data_Na2BeSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.78
_cell_length_b   5.78
_cell_length_c   5.78
_cell_angle_alpha   139.7
_cell_angle_beta   136.13
_cell_angle_gamma   61.08
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2BeSn
_chemical_formula_sum   'Na2 Be1 Sn1'
_cell_volume   85.77
_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  0.99  0.0  0.39  1.0
  Na  Na2  1  0.0  0.16  0.6  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0
  Sn  Sn3  1  0.0  0.0  0.98  1.0

data_Na2BeSn
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.98
_cell_length_b   4.32
_cell_length_c   5.78
_cell_angle_alpha   111.93
_cell_angle_beta   110.15
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2BeSn
_chemical_formula_sum   'Na2 Be1 Sn1'
_cell_volume   85.77
_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  0.39  0.39  1.0
  Na  Na1  1  0.84  0.43  0.43  1.0
  Be  Be2  1  0.0  0.0  0.0  1.0
  Sn  Sn3  1  0.0  0.98  0.98  1.0

Na Na Be Sn