The material structure described by Pr9Ga4 crystallizes in the tetragonal I4/m space group. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a square co-planar geometry to four equivalent Ga(1) atoms. In the second Pr site, Pr(2) is bonded in a 4-coordinate geometry to four equivalent Ga(1) atoms. In the third Pr site, Pr(3) is bonded in a 3-coordinate geometry to five equivalent Ga(1) atoms. Ga(1) is bonded in a 10-coordinate geometry to one Pr(1), four equivalent Pr(2), and five equivalent Pr(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pr9Ga4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.206
_cell_length_b   9.013
_cell_length_c   9.017
_cell_angle_alpha   85.222
_cell_angle_beta   73.176
_cell_angle_gamma   73.231
_symmetry_Int_Tables_number   1
_cell_volume   387.787
_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  0.500  0.000  0.000  1.0
  Pr  Pr1  1  0.594  0.536  0.276  1.0
  Pr  Pr2  1  0.406  0.464  0.724  1.0
  Pr  Pr3  1  0.131  0.276  0.464  1.0
  Pr  Pr4  1  0.869  0.724  0.536  1.0
  Pr  Pr5  1  0.887  0.300  0.928  1.0
  Pr  Pr6  1  0.113  0.700  0.072  1.0
  Pr  Pr7  1  0.185  0.928  0.701  1.0
  Pr  Pr8  1  0.815  0.072  0.299  1.0
  Ga  Ga9  1  0.730  0.657  0.882  1.0
  Ga  Ga10  1  0.270  0.343  0.118  1.0
  Ga  Ga11  1  0.388  0.882  0.343  1.0
  Ga  Ga12  1  0.612  0.118  0.657  1.0
[/CIF]
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The material structure described by Pr9Ga4 crystallizes in the tetragonal I4/m space group. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a square co-planar geometry to four equivalent Ga(1) atoms. In the second Pr site, Pr(2) is bonded in a 4-coordinate geometry to four equivalent Ga(1) atoms. In the third Pr site, Pr(3) is bonded in a 3-coordinate geometry to five equivalent Ga(1) atoms. Ga(1) is bonded in a 10-coordinate geometry to one Pr(1), four equivalent Pr(2), and five equivalent Pr(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pr9Ga4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.206
_cell_length_b   9.013
_cell_length_c   9.017
_cell_angle_alpha   85.222
_cell_angle_beta   73.176
_cell_angle_gamma   73.231
_symmetry_Int_Tables_number   1
_cell_volume   387.787
_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  0.500  0.000  0.000  1.0
  Pr  Pr1  1  0.594  0.536  0.276  1.0
  Pr  Pr2  1  0.406  0.464  0.724  1.0
  Pr  Pr3  1  0.131  0.276  0.464  1.0
  Pr  Pr4  1  0.869  0.724  0.536  1.0
  Pr  Pr5  1  0.887  0.300  0.928  1.0
  Pr  Pr6  1  0.113  0.700  0.072  1.0
  Pr  Pr7  1  0.185  0.928  0.701  1.0
  Pr  Pr8  1  0.815  0.072  0.299  1.0
  Ga  Ga9  1  0.730  0.657  0.882  1.0
  Ga  Ga10  1  0.270  0.343  0.118  1.0
  Ga  Ga11  1  0.388  0.882  0.343  1.0
  Ga  Ga12  1  0.612  0.118  0.657  1.0
[/CIF]
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