data_La2AlGa
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.41
_cell_length_b   5.41
_cell_length_c   5.41
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   La2AlGa
_chemical_formula_sum   'La2 Al1 Ga1'
_cell_volume   112.13
_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
  La  La2  1  0.83  0.83  0.83  1.0
  La  La3  1  0.91  0.91  0.91  1.0
  Al  Al0  1  0.0  0.0  0.0  1.0
  Ga  Ga1  1  0.74  0.74  0.74  1.0

data_La2AlGa
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.41
_cell_length_b   5.41
_cell_length_c   13.26
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   La2AlGa
_chemical_formula_sum   'La6 Al3 Ga3'
_cell_volume   336.4
_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
  La  La0  3  0.0  0.0  0.09  1.0
  La  La1  3  0.0  0.0  0.17  1.0
  Al  Al2  3  0.0  0.0  0.0  1.0
  Ga  Ga3  3  0.0  0.0  0.26  1.0

La La Al Ga
La La Al Ga 0 3 o o o 0 1 o o o 1 2 + + + 
Ga(La)LaAl is diamond structured and crystallizes in the trigonal R3m space group. The structure is zero-dimensional and consists of three Ga(La) clusters and three LaAl clusters. In each Ga(La) cluster, La(1) is bonded in a distorted single-bond geometry to one Ga(1) atom. The La(1)-Ga(1) bond length is 1.14 Å. Ga(1) is bonded in a single-bond geometry to one La(1) atom. In each LaAl cluster, La(2) is bonded in a distorted single-bond geometry to one Al(1) atom. The La(2)-Al(1) bond length is 1.14 Å. Al(1) is bonded in a single-bond geometry to one La(2) atom.