data_[Na4Ag2H8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ag  1.9300  1.6000  1.0867
  H  2.2000  0.2500  0.0000
]
_symmetry_space_group_name_H-M [Pmmn]
_cell_length_a [4.8988]
_cell_length_b [8.3297]
_cell_length_c [5.1501]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [Na2AgH4]
_chemical_formula_sum '[Na4 Ag2 H8]'
_cell_volume [210.1493]
_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  4  0.0000  0.2712  0.2443  1.0
  Ag  Ag1  2  0.0000  0.5000  0.7368  1.0
  H  H2  4  0.0000  0.2953  0.7496  1.0
  H  H3  4  0.0821  0.0000  0.5218  1.0
]