data_[Li8Cr4P8O28]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Cr  1.6600  1.4000  0.9400
  P  2.1900  1.0000  0.5500
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [12.8430]
_cell_length_b [7.9361]
_cell_length_c [5.6112]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Li2CrP2O7]
_chemical_formula_sum '[Li8 Cr4 P8 O28]'
_cell_volume [571.9067]
_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
[
  Li  Li0  8  0.2135  0.5000  0.0000  1
  Cr  Cr1  4  0.0000  0.3008  0.7500  1
  P  P2  8  0.1113  0.1978  0.2500  1
  O  O3  16  0.1106  0.3093  0.0245  1
  O  O4  8  0.1945  0.0645  0.2500  1
  O  O5  4  0.0000  0.0961  0.2500  1
]