The material described by Pr5Ge3 crystallizes in the hexagonal P6_3/mcm 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 Ge(1) atoms. In the second Pr site, Pr(2) is bonded to six equivalent Ge(1) atoms to form a mixture of distorted corner, edge, and face-sharing PrGe6 octahedra. The corner-sharing octahedral tilt angles are 35°. Ge(1) is bonded in a 9-coordinate geometry to four equivalent Pr(2) and five equivalent Pr(1) atoms. is represented by the CIF file [CIF]
data_Pr5Ge3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.900
_cell_length_b   8.900
_cell_length_c   6.827
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   468.305
_cell_formula_units_Z   2
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  0.753  0.750  1.0
  Pr  Pr1  1  0.000  0.247  0.250  1.0
  Pr  Pr2  1  0.753  0.753  0.250  1.0
  Pr  Pr3  1  0.753  0.000  0.750  1.0
  Pr  Pr4  1  0.247  0.247  0.750  1.0
  Pr  Pr5  1  0.247  0.000  0.250  1.0
  Pr  Pr6  1  0.333  0.667  0.500  1.0
  Pr  Pr7  1  0.667  0.333  0.000  1.0
  Pr  Pr8  1  0.667  0.333  0.500  1.0
  Pr  Pr9  1  0.333  0.667  0.000  1.0
  Ge  Ge10  1  0.392  0.000  0.750  1.0
  Ge  Ge11  1  0.392  0.392  0.250  1.0
  Ge  Ge12  1  0.000  0.608  0.250  1.0
  Ge  Ge13  1  0.000  0.392  0.750  1.0
  Ge  Ge14  1  0.608  0.608  0.750  1.0
  Ge  Ge15  1  0.608  0.000  0.250  1.0
[/CIF]
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The material described by Pr5Ge3 crystallizes in the hexagonal P6_3/mcm 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 Ge(1) atoms. In the second Pr site, Pr(2) is bonded to six equivalent Ge(1) atoms to form a mixture of distorted corner, edge, and face-sharing PrGe6 octahedra. The corner-sharing octahedral tilt angles are 35°. Ge(1) is bonded in a 9-coordinate geometry to four equivalent Pr(2) and five equivalent Pr(1) atoms. is represented by the CIF file [CIF]
data_Pr5Ge3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.900
_cell_length_b   8.900
_cell_length_c   6.827
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   468.305
_cell_formula_units_Z   2
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  0.753  0.750  1.0
  Pr  Pr1  1  0.000  0.247  0.250  1.0
  Pr  Pr2  1  0.753  0.753  0.250  1.0
  Pr  Pr3  1  0.753  0.000  0.750  1.0
  Pr  Pr4  1  0.247  0.247  0.750  1.0
  Pr  Pr5  1  0.247  0.000  0.250  1.0
  Pr  Pr6  1  0.333  0.667  0.500  1.0
  Pr  Pr7  1  0.667  0.333  0.000  1.0
  Pr  Pr8  1  0.667  0.333  0.500  1.0
  Pr  Pr9  1  0.333  0.667  0.000  1.0
  Ge  Ge10  1  0.392  0.000  0.750  1.0
  Ge  Ge11  1  0.392  0.392  0.250  1.0
  Ge  Ge12  1  0.000  0.608  0.250  1.0
  Ge  Ge13  1  0.000  0.392  0.750  1.0
  Ge  Ge14  1  0.608  0.608  0.750  1.0
  Ge  Ge15  1  0.608  0.000  0.250  1.0
[/CIF]
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