data_[Sm4Cu2Ge8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Cu  1.9000  1.3500  0.8200
  Ge  2.0100  1.2500  0.7700
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [4.0710]
_cell_length_b [4.1522]
_cell_length_c [17.1509]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Sm2CuGe4]
_chemical_formula_sum '[Sm4 Cu2 Ge8]'
_cell_volume [289.9154]
_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  0.0000  0.1034  1
  Sm  Sm1  2  0.5000  0.0000  0.8948  1
  Cu  Cu2  2  0.5000  0.0000  0.6781  1
  Ge  Ge3  2  0.0000  0.0000  0.4496  1
  Ge  Ge4  2  0.0000  0.0000  0.7581  1
  Ge  Ge5  2  0.5000  0.0000  0.2588  1
  Ge  Ge6  2  0.5000  0.0000  0.5391  1
]