The crystal structure described by PrAl2Ga2 crystallizes in the monoclinic C2/m space group. Pr(1) is bonded in a 16-coordinate geometry to eight equivalent Ga(1) and eight equivalent Al(1) atoms. Ga(1) is bonded in a 9-coordinate geometry to four equivalent Pr(1), one Ga(1), and four equivalent Al(1) atoms. Al(1) is bonded to four equivalent Pr(1) and four equivalent Ga(1) atoms to form a mixture of distorted edge, face, and corner-sharing AlPr4Ga4 tetrahedra. is represented by the CIF file [CIF]
data_Pr(AlGa)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.201
_cell_length_b   4.201
_cell_length_c   6.319
_cell_angle_alpha   108.967
_cell_angle_beta   108.967
_cell_angle_gamma   90.090
_symmetry_Int_Tables_number   1
_cell_volume   99.021
_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
  Pr  Pr0  1  0.000  0.000  0.000  1.0
  Al  Al1  1  0.247  0.753  0.500  1.0
  Al  Al2  1  0.753  0.247  0.500  1.0
  Ga  Ga3  1  0.611  0.611  0.224  1.0
  Ga  Ga4  1  0.389  0.389  0.776  1.0
[/CIF]
.
The crystal structure described by PrAl2Ga2 crystallizes in the monoclinic C2/m space group. Pr(1) is bonded in a 16-coordinate geometry to eight equivalent Ga(1) and eight equivalent Al(1) atoms. Ga(1) is bonded in a 9-coordinate geometry to four equivalent Pr(1), one Ga(1), and four equivalent Al(1) atoms. Al(1) is bonded to four equivalent Pr(1) and four equivalent Ga(1) atoms to form a mixture of distorted edge, face, and corner-sharing AlPr4Ga4 tetrahedra. is represented by the CIF file [CIF]
data_Pr(AlGa)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.201
_cell_length_b   4.201
_cell_length_c   6.319
_cell_angle_alpha   108.967
_cell_angle_beta   108.967
_cell_angle_gamma   90.090
_symmetry_Int_Tables_number   1
_cell_volume   99.021
_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
  Pr  Pr0  1  0.000  0.000  0.000  1.0
  Al  Al1  1  0.247  0.753  0.500  1.0
  Al  Al2  1  0.753  0.247  0.500  1.0
  Ga  Ga3  1  0.611  0.611  0.224  1.0
  Ga  Ga4  1  0.389  0.389  0.776  1.0
[/CIF]
.