data_[Sr2Ca2Cl8]
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
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [7.0147]
_cell_length_b [7.0305]
_cell_length_c [7.0149]
_cell_angle_alpha [90.0000]
_cell_angle_beta [92.0138]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [SrCaCl4]
_chemical_formula_sum '[Sr2 Ca2 Cl8]'
_cell_volume [345.7364]
_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  2  0.0000  0.0000  0.0000  1.0
  Ca  Ca1  2  0.5000  0.0000  0.5000  1.0
  Cl  Cl2  4  0.1673  0.6543  0.8554  1.0
  Cl  Cl3  4  0.3438  0.1697  0.8216  1.0
]