data_[Ac4Er4Sb4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Er  1.2400  1.7500  1.0300
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [7.8141]
_cell_length_b [9.7072]
_cell_length_c [8.3087]
_cell_angle_alpha [90.0000]
_cell_angle_beta [117.8732]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [AcErSbO5]
_chemical_formula_sum '[Ac4 Er4 Sb4 O20]'
_cell_volume [557.1198]
_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
[
  Ac  Ac0  4  0.0000  0.3149  0.2500  1
  Er  Er1  4  0.0000  0.0000  0.0000  1
  Sb  Sb2  4  0.0000  0.3060  0.7500  1
  O  O3  8  0.1115  0.2242  0.5860  1
  O  O4  8  0.1852  0.4451  0.9031  1
  O  O5  4  0.0000  0.0735  0.2500  1
]