data_[Be2Sn2F8]
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
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2/c]
_cell_length_a [5.4110]
_cell_length_b [4.8765]
_cell_length_c [8.9210]
_cell_angle_alpha [90.0000]
_cell_angle_beta [127.4441]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [13]
_chemical_formula_structural [BeSnF4]
_chemical_formula_sum '[Be2 Sn2 F8]'
_cell_volume [186.8909]
_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  2  0.5000  0.3797  0.2500  1
  Sn  Sn1  2  0.0000  0.1029  0.7500  1
  F  F2  4  0.2479  0.4361  0.7348  1
  F  F3  4  0.3444  0.1873  0.0742  1
]