data_[U2Be2Si2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  U  1.3800  1.7500  0.9913
  Be  1.5700  1.0500  0.5900
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [3.7462]
_cell_length_b [3.7022]
_cell_length_c [6.5864]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.0001]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [UBeSi]
_chemical_formula_sum '[U2 Be2 Si2]'
_cell_volume [90.8490]
_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
[
  U  U0  2  0.1526  0.7500  0.1136  1
  Be  Be1  2  0.2114  0.2500  0.4992  1
  Si  Si2  2  0.3212  0.7500  0.7031  1
]