data_[Nb2Tl2Sn2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nb  1.6000  1.4500  0.8200
  Tl  1.6200  1.9000  1.3325
  Sn  1.9600  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.1292]
_cell_length_b [6.0526]
_cell_length_c [8.1377]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.9191]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NbTlSnO4]
_chemical_formula_sum '[Nb2 Tl2 Sn2 O8]'
_cell_volume [330.1354]
_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
[
  Nb  Nb0  2  0.3490  0.7500  0.2381  1
  Tl  Tl1  2  0.2474  0.2500  0.9466  1
  Sn  Sn2  2  0.1133  0.2500  0.3949  1
  O  O3  4  0.2027  0.0078  0.2502  1
  O  O4  2  0.3711  0.7500  0.0204  1
  O  O5  2  0.3898  0.2500  0.6003  1
]