data_[Sr4Cu6Si4]
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 [11.3723]
_cell_length_b [4.0069]
_cell_length_c [7.2142]
_cell_angle_alpha [90.0000]
_cell_angle_beta [122.2428]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sr2Cu3Si2]
_chemical_formula_sum '[Sr4 Cu6 Si4]'
_cell_volume [278.0435]
_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
[
  Sr  Sr0  4  0.1323  0.0000  0.7571  1.0
  Si  Si1  4  0.1365  0.0000  0.2024  1.0
  Cu  Cu2  4  0.1598  0.5000  0.4171  1.0
  Cu  Cu3  2  0.0000  0.5000  0.0000  1.0
]