data_[Sm8Si4H2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Si  1.9000  1.1000  0.5400
  H  2.2000  0.2500  0.0000
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.3806]
_cell_length_b [6.4818]
_cell_length_c [8.6108]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.4218]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Sm4Si2H]
_chemical_formula_sum '[Sm8 Si4 H2]'
_cell_volume [335.8633]
_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  4  0.4876  0.0001  0.7353  1
  Sm  Sm1  2  0.0685  0.7500  0.3790  1
  Sm  Sm2  2  0.0920  0.7500  0.9100  1
  Si  Si3  2  0.2375  0.2500  0.4283  1
  Si  Si4  2  0.2870  0.2500  0.9526  1
  H  H5  2  0.2487  0.7500  0.1889  1
]