data_[Sr2Ca2Cr8O24]
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
  Cr  1.6600  1.4000  0.9400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [7.5120]
_cell_length_b [7.5696]
_cell_length_c [7.4732]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [SrCaCr4O12]
_chemical_formula_sum '[Sr2 Ca2 Cr8 O24]'
_cell_volume [424.9475]
_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  0.5000  0.0000  0.9883  1
  Ca  Ca1  2  0.0000  0.0000  0.5137  1
  Cr  Cr2  8  0.2480  0.2469  0.2474  1
  O  O3  8  0.2447  0.2282  0.0011  1
  O  O4  4  0.0000  0.2211  0.7420  1
  O  O5  4  0.2159  0.0000  0.2823  1
  O  O6  4  0.2736  0.0000  0.7225  1
  O  O7  4  0.5000  0.2267  0.2545  1
]