data_Li4ZnSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.02
_cell_length_b   5.02
_cell_length_c   5.02
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Li4ZnSi
_chemical_formula_sum   'Li4 Zn1 Si1'
_cell_volume   89.31
_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  Li0  1  0.44  0.65  0.65  1.0
  Li  Li1  1  0.65  0.65  0.44  1.0
  Li  Li2  1  0.65  0.44  0.65  1.0
  Li  Li3  1  0.44  0.44  0.44  1.0
  Zn  Zn5  1  0.77  0.77  0.77  1.0
  Si  Si4  1  0.0  0.0  0.0  1.0

data_Li4ZnSi
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.02
_cell_length_b   5.02
_cell_length_c   12.29
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Li4ZnSi
_chemical_formula_sum   'Li12 Zn3 Si3'
_cell_volume   267.94
_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
  Li  Li0  9  0.14  0.07  0.42  1.0
  Li  Li1  3  0.0  0.0  0.56  1.0
  Zn  Zn2  3  0.0  0.0  0.23  1.0
  Si  Si3  3  0.0  0.0  1.0  1.0

Li Li Li Li Zn Si
Li Li Li Li Zn Si 0 2 o o o 0 1 o o o 0 3 o o o 0 4 o o o 0 4 - o o 0 5 o + + 1 2 o o o 1 3 o o o 1 4 o o o 1 4 o o - 1 5 + + o 2 3 o o o 2 4 o o o 2 4 o - o 2 5 + o + 3 4 o o - 3 4 o - o 3 4 - o o 4 5 + + + 
Li4ZnSi crystallizes in the trigonal R3m space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 6-coordinate geometry to one Li(2), two equivalent Li(1), two equivalent Zn(1), and one Si(1) atom. The Li(1)-Li(2) bond length is 1.83 Å. Both Li(1)-Li(1) bond lengths are 1.06 Å. There is one shorter (2.42 Å) and one longer (2.88 Å) Li(1)-Zn(1) bond length. The Li(1)-Si(1) bond length is 2.51 Å. In the second Li site, Li(2) is bonded in a 6-coordinate geometry to three equivalent Li(1) and three equivalent Zn(1) atoms. All Li(2)-Zn(1) bond lengths are 2.90 Å. Zn(1) is bonded in a 10-coordinate geometry to three equivalent Li(2), six equivalent Li(1), and one Si(1) atom. The Zn(1)-Si(1) bond length is 2.78 Å. Si(1) is bonded in a 3-coordinate geometry to three equivalent Li(1) and one Zn(1) atom.