data_[Pr2Tl2Si2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Tl  1.6200  1.9000  1.3325
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.0448]
_cell_length_b [5.6347]
_cell_length_c [7.9010]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.4072]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [PrTlSiO4]
_chemical_formula_sum '[Pr2 Tl2 Si2 O8]'
_cell_volume [260.6499]
_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
[
  Pr  Pr0  2  0.2281  0.7500  0.5723  1.0
  Tl  Tl1  2  0.2985  0.7500  0.1162  1.0
  Si  Si2  2  0.2534  0.2500  0.3547  1.0
  O  O3  4  0.0784  0.0198  0.3366  1.0
  O  O4  2  0.4156  0.2500  0.2170  1.0
  O  O5  2  0.4249  0.2500  0.5546  1.0
]