data_NaCu2Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.07
_cell_length_b   5.07
_cell_length_c   5.07
_cell_angle_alpha   132.04
_cell_angle_beta   132.04
_cell_angle_gamma   70.17
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaCu2Sn
_chemical_formula_sum   'Na1 Cu2 Sn1'
_cell_volume   70.32
_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  Na2  1  0.0  0.0  0.0  1.0
  Cu  Cu0  1  0.0  0.0  0.15  1.0
  Cu  Cu1  1  0.0  0.06  0.07  1.0
  Sn  Sn3  1  0.06  0.0  0.07  1.0

data_NaCu2Sn
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.12
_cell_length_b   4.12
_cell_length_c   5.07
_cell_angle_alpha   113.98
_cell_angle_beta   113.98
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaCu2Sn
_chemical_formula_sum   'Na1 Cu2 Sn1'
_cell_volume   70.32
_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  0.0  1.0
  Cu  Cu1  1  0.01  0.07  0.01  1.0
  Cu  Cu2  1  0.15  0.15  0.15  1.0
  Sn  Sn3  1  0.07  0.01  0.01  1.0

Na Cu Cu Sn