data_[Rb4Zr4Sb4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Zr  1.3300  1.5500  0.8600
  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 [7.5957]
_cell_length_b [10.0380]
_cell_length_c [7.9474]
_cell_angle_alpha [90.0000]
_cell_angle_beta [115.2042]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [RbZrSbO5]
_chemical_formula_sum '[Rb4 Zr4 Sb4 O20]'
_cell_volume [548.2616]
_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
[
  Rb  Rb0  4  0.0000  0.3266  0.2500  1
  Zr  Zr1  4  0.0000  0.0000  0.0000  1
  Sb  Sb2  4  0.0000  0.3090  0.7500  1
  O  O3  8  0.0888  0.2021  0.6029  1
  O  O4  8  0.2018  0.4242  0.9097  1
  O  O5  4  0.0000  0.0496  0.2500  1
]