The material described by PrCu9Cd2 crystallizes in the tetragonal P4/mbm space group. Pr(1) is bonded in a 20-coordinate geometry to eight equivalent Cu(1), eight equivalent Cu(2), and four equivalent Cd(1) atoms. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent Pr(1), one Cu(3), two equivalent Cu(1), four equivalent Cu(2), and three equivalent Cd(1) atoms to form distorted CuPr2Cd3Cu7 cuboctahedra that share  a cornercorner with one Cu(3)Cd4Cu8 cuboctahedra, corners with six equivalent Cu(2)Pr2Cd2Cu8 cuboctahedra, corners with eleven equivalent Cu(1)Pr2Cd3Cu7 cuboctahedra, edges with four equivalent Cu(2)Pr2Cd2Cu8 cuboctahedra, edges with five equivalent Cu(1)Pr2Cd3Cu7 cuboctahedra, faces with three equivalent Cu(3)Cd4Cu8 cuboctahedra, faces with seven equivalent Cu(1)Pr2Cd3Cu7 cuboctahedra, and faces with ten equivalent Cu(2)Pr2Cd2Cu8 cuboctahedra. In the second Cu site, Cu(2) is bonded to two equivalent Pr(1), one Cu(3), three equivalent Cu(2), four equivalent Cu(1), and two equivalent Cd(1) atoms to form distorted CuPr2Cd2Cu8 cuboctahedra that share corners with three equivalent Cu(3)Cd4Cu8 cuboctahedra, corners with six equivalent Cu(1)Pr2Cd3Cu7 cuboctahedra, corners with eleven equivalent Cu(2)Pr2Cd2Cu8 cuboctahedra, edges with two equivalent Cu(2)Pr2Cd2Cu8 cuboctahedra, edges with four equivalent Cu(1)Pr2Cd3Cu7 cuboctahedra, faces with two equivalent Cu(3)Cd4Cu8 cuboctahedra, faces with seven equivalent Cu(2)Pr2Cd2Cu8 cuboctahedra, and faces with ten equivalent Cu(1)Pr2Cd3Cu7 cuboctahedra. In the third Cu site, Cu(3) is bonded to four equivalent Cu(1), four equivalent Cu(2), and four equivalent Cd(1) atoms to form CuCd4Cu8 cuboctahedra that share corners with four equivalent Cu(1)Pr2Cd3Cu7 cuboctahedra, corners with twelve equivalent Cu(2)Pr2Cd2Cu8 cuboctahedra, edges with two equivalent Cu(3)Cd4Cu8 cuboctahedra, faces with eight equivalent Cu(2)Pr2Cd2Cu8 cuboctahedra, and faces with twelve equivalent Cu(1)Pr2Cd3Cu7 cuboctahedra. Cd(1) is bonded in a 15-coordinate geometry to two equivalent Pr(1), two equivalent Cu(3), four equivalent Cu(2), six equivalent Cu(1), and one Cd(1) atom. is represented by the CIF card [CIF]
data_PrCd2Cu9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.485
_cell_length_b   8.485
_cell_length_c   4.998
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   359.808
_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  0.500  0.500  0.000  1.0
  Pr  Pr1  1  0.000  0.000  0.000  1.0
  Cd  Cd2  1  0.120  0.620  0.000  1.0
  Cd  Cd3  1  0.880  0.380  0.000  1.0
  Cd  Cd4  1  0.380  0.120  0.000  1.0
  Cd  Cd5  1  0.620  0.880  0.000  1.0
  Cu  Cu6  1  0.321  0.821  0.752  1.0
  Cu  Cu7  1  0.679  0.179  0.752  1.0
  Cu  Cu8  1  0.179  0.321  0.752  1.0
  Cu  Cu9  1  0.821  0.679  0.752  1.0
  Cu  Cu10  1  0.679  0.179  0.248  1.0
  Cu  Cu11  1  0.321  0.821  0.248  1.0
  Cu  Cu12  1  0.821  0.679  0.248  1.0
  Cu  Cu13  1  0.179  0.321  0.248  1.0
  Cu  Cu14  1  0.564  0.709  0.500  1.0
  Cu  Cu15  1  0.436  0.291  0.500  1.0
  Cu  Cu16  1  0.936  0.209  0.500  1.0
  Cu  Cu17  1  0.064  0.791  0.500  1.0
  Cu  Cu18  1  0.709  0.436  0.500  1.0
  Cu  Cu19  1  0.291  0.564  0.500  1.0
  Cu  Cu20  1  0.209  0.064  0.500  1.0
  Cu  Cu21  1  0.791  0.936  0.500  1.0
  Cu  Cu22  1  0.000  0.500  0.500  1.0
  Cu  Cu23  1  0.500  0.000  0.500  1.0
[/CIF]
