data_[Tm8Be4Si8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tm  1.2500  1.7500  1.0950
  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 [10.3499]
_cell_length_b [3.9146]
_cell_length_c [10.0907]
_cell_angle_alpha [90.0000]
_cell_angle_beta [115.6609]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Tm2BeSi2]
_chemical_formula_sum '[Tm8 Be4 Si8]'
_cell_volume [368.5063]
_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
[
  Tm  Tm0  4  0.1049  0.0000  0.9029  1.0
  Tm  Tm1  4  0.2060  0.5000  0.6468  1.0
  Be  Be2  4  0.0615  0.5000  0.3122  1.0
  Si  Si3  4  0.0381  0.0000  0.4066  1.0
  Si  Si4  4  0.1192  0.5000  0.1202  1.0
]