1  1  0.5000  0.5000  0.0000  1
  Np  Np2  1  0.5000  0.0000  0.5000  1
  Ag  Ag3  1  0.0000  0.5000  0.5000  1
  S  S4  2  0.2546  0.0000  0.6960  1
  S  S5  2  0.2834  0.5000  0.2977  1
]