data_[Ta2Be1Cu1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ta  1.5000  1.4500  0.8200
  Be  1.5700  1.0500  0.5900
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [Pmmm]
_cell_length_a [2.8391]
_cell_length_b [3.6432]
_cell_length_c [5.5766]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [47]
_chemical_formula_structural [Ta2BeCu]
_chemical_formula_sum '[Ta2 Be1 Cu1]'
_cell_volume [57.6815]
_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  2  0.0000  0.0000  0.2432  1
  Be  Be1  1  0.5000  0.5000  0.0000  1
  Cu  Cu2  1  0.5000  0.5000  0.5000  1
]