data_NaSi2Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.83
_cell_length_b   5.83
_cell_length_c   5.83
_cell_angle_alpha   142.36
_cell_angle_beta   135.8
_cell_angle_gamma   59.42
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaSi2Ag
_chemical_formula_sum   'Na1 Si2 Ag1'
_cell_volume   83.39
_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  0.93  1.0
  Si  Si2  1  0.88  0.0  0.24  1.0
  Si  Si3  1  0.0  0.0  0.7  1.0
  Ag  Ag0  1  0.0  0.19  0.25  1.0

data_NaSi2Ag
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.76
_cell_length_b   4.38
_cell_length_c   5.83
_cell_angle_alpha   112.1
_cell_angle_beta   108.82
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaSi2Ag
_chemical_formula_sum   'Na1 Si2 Ag1'
_cell_volume   83.39
_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  0.07  0.07  0.07  1.0
  Si  Si1  1  0.3  0.3  0.3  1.0
  Si  Si2  1  0.64  0.76  0.64  1.0
  Ag  Ag3  1  0.75  0.94  0.94  1.0

Na Si Si Ag