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The material described by PrCu9Cd2 crystallizes in the tetragonal P4/mbm space group. Pr(1) is bonded in a 20-coordinate geometry to eight equivalent Cu(1), eight equivalent Cu(2), and four equivalent Cd(1) atoms. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent Pr(1), one Cu(3), two equivalent Cu(1), four equivalent Cu(2), and three equivalent Cd(1) atoms to form distorted CuPr2Cd3Cu7 cuboctahedra that share  a cornercorner with one Cu(3)Cd4Cu8 cuboctahedra, corners with six equivalent Cu(2)Pr2Cd2Cu8 cuboctahedra, corners with eleven equivalent Cu(1)Pr2Cd3Cu7 cuboctahedra, edges with four equivalent Cu(2)Pr2Cd2Cu8 cuboctahedra, edges with five equivalent Cu(1)Pr2Cd3Cu7 cuboctahedra, faces with three equivalent Cu(3)Cd4Cu8 cuboctahedra, faces with seven equivalent Cu(1)Pr2Cd3Cu7 cuboctahedra, and faces with ten equivalent Cu(2)Pr2Cd2Cu8 cuboctahedra. In the second Cu site, Cu(2) is bonded to two equivalent Pr(1), one Cu(3), three equivalent Cu(2), four equivalent Cu(1), and two equivalent Cd(1) atoms to form distorted CuPr2Cd2Cu8 cuboctahedra that share corners with three equivalent Cu(3)Cd4Cu8 cuboctahedra, corners with six equivalent Cu(1)Pr2Cd3Cu7 cuboctahedra, corners with eleven equivalent Cu(2)Pr2Cd2Cu8 cuboctahedra, edges with two equivalent Cu(2)Pr2Cd2Cu8 cuboctahedra, edges with four equivalent Cu(1)Pr2Cd3Cu7 cuboctahedra, faces with two equivalent Cu(3)Cd4Cu8 cuboctahedra, faces with seven equivalent Cu(2)Pr2Cd2Cu8 cuboctahedra, and faces with ten equivalent Cu(1)Pr2Cd3Cu7 cuboctahedra. In the third Cu site, Cu(3) is bonded to four equivalent Cu(1), four equivalent Cu(2), and four equivalent Cd(1) atoms to form CuCd4Cu8 cuboctahedra that share corners with four equivalent Cu(1)Pr2Cd3Cu7 cuboctahedra, corners with twelve equivalent Cu(2)Pr2Cd2Cu8 cuboctahedra, edges with two equivalent Cu(3)Cd4Cu8 cuboctahedra, faces with eight equivalent Cu(2)Pr2Cd2Cu8 cuboctahedra, and faces with twelve equivalent Cu(1)Pr2Cd3Cu7 cuboctahedra. Cd(1) is bonded in a 15-coordinate geometry to two equivalent Pr(1), two equivalent Cu(3), four equivalent Cu(2), six equivalent Cu(1), and one Cd(1) atom. is represented by the CIF card [CIF]
data_PrCd2Cu9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.485
_cell_length_b   8.485
_cell_length_c   4.998
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   359.808
_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  0.500  0.500  0.000  1.0
  Pr  Pr1  1  0.000  0.000  0.000  1.0
  Cd  Cd2  1  0.120  0.620  0.000  1.0
  Cd  Cd3  1  0.880  0.380  0.000  1.0
  Cd  Cd4  1  0.380  0.120  0.000  1.0
  Cd  Cd5  1  0.620  0.880  0.000  1.0
  Cu  Cu6  1  0.321  0.821  0.752  1.0
  Cu  Cu7  1  0.679  0.179  0.752  1.0
  Cu  Cu8  1  0.179  0.321  0.752  1.0
  Cu  Cu9  1  0.821  0.679  0.752  1.0
  Cu  Cu10  1  0.679  0.179  0.248  1.0
  Cu  Cu11  1  0.321  0.821  0.248  1.0
  Cu  Cu12  1  0.821  0.679  0.248  1.0
  Cu  Cu13  1  0.179  0.321  0.248  1.0
  Cu  Cu14  1  0.564  0.709  0.500  1.0
  Cu  Cu15  1  0.436  0.291  0.500  1.0
  Cu  Cu16  1  0.936  0.209  0.500  1.0
  Cu  Cu17  1  0.064  0.791  0.500  1.0
  Cu  Cu18  1  0.709  0.436  0.500  1.0
  Cu  Cu19  1  0.291  0.564  0.500  1.0
  Cu  Cu20  1  0.209  0.064  0.500  1.0
  Cu  Cu21  1  0.791  0.936  0.500  1.0
  Cu  Cu22  1  0.000  0.500  0.500  1.0
  Cu  Cu23  1  0.500  0.000  0.500  1.0
[/CIF]
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