data_[Sr8Be4Sn4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Be  1.5700  1.0500  0.5900
  Sn  1.9600  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.2814]
_cell_length_b [13.8997]
_cell_length_c [10.7523]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Sr2BeSnO5]
_chemical_formula_sum '[Sr8 Be4 Sn4 O20]'
_cell_volume [490.4137]
_cell_formula_units_Z [4]
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
[
  Sr  Sr0  4  0.0000  0.0975  0.6727  1.0
  Sr  Sr1  4  0.0000  0.1287  0.3344  1.0
  Be  Be2  4  0.0000  0.4422  0.4184  1.0
  Sn  Sn3  4  0.0000  0.1958  0.0310  1.0
  O  O4  4  0.0000  0.0471  0.0002  1.0
  O  O5  4  0.0000  0.2974  0.6614  1.0
  O  O6  4  0.0000  0.3214  0.3999  1.0
  O  O7  4  0.0000  0.3408  0.0114  1.0
  O  O8  4  0.0000  0.4988  0.2946  1.0
]