data_[K4Tm2Sn2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Tm  1.2500  1.7500  1.0950
  Sn  1.9600  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2]
_cell_length_a [8.0412]
_cell_length_b [7.8769]
_cell_length_c [6.1182]
_cell_angle_alpha [90.0000]
_cell_angle_beta [129.2122]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [5]
_chemical_formula_structural [K2TmSnO4]
_chemical_formula_sum '[K4 Tm2 Sn2 O8]'
_cell_volume [300.2584]
_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  2  0.0000  0.0181  0.5000  1
  K  K1  2  0.0000  0.2690  0.0000  1
  Tm  Tm2  2  0.0000  0.4919  0.5000  1
  Sn  Sn3  2  0.0000  0.7624  0.0000  1
  O  O4  4  0.1482  0.6019  0.9065  1
  O  O5  4  0.2305  0.3210  0.5642  1
]