data_[Be4Sn2C4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Be  1.5700  1.0500  0.5900
  Sn  1.9600  1.4500  0.8300
  C  2.5500  0.7000  0.3000
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [6.6371]
_cell_length_b [6.6371]
_cell_length_c [2.9556]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [Be2SnC2]
_chemical_formula_sum '[Be4 Sn2 C4]'
_cell_volume [130.1951]
_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
[
  Be  Be0  4  0.1152  0.3848  0.0000  1
  Sn  Sn1  2  0.0000  0.0000  0.0000  1
  C  C2  4  0.0721  0.5721  0.5000  1
]