data_[Sr8Ca20]
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 [17.8795]
_cell_length_b [6.9247]
_cell_length_c [10.3943]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.1232]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [Sr2Ca5]
_chemical_formula_sum '[Sr8 Ca20]'
_cell_volume [1285.0170]
_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  0.0737  0.3299  0.1058  1.0
  Ca  Ca1  8  0.1474  0.1657  0.4645  1.0
  Ca  Ca2  8  0.2138  0.3283  0.8193  1.0
  Ca  Ca3  4  0.0000  0.1648  0.7500  1.0
]