data_[Ta1Cu2As2]
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
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Pmm2]
_cell_length_a [4.1644]
_cell_length_b [19.8989]
_cell_length_c [2.7963]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [25]
_chemical_formula_structural [Ta(CuAs)2]
_chemical_formula_sum '[Ta1 Cu2 As2]'
_cell_volume [231.7259]
_cell_formula_units_Z [1]
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  1  0.5000  0.5000  0.4320  1
  Cu  Cu1  2  0.0000  0.4384  0.9233  1
  As  As2  2  0.5000  0.3769  0.0397  1
]