data_[Tm2Ta2Ti4O16]
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
  Ti  1.5400  1.4000  0.8517
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.8709]
_cell_length_b [6.6215]
_cell_length_c [6.3610]
_cell_angle_alpha [90.0000]
_cell_angle_beta [91.3947]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [TmTaTi2O8]
_chemical_formula_sum '[Tm2 Ta2 Ti4 O16]'
_cell_volume [289.3081]
_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  0.0000  0.5000  1.0
  Ta  Ta1  2  0.0000  0.0000  0.0000  1.0
  Ti  Ti2  4  0.0318  0.5000  0.7468  1.0
  O  O3  8  0.0006  0.2056  0.7728  1.0
  O  O4  4  0.1795  0.5000  0.5108  1.0
  O  O5  4  0.2026  0.5000  0.9865  1.0
]