data_NaAgCl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.55
_cell_length_b   6.55
_cell_length_c   6.55
_cell_angle_alpha   150.23
_cell_angle_beta   150.23
_cell_angle_gamma   42.61
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaAgCl
_chemical_formula_sum   'Na1 Ag1 Cl1'
_cell_volume   69.06
_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  0.54  1.0
  Ag  Ag0  1  0.0  0.0  0.09  1.0
  Cl  Cl1  1  0.0  0.0  0.77  1.0

data_NaAgCl
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.76
_cell_length_b   4.76
_cell_length_c   6.55
_cell_angle_alpha   90.0
_cell_angle_beta   111.3
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NaAgCl
_chemical_formula_sum   'Na2 Ag2 Cl2'
_cell_volume   138.12
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  2  0.04  0.5  0.54  1.0
  Ag  Ag1  2  0.09  0.0  0.09  1.0
  Cl  Cl2  2  0.27  0.5  0.77  1.0

Na Ag Cl