data_[Sr4Cu12Si8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Cu  1.9000  1.3500  0.8200
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [15.3253]
_cell_length_b [4.0234]
_cell_length_c [7.2696]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.4966]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [SrCu3Si2]
_chemical_formula_sum '[Sr4 Cu12 Si8]'
_cell_volume [411.0806]
_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
[
  Sr  Sr0  4  0.1562  0.0000  0.0742  1.0
  Si  Si1  4  0.0196  0.5000  0.1784  1.0
  Cu  Cu2  4  0.0296  0.0000  0.3597  1.0
  Cu  Cu3  4  0.0893  0.5000  0.6576  1.0
  Si  Si4  4  0.1796  0.0000  0.6443  1.0
  Cu  Cu5  4  0.1828  0.5000  0.4418  1.0
]