data_NaCrAg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.74
_cell_length_b   2.74
_cell_length_c   10.19
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   113.19
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaCrAg2
_chemical_formula_sum   'Na1 Cr1 Ag2'
_cell_volume   70.18
_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  Na3  1  0.0  0.0  0.59  1.0
  Cr  Cr2  1  0.51  0.0  0.26  1.0
  Ag  Ag0  1  0.51  0.0  0.08  1.0
  Ag  Ag1  1  0.0  0.0  0.55  1.0

data_NaCrAg2
_symmetry_space_group_name_H-M   P2
_cell_length_a   2.74
_cell_length_b   10.19
_cell_length_c   2.74
_cell_angle_alpha   90.0
_cell_angle_beta   113.19
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   3
_chemical_formula_structural   NaCrAg2
_chemical_formula_sum   'Na1 Cr1 Ag2'
_cell_volume   70.18
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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  0.41  0.0  1.0
  Cr  Cr1  1  0.5  0.74  0.0  1.0
  Ag  Ag2  1  0.0  0.45  0.0  1.0
  Ag  Ag3  1  0.5  0.92  0.0  1.0

Na Cr Ag Ag
Na Cr Ag Ag 0 3 o o o 1 2 o o o 