data_[Mg4Np4Pt4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Np  1.3600  1.7500  1.0000
  Pt  2.2800  1.3500  0.8050
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [2.7644]
_cell_length_b [4.9529]
_cell_length_c [16.4616]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [MgNpPt]
_chemical_formula_sum '[Mg4 Np4 Pt4]'
_cell_volume [225.3889]
_cell_formula_units_Z [4]
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
[
  Mg  Mg0  4  0.0000  0.5000  0.1773  1
  Np  Np1  4  0.0000  0.2402  0.5000  1
  Pt  Pt2  4  0.0000  0.5000  0.3416  1
]