data_Ag2F
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.44
_cell_length_b   5.44
_cell_length_c   3.65
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ag2F
_chemical_formula_sum   'Ag4 F2'
_cell_volume   107.99
_cell_formula_units_Z   2
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
  Ag  Ag0  1  0.63  0.63  0.0  1.0
  Ag  Ag1  1  0.81  0.81  0.0  1.0
  Ag  Ag2  1  0.35  0.09  0.83  1.0
  Ag  Ag3  1  0.09  0.35  0.83  1.0
  F  F4  1  0.0  0.0  0.0  1.0
  F  F5  1  0.72  0.72  0.83  1.0

data_Ag2F
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.69
_cell_length_b   7.69
_cell_length_c   3.65
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Ag2F
_chemical_formula_sum   'Ag8 F4'
_cell_volume   215.98
_cell_formula_units_Z   4
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
  Ag  Ag0  4  0.22  0.13  0.83  1.0
  Ag  Ag1  2  0.13  0.5  -0.0  1.0
  Ag  Ag2  2  0.31  0.5  -0.0  1.0
  F  F3  2  0.0  0.0  0.0  1.0
  F  F4  2  0.22  0.5  0.83  1.0

Ag Ag Ag Ag F F
Ag Ag Ag Ag F F 0 5 o o - 1 5 o o - 1 4 + + o 2 4 o o + 2 3 o o o 3 4 o o + 