data_[Sr20Ca8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Ca  1.0000  1.8000  1.1400
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [18.5394]
_cell_length_b [7.1733]
_cell_length_c [10.7805]
_cell_angle_alpha [90.0000]
_cell_angle_beta [92.8649]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Sr5Ca2]
_chemical_formula_sum '[Sr20 Ca8]'
_cell_volume [1431.8946]
_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  8  0.1385  0.1705  0.4637  1.0
  Sr  Sr1  8  0.2146  0.3349  0.8231  1.0
  Sr  Sr2  4  0.0000  0.1732  0.7500  1.0
  Ca  Ca3  8  0.0694  0.3328  0.1081  1.0
]