data_NaBeSn2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.38
_cell_length_b   3.38
_cell_length_c   8.41
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   105.7
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaBeSn2
_chemical_formula_sum   'Na1 Be1 Sn2'
_cell_volume   92.7
_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
  Na  Na1  1  0.0  0.0  0.21  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0
  Sn  Sn2  1  0.04  0.0  0.8  1.0
  Sn  Sn3  1  0.04  0.0  0.61  1.0

data_NaBeSn2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.38
_cell_length_b   3.38
_cell_length_c   8.41
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   105.7
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaBeSn2
_chemical_formula_sum   'Na1 Be1 Sn2'
_cell_volume   92.7
_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
  Na  Na0  1  0.0  0.0  0.21  1.0
  Be  Be1  1  0.0  0.0  0.0  1.0
  Sn  Sn2  1  0.04  0.0  0.61  1.0
  Sn  Sn3  1  0.04  0.0  0.8  1.0

Na Be Sn Sn
Na Be Sn Sn 0 1 o o o 1 2 o o - 2 3 o o o 