The compound described by BeLaAl3 crystallizes in the tetragonal I-4m2 space group. Be(1) is bonded to four equivalent La(1) and four equivalent Al(2) atoms to form a mixture of distorted edge and corner-sharing BeLa4Al4 tetrahedra. La(1) is bonded in a 16-coordinate geometry to four equivalent Be(1), four equivalent Al(1), and eight equivalent Al(2) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a 8-coordinate geometry to four equivalent La(1) and four equivalent Al(2) atoms. In the second Al site, Al(2) is bonded in a 9-coordinate geometry to two equivalent Be(1), four equivalent La(1), one Al(2), and two equivalent Al(1) atoms. is represented by the CIF file [CIF]
data_LaBeAl3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.179
_cell_length_b   6.179
_cell_length_c   6.179
_cell_angle_alpha   139.593
_cell_angle_beta   139.593
_cell_angle_gamma   58.471
_symmetry_Int_Tables_number   1
_cell_volume   98.192
_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  La0  1  0.000  0.000  0.000  1.0
  Be  Be1  1  0.250  0.750  0.500  1.0
  Al  Al2  1  0.750  0.250  0.500  1.0
  Al  Al3  1  0.620  0.620  0.000  1.0
  Al  Al4  1  0.380  0.380  0.000  1.0
[/CIF]
.
The compound described by BeLaAl3 crystallizes in the tetragonal I-4m2 space group. Be(1) is bonded to four equivalent La(1) and four equivalent Al(2) atoms to form a mixture of distorted edge and corner-sharing BeLa4Al4 tetrahedra. La(1) is bonded in a 16-coordinate geometry to four equivalent Be(1), four equivalent Al(1), and eight equivalent Al(2) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a 8-coordinate geometry to four equivalent La(1) and four equivalent Al(2) atoms. In the second Al site, Al(2) is bonded in a 9-coordinate geometry to two equivalent Be(1), four equivalent La(1), one Al(2), and two equivalent Al(1) atoms. is represented by the CIF file [CIF]
data_LaBeAl3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.179
_cell_length_b   6.179
_cell_length_c   6.179
_cell_angle_alpha   139.593
_cell_angle_beta   139.593
_cell_angle_gamma   58.471
_symmetry_Int_Tables_number   1
_cell_volume   98.192
_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  La0  1  0.000  0.000  0.000  1.0
  Be  Be1  1  0.250  0.750  0.500  1.0
  Al  Al2  1  0.750  0.250  0.500  1.0
  Al  Al3  1  0.620  0.620  0.000  1.0
  Al  Al4  1  0.380  0.380  0.000  1.0
[/CIF]
.