data_[Mg2Ta1Be1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Ta  1.5000  1.4500  0.8200
  Be  1.5700  1.0500  0.5900
]
_symmetry_space_group_name_H-M [Pmm2]
_cell_length_a [2.9152]
_cell_length_b [3.8183]
_cell_length_c [6.2363]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [25]
_chemical_formula_structural [Mg2TaBe]
_chemical_formula_sum '[Mg2 Ta1 Be1]'
_cell_volume [69.4159]
_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
[
  Mg  Mg0  1  0.0000  0.0000  0.9847  1
  Mg  Mg1  1  0.5000  0.5000  0.2708  1
  Ta  Ta2  1  0.0000  0.0000  0.5326  1
  Be  Be3  1  0.5000  0.5000  0.7118  1
]