data_[Cr4O10]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cr  1.6600  1.4000  0.9400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pbam]
_cell_length_a [5.7883]
_cell_length_b [9.6022]
_cell_length_c [3.3919]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [55]
_chemical_formula_structural [Cr2O5]
_chemical_formula_sum '[Cr4 O10]'
_cell_volume [188.5235]
_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
[
  Cr  Cr0  4  0.2095  0.3649  0.5000  1
  O  O1  4  0.0550  0.2189  0.5000  1
  O  O2  4  0.2029  0.8996  0.0000  1
  O  O3  2  0.0000  0.5000  0.5000  1
]