data_[Sm2Np2H2N4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Np  1.3600  1.7500  1.0000
  H  2.2000  0.2500  0.0000
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [P4/nmm]
_cell_length_a [3.4796]
_cell_length_b [3.4796]
_cell_length_c [10.9201]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [129]
_chemical_formula_structural [SmNpHN2]
_chemical_formula_sum '[Sm2 Np2 H2 N4]'
_cell_volume [132.2194]
_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
[
  Sm  Sm0  2  0.0000  0.5000  0.3578  1
  Np  Np1  2  0.0000  0.5000  0.8897  1
  H  H2  2  0.0000  0.0000  0.5000  1
  N  N3  2  0.0000  0.5000  0.1097  1
  N  N4  2  0.0000  0.5000  0.7038  1
]