data_[Ac4Be2Si4Os4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Be  1.5700  1.0500  0.5900
  Si  1.9000  1.1000  0.5400
  Os  2.2000  1.3000  0.6730
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.6675]
_cell_length_b [4.4231]
_cell_length_c [7.6971]
_cell_angle_alpha [90.0000]
_cell_angle_beta [129.8909]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Ac2Be(SiOs)2]
_chemical_formula_sum '[Ac4 Be2 Si4 Os4]'
_cell_volume [304.7740]
_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
[
  Ac  Ac0  4  0.0606  0.5000  0.8058  1
  Be  Be1  2  0.0000  0.0000  0.0000  1
  Si  Si2  4  0.1955  0.0000  0.6309  1
  Os  Os3  4  0.2152  0.0000  0.3346  1
]