The structure described by Pr2(CuSn2)3 crystallizes in the tetragonal I4mm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to four equivalent Cu(1), four equivalent Sn(2), and four equivalent Sn(4) atoms to form a mixture of face and corner-sharing PrCu4Sn8 cuboctahedra. In the second Pr site, Pr(2) is bonded in a 16-coordinate geometry to four equivalent Cu(1), four equivalent Cu(2), four equivalent Sn(1), and four equivalent Sn(3) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 8-coordinate geometry to two equivalent Pr(1), two equivalent Pr(2), two equivalent Sn(3), and two equivalent Sn(4) atoms. In the second Cu site, Cu(2) is bonded in a 9-coordinate geometry to four equivalent Pr(2), one Sn(3), and four equivalent Sn(1) atoms. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Pr(2), two equivalent Cu(2), one Sn(2), and four equivalent Sn(1) atoms. In the second Sn site, Sn(2) is bonded in a 7-coordinate geometry to two equivalent Pr(1), one Sn(1), and four equivalent Sn(2) atoms. In the third Sn site, Sn(3) is bonded in a 9-coordinate geometry to four equivalent Pr(2), one Cu(2), and four equivalent Cu(1) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to four equivalent Pr(1) and four equivalent Cu(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pr2(CuSn2)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.479
_cell_length_b   13.479
_cell_length_c   13.479
_cell_angle_alpha   160.843
_cell_angle_beta   160.843
_cell_angle_gamma   27.221
_symmetry_Int_Tables_number   1
_cell_volume   263.616
_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  0.997  0.997  0.000  1.0
  Pr  Pr1  1  0.685  0.685  0.000  1.0
  Cu  Cu2  1  0.587  0.087  0.500  1.0
  Cu  Cu3  1  0.087  0.587  0.500  1.0
  Cu  Cu4  1  0.235  0.235  0.000  1.0
  Sn  Sn5  1  0.789  0.289  0.500  1.0
  Sn  Sn6  1  0.289  0.789  0.500  1.0
  Sn  Sn7  1  0.901  0.401  0.500  1.0
  Sn  Sn8  1  0.401  0.901  0.500  1.0
  Sn  Sn9  1  0.139  0.139  0.000  1.0
  Sn  Sn10  1  0.531  0.531  0.000  1.0
[/CIF]
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The structure described by Pr2(CuSn2)3 crystallizes in the tetragonal I4mm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to four equivalent Cu(1), four equivalent Sn(2), and four equivalent Sn(4) atoms to form a mixture of face and corner-sharing PrCu4Sn8 cuboctahedra. In the second Pr site, Pr(2) is bonded in a 16-coordinate geometry to four equivalent Cu(1), four equivalent Cu(2), four equivalent Sn(1), and four equivalent Sn(3) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 8-coordinate geometry to two equivalent Pr(1), two equivalent Pr(2), two equivalent Sn(3), and two equivalent Sn(4) atoms. In the second Cu site, Cu(2) is bonded in a 9-coordinate geometry to four equivalent Pr(2), one Sn(3), and four equivalent Sn(1) atoms. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Pr(2), two equivalent Cu(2), one Sn(2), and four equivalent Sn(1) atoms. In the second Sn site, Sn(2) is bonded in a 7-coordinate geometry to two equivalent Pr(1), one Sn(1), and four equivalent Sn(2) atoms. In the third Sn site, Sn(3) is bonded in a 9-coordinate geometry to four equivalent Pr(2), one Cu(2), and four equivalent Cu(1) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to four equivