data_[Tm2Ta2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tm  1.2500  1.7500  1.0950
  Ta  1.5000  1.4500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2/c]
_cell_length_a [5.1030]
_cell_length_b [5.4838]
_cell_length_c [5.2860]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.1802]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [13]
_chemical_formula_structural [TmTaO4]
_chemical_formula_sum '[Tm2 Ta2 O8]'
_cell_volume [147.0613]
_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
[
  Tm  Tm0  2  0.0000  0.2307  0.7500  1.0
  Ta  Ta1  2  0.5000  0.3046  0.2500  1.0
  O  O2  4  0.2470  0.0842  0.0961  1.0
  O  O3  4  0.2671  0.4329  0.4994  1.0
]