data_GdAl2Te
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.18
_cell_length_b   5.18
_cell_length_c   5.18
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   GdAl2Te
_chemical_formula_sum   'Gd1 Al2 Te1'
_cell_volume   98.09
_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
  Gd  Gd2  1  0.66  0.66  0.66  1.0
  Al  Al0  1  0.83  0.83  0.83  1.0
  Al  Al1  1  0.49  0.49  0.49  1.0
  Te  Te3  1  0.0  0.0  0.0  1.0

data_GdAl2Te
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.18
_cell_length_b   5.18
_cell_length_c   12.68
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   GdAl2Te
_chemical_formula_sum   'Gd3 Al6 Te3'
_cell_volume   294.28
_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
  Gd  Gd0  3  0.0  0.0  0.34  1.0
  Al  Al1  3  0.0  0.0  0.17  1.0
  Al  Al2  3  0.0  0.0  0.51  1.0
  Te  Te3  3  0.0  0.0  0.0  1.0

Gd Al Al Te
GdAl2Te crystallizes in the trigonal R3m space group. Gd(1) is bonded to one Al(1), one Al(2), and three equivalent Te(1) atoms to form distorted GdAl2Te3 trigonal bipyramids that share corners with six equivalent Gd(1)Al2Te3 trigonal bipyramids and  a cornercorner with one Te(1)Gd3Al trigonal pyramid. The Gd(1)-Al(1) bond length is 2.15 Å. The Gd(1)-Al(2) bond length is 2.15 Å. All Gd(1)-Te(1) bond lengths are 2.99 Å. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a linear geometry to one Gd(1) and one Te(1) atom. The Al(1)-Te(1) bond length is 2.15 Å. In the second Al site, Al(2) is bonded in a single-bond geometry to one Gd(1) atom. Te(1) is bonded to three equivalent Gd(1) and one Al(1) atom to form TeGd3Al trigonal pyramids that share  a cornercorner with one Gd(1)Al2Te3 trigonal bipyramid and corners with six equivalent Te(1)Gd3Al trigonal pyramids.