data_AgSnGeTe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.15
_cell_length_b   5.15
_cell_length_c   5.15
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AgSnGeTe
_chemical_formula_sum   'Ag1 Sn1 Ge1 Te1'
_cell_volume   96.71
_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
  Ag  Ag0  1  0.46  0.46  0.46  1.0
  Sn  Sn2  1  0.82  0.82  0.82  1.0
  Ge  Ge1  1  0.0  0.0  0.0  1.0
  Te  Te3  1  0.64  0.64  0.64  1.0

data_AgSnGeTe
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.15
_cell_length_b   5.15
_cell_length_c   12.62
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   AgSnGeTe
_chemical_formula_sum   'Ag3 Sn3 Ge3 Te3'
_cell_volume   290.12
_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
  Ag  Ag0  3  0.0  0.0  0.54  1.0
  Sn  Sn1  3  0.0  0.0  0.18  1.0
  Ge  Ge2  3  0.0  0.0  -0.0  1.0
  Te  Te3  3  0.0  0.0  0.36  1.0

Ag Sn Ge Te
AgSnGeTe crystallizes in the trigonal R3m space group. Ag(1) is bonded in a distorted single-bond geometry to three equivalent Sn(1) and one Te(1) atom. All Ag(1)-Sn(1) bond lengths are 2.99 Å. The Ag(1)-Te(1) bond length is 2.25 Å. Sn(1) is bonded in a distorted linear geometry to three equivalent Ag(1), one Ge(1), and one Te(1) atom. The Sn(1)-Ge(1) bond length is 2.25 Å. The Sn(1)-Te(1) bond length is 2.25 Å. Ge(1) is bonded to one Sn(1) and three equivalent Te(1) atoms to form distorted corner-sharing GeSnTe3 trigonal pyramids. All Ge(1)-Te(1) bond lengths are 2.99 Å. Te(1) is bonded in a distorted linear geometry to one Ag(1), one Sn(1), and three equivalent Ge(1) atoms.