data_[Mg2Be4Os4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Be  1.5700  1.0500  0.5900
  Os  2.2000  1.3000  0.6730
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [6.0455]
_cell_length_b [6.0455]
_cell_length_c [3.1768]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [Mg(BeOs)2]
_chemical_formula_sum '[Mg2 Be4 Os4]'
_cell_volume [116.1058]
_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
[
  Mg  Mg0  2  0.0000  0.0000  0.0000  1.0
  Be  Be1  4  0.1200  0.6200  0.0000  1.0
  Os  Os2  4  0.1716  0.3284  0.5000  1.0
]