data_GaGe2Te
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.0
_cell_length_b   5.0
_cell_length_c   5.0
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   GaGe2Te
_chemical_formula_sum   'Ga1 Ge2 Te1'
_cell_volume   88.17
_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
  Ga  Ga0  1  0.0  0.0  0.0  1.0
  Ge  Ge1  1  0.3  0.3  0.3  1.0
  Ge  Ge2  1  0.77  0.77  0.77  1.0
  Te  Te3  1  0.53  0.53  0.53  1.0

data_GaGe2Te
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.0
_cell_length_b   5.0
_cell_length_c   12.24
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   GaGe2Te
_chemical_formula_sum   'Ga3 Ge6 Te3'
_cell_volume   264.52
_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
  Ga  Ga0  3  0.0  0.0  0.0  1.0
  Ge  Ge1  3  0.0  0.0  0.23  1.0
  Ge  Ge2  3  0.0  0.0  0.7  1.0
  Te  Te3  3  0.0  0.0  0.47  1.0

Ga Ge Ge Te
Ga Ge Ge Te 0 2 - - - 0 2 - - o 0 2 o - - 0 2 - o - 0 3 - - o 0 3 - o - 0 3 o - - 0 1 - o o 0 1 o - o 0 1 o o - 1 3 o - o 1 3 - o o 1 3 o o - 1 3 o o o 1 2 - o o 1 2 o - o 1 2 o o - 2 3 o o o 2 3 o o + 2 3 + o o 2 3 o + o 
GaGe2Te is Heusler structured and crystallizes in the trigonal R3m space group. Ga(1) is bonded in a 4-coordinate geometry to three equivalent Ge(1) and four equivalent Ge(2) atoms. All Ga(1)-Ge(1) bond lengths are 2.91 Å. There is one shorter (2.86 Å) and three longer (3.13 Å) Ga(1)-Ge(2) bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to three equivalent Ga(1) and four equivalent Te(1) atoms to form a mixture of distorted corner and edge-sharing GeGa3Te4 hexagonal pyramids. There is one shorter (2.86 Å) and three longer (3.13 Å) Ge(1)-Te(1) bond lengths. In the second Ge site, Ge(2) is bonded in a distorted body-centered cubic geometry to four equivalent Ga(1) and four equivalent Te(1) atoms. There is one shorter (2.86 Å) and three longer (3.13 Å) Ge(2)-Te(1) bond lengths. Te(1) is bonded in a 8-coordinate geometry to four equivalent Ge(1) and four equivalent Ge(2) atoms.