data_SrLi2Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.17
_cell_length_b   5.17
_cell_length_c   5.17
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrLi2Ag
_chemical_formula_sum   'Sr1 Li2 Ag1'
_cell_volume   97.49
_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
  Sr  Sr3  1  0.0  0.0  0.0  1.0
  Li  Li1  1  0.48  0.48  0.48  1.0
  Li  Li2  1  0.83  0.83  0.83  1.0
  Ag  Ag0  1  0.65  0.65  0.65  1.0

data_SrLi2Ag
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.17
_cell_length_b   5.17
_cell_length_c   12.65
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   SrLi2Ag
_chemical_formula_sum   'Sr3 Li6 Ag3'
_cell_volume   292.47
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Sr  Sr0  3  0.0  0.0  0.0  1.0
  Li  Li1  3  0.0  0.0  0.17  1.0
  Li  Li2  3  0.0  0.0  0.52  1.0
  Ag  Ag3  3  0.0  0.0  0.35  1.0

Sr Li Li Ag
Sr Li Li Ag 0 2 - - - 1 3 o o o 2 3 o o o 
Li2SrAg crystallizes in the trigonal R3m space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a single-bond geometry to one Ag(1) atom. The Li(1)-Ag(1) bond length is 2.20 Å. In the second Li site, Li(2) is bonded in a distorted single-bond geometry to one Sr(1) and one Ag(1) atom. The Li(2)-Sr(1) bond length is 2.20 Å. The Li(2)-Ag(1) bond length is 2.20 Å. Sr(1) is bonded to one Li(2) and three equivalent Ag(1) atoms to form SrLiAg3 trigonal pyramids that share  a cornercorner with one Ag(1)Sr3Li2 trigonal bipyramid and corners with six equivalent Sr(1)LiAg3 trigonal pyramids. All Sr(1)-Ag(1) bond lengths are 2.99 Å. Ag(1) is bonded to one Li(1), one Li(2), and three equivalent Sr(1) atoms to form distorted AgSr3Li2 trigonal bipyramids that share corners with six equivalent Ag(1)Sr3Li2 trigonal bipyramids and  a cornercorner with one Sr(1)LiAg3 trigonal pyramid.