data_[Be2Cr1Pb1C1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Be  1.5700  1.0500  0.5900
  Cr  1.6600  1.4000  0.9400
  Pb  2.3300  1.8000  1.1225
  C  2.5500  0.7000  0.3000
]
_symmetry_space_group_name_H-M [P4/mmm]
_cell_length_a [4.3251]
_cell_length_b [4.3251]
_cell_length_c [5.1912]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [123]
_chemical_formula_structural [Be2CrPbC]
_chemical_formula_sum '[Be2 Cr1 Pb1 C1]'
_cell_volume [97.1079]
_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
[
  Be  Be0  2  0.0000  0.5000  0.0000  1
  Cr  Cr1  1  0.0000  0.0000  0.0000  1
  Pb  Pb2  1  0.0000  0.0000  0.5000  1
  C  C3  1  0.5000  0.5000  0.5000  1
]