data_Be2SiSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.62
_cell_length_b   5.62
_cell_length_c   5.62
_cell_angle_alpha   150.77
_cell_angle_beta   134.4
_cell_angle_gamma   55.08
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2SiSn
_chemical_formula_sum   'Be2 Si1 Sn1'
_cell_volume   61.59
_cell_formula_units_Z   1
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
  Be  Be0  1  0.0  0.0  0.5  1.0
  Be  Be1  1  0.42  0.0  0.58  1.0
  Si  Si2  1  0.0  0.0  0.57  1.0
  Sn  Sn3  1  0.0  0.18  0.32  1.0

data_Be2SiSn
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.84
_cell_length_b   4.36
_cell_length_c   5.62
_cell_angle_alpha   112.8
_cell_angle_beta   104.61
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2SiSn
_chemical_formula_sum   'Be2 Si1 Sn1'
_cell_volume   61.59
_cell_formula_units_Z   1
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
  Be  Be0  1  0.0  0.5  0.5  1.0
  Be  Be1  1  0.0  0.58  0.16  1.0
  Si  Si2  1  0.0  0.57  0.57  1.0
  Sn  Sn3  1  0.82  0.14  0.14  1.0

Be Be Si Sn