data_[Rb2Ti2Sb2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ti  1.5400  1.4000  0.8517
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.8251]
_cell_length_b [6.0080]
_cell_length_c [7.8348]
_cell_angle_alpha [90.0000]
_cell_angle_beta [112.4947]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbTiSbO4]
_chemical_formula_sum '[Rb2 Ti2 Sb2 O8]'
_cell_volume [296.8247]
_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
[
  Rb  Rb0  2  0.3064  0.7500  0.0445  1
  Ti  Ti1  2  0.1040  0.2500  0.7625  1
  Sb  Sb2  2  0.2668  0.2500  0.3644  1
  O  O3  4  0.0613  0.0062  0.2652  1
  O  O4  2  0.2677  0.2500  0.6188  1
  O  O5  2  0.2859  0.2500  0.9889  1
]