data_[Sr2Be4Si2]
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
  Si  1.9000  1.1000  0.5400
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [5.9127]
_cell_length_b [9.7810]
_cell_length_c [2.7459]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.8940]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [SrBe2Si]
_chemical_formula_sum '[Sr2 Be4 Si2]'
_cell_volume [144.0484]
_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
[
  Sr  Sr0  2  0.0000  0.5000  0.5000  1
  Be  Be1  4  0.2500  0.2500  0.0000  1
  Si  Si2  2  0.0000  0.0000  0.5000  1
]