The material described by LaAlGe crystallizes in the tetragonal I4_1md space group. There are two inequivalent La sites. In the first La site, La(1) is bonded to six Al(1,1) and six Ge(1,1) atoms to form a mixture of face and edge-sharing LaAl6Ge6 cuboctahedra. In the second La site, La(1) is bonded to six equivalent Al(1) and six equivalent Ge(1) atoms to form a mixture of face and edge-sharing LaAl6Ge6 cuboctahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted trigonal planar geometry to six equivalent La(1) and three equivalent Ge(1) atoms. In the second Al site, Al(1) is bonded in a distorted trigonal planar geometry to six La(1,1) and three Ge(1,1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a distorted trigonal planar geometry to six La(1,1) and three Al(1,1) atoms. In the second Ge site, Ge(1) is bonded in a distorted trigonal planar geometry to six La(1,1) and three Al(1,1) atoms. is represented by the CIF file [CIF]
data_LaAlGe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.376
_cell_length_b   4.376
_cell_length_c   7.994
_cell_angle_alpha   105.881
_cell_angle_beta   105.881
_cell_angle_gamma   89.986
_symmetry_Int_Tables_number   1
_cell_volume   141.181
_cell_formula_units_Z   2
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  La0  1  1.000  0.999  0.999  1.0
  La  La1  1  0.749  0.250  0.499  1.0
  Al  Al2  1  0.583  0.583  0.166  1.0
  Al  Al3  1  0.333  0.833  0.666  1.0
  Ge  Ge4  1  0.416  0.416  0.832  1.0
  Ge  Ge5  1  0.166  0.666  0.332  1.0
[/CIF]
.
The material described by LaAlGe crystallizes in the tetragonal I4_1md space group. There are two inequivalent La sites. In the first La site, La(1) is bonded to six Al(1,1) and six Ge(1,1) atoms to form a mixture of face and edge-sharing LaAl6Ge6 cuboctahedra. In the second La site, La(1) is bonded to six equivalent Al(1) and six equivalent Ge(1) atoms to form a mixture of face and edge-sharing LaAl6Ge6 cuboctahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted trigonal planar geometry to six equivalent La(1) and three equivalent Ge(1) atoms. In the second Al site, Al(1) is bonded in a distorted trigonal planar geometry to six La(1,1) and three Ge(1,1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a distorted trigonal planar geometry to six La(1,1) and three Al(1,1) atoms. In the second Ge site, Ge(1) is bonded in a distorted trigonal planar geometry to six La(1,1) and three Al(1,1) atoms. is represented by the CIF file [CIF]
data_LaAlGe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.376
_cell_length_b   4.376
_cell_length_c   7.994
_cell_angle_alpha   105.881
_cell_angle_beta   105.881
_cell_angle_gamma   89.986
_symmetry_Int_Tables_number   1
_cell_volume   141.181
_cell_formula_units_Z   2
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  La0  1  1.000  0.999  0.999  1.0
  La  La1  1  0.749  0.250  0.499  1.0
  Al  Al2  1  0.583  0.583  0.166  1.0
  Al  Al3  1  0.333  0.833  0.666  1.0
  Ge  Ge4  1  0.416  0.416  0.832  1.0
  Ge  Ge5  1  0.166  0.666  0.332  1.0
[/CIF]
.