data_[K4Tl2P2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Tl  1.6200  1.9000  1.3325
  P  2.1900  1.0000  0.5500
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pmmn]
_cell_length_a [5.7735]
_cell_length_b [8.3284]
_cell_length_c [6.0239]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [K2TlPO4]
_chemical_formula_sum '[K4 Tl2 P2 O8]'
_cell_volume [289.6536]
_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
[
  K  K0  4  0.0000  0.2400  0.2630  1
  Tl  Tl1  2  0.0000  0.0000  0.7807  1
  P  P2  2  0.0000  0.5000  0.6877  1
  O  O3  4  0.0000  0.3451  0.8322  1
  O  O4  4  0.2224  0.5000  0.5357  1
]