The structure described by AlPr2 is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 5-coordinate geometry to five equivalent Al(1) atoms. In the second Pr site, Pr(2) is bonded in a 3-coordinate geometry to five equivalent Al(1) atoms. Al(1) is bonded in a 10-coordinate geometry to five equivalent Pr(1) and five equivalent Pr(2) atoms. is represented by the CIF file [CIF]
data_Pr2Al
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.297
_cell_length_b   6.799
_cell_length_c   9.952
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   358.409
_cell_formula_units_Z   4
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  0.250  0.805  0.921  1.0
  Pr  Pr1  1  0.250  0.305  0.579  1.0
  Pr  Pr2  1  0.750  0.195  0.079  1.0
  Pr  Pr3  1  0.750  0.695  0.421  1.0
  Pr  Pr4  1  0.250  0.976  0.299  1.0
  Pr  Pr5  1  0.250  0.476  0.201  1.0
  Pr  Pr6  1  0.750  0.024  0.701  1.0
  Pr  Pr7  1  0.750  0.524  0.799  1.0
  Al  Al8  1  0.250  0.288  0.898  1.0
  Al  Al9  1  0.250  0.788  0.602  1.0
  Al  Al10  1  0.750  0.712  0.102  1.0
  Al  Al11  1  0.750  0.212  0.398  1.0
[/CIF]
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The structure described by AlPr2 is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 5-coordinate geometry to five equivalent Al(1) atoms. In the second Pr site, Pr(2) is bonded in a 3-coordinate geometry to five equivalent Al(1) atoms. Al(1) is bonded in a 10-coordinate geometry to five equivalent Pr(1) and five equivalent Pr(2) atoms. is represented by the CIF file [CIF]
data_Pr2Al
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.297
_cell_length_b   6.799
_cell_length_c   9.952
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   358.409
_cell_formula_units_Z   4
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  0.250  0.805  0.921  1.0
  Pr  Pr1  1  0.250  0.305  0.579  1.0
  Pr  Pr2  1  0.750  0.195  0.079  1.0
  Pr  Pr3  1  0.750  0.695  0.421  1.0
  Pr  Pr4  1  0.250  0.976  0.299  1.0
  Pr  Pr5  1  0.250  0.476  0.201  1.0
  Pr  Pr6  1  0.750  0.024  0.701  1.0
  Pr  Pr7  1  0.750  0.524  0.799  1.0
  Al  Al8  1  0.250  0.288  0.898  1.0
  Al  Al9  1  0.250  0.788  0.602  1.0
  Al  Al10  1  0.750  0.712  0.102  1.0
  Al  Al11  1  0.750  0.212  0.398  1.0
[/CIF]
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