data_LiY2Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.18
_cell_length_b   5.18
_cell_length_c   3.68
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LiY2Ag
_chemical_formula_sum   'Li1 Y2 Ag1'
_cell_volume   98.71
_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
  Li  Li1  1  0.0  0.0  0.0  1.0
  Y  Y2  1  0.0  0.59  0.84  1.0
  Y  Y3  1  0.59  0.0  0.84  1.0
  Ag  Ag0  1  0.59  0.59  0.0  1.0

data_LiY2Ag
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.32
_cell_length_b   7.32
_cell_length_c   3.68
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   LiY2Ag
_chemical_formula_sum   'Li2 Y4 Ag2'
_cell_volume   197.43
_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
  Li  Li0  2  0.0  0.0  0.0  1.0
  Y  Y1  4  0.29  0.29  0.84  1.0
  Ag  Ag2  2  0.09  0.5  0.0  1.0

Li Y Y Ag
Li Y Y Ag 0 2 - o - 0 1 o - - 1 3 - o + 2 3 o - + 