data_[Mg2Be6B6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Be  1.5700  1.0500  0.5900
  B  2.0400  0.8500  0.4100
]
_symmetry_space_group_name_H-M [Pm-3n]
_cell_length_a [5.3458]
_cell_length_b [5.3458]
_cell_length_c [5.3458]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [223]
_chemical_formula_structural [Mg(BeB)3]
_chemical_formula_sum '[Mg2 Be6 B6]'
_cell_volume [152.7673]
_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
[
  Mg  Mg0  2  0.0000  0.0000  0.0000  1
  Be  Be1  6  0.0000  0.2500  0.5000  1
  B  B2  6  0.0000  0.5000  0.2500  1
]