The structure described by Pr2AlSi is delta Molybdenum Boride-derived structured and crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 7-coordinate geometry to three equivalent Al(1) and four equivalent Si(1) atoms. In the second Pr site, Pr(2) is bonded in a 7-coordinate geometry to four equivalent Al(1) and three equivalent Si(1) atoms. Al(1) is bonded in a 9-coordinate geometry to three equivalent Pr(1), four equivalent Pr(2), and two equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to three equivalent Pr(2), four equivalent Pr(1), and two equivalent Al(1) atoms. is represented by the CIF file [CIF]
data_Pr2AlSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.130
_cell_length_b   6.130
_cell_length_c   4.127
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   136.694
_symmetry_Int_Tables_number   1
_cell_volume   106.373
_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  0.359  0.641  0.000  1.0
  Pr  Pr1  1  0.644  0.356  0.500  1.0
  Al  Al2  1  0.066  0.934  0.000  1.0
  Si  Si3  1  0.932  0.068  0.500  1.0
[/CIF]
.
The structure described by Pr2AlSi is delta Molybdenum Boride-derived structured and crystallizes in the orthorhombic Amm2 space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 7-coordinate geometry to three equivalent Al(1) and four equivalent Si(1) atoms. In the second Pr site, Pr(2) is bonded in a 7-coordinate geometry to four equivalent Al(1) and three equivalent Si(1) atoms. Al(1) is bonded in a 9-coordinate geometry to three equivalent Pr(1), four equivalent Pr(2), and two equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to three equivalent Pr(2), four equivalent Pr(1), and two equivalent Al(1) atoms. is represented by the CIF file [CIF]
data_Pr2AlSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.130
_cell_length_b   6.130
_cell_length_c   4.127
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   136.694
_symmetry_Int_Tables_number   1
_cell_volume   106.373
_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  0.359  0.641  0.000  1.0
  Pr  Pr1  1  0.644  0.356  0.500  1.0
  Al  Al2  1  0.066  0.934  0.000  1.0
  Si  Si3  1  0.932  0.068  0.500  1.0
[/CIF]
.