data_[Ta4Cu2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ta  1.5000  1.4500  0.8200
  Cu  1.9000  1.3500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [5.7038]
_cell_length_b [7.4879]
_cell_length_c [5.2597]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [Ta2CuO6]
_chemical_formula_sum '[Ta4 Cu2 O12]'
_cell_volume [224.6402]
_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
[
  Ta  Ta0  4  0.0000  0.2476  0.7536  1
  Cu  Cu1  2  0.0000  0.5000  0.3375  1
  O  O2  8  0.2244  0.3125  0.4623  1
  O  O3  2  0.0000  0.0000  0.6478  1
  O  O4  2  0.0000  0.5000  0.8983  1
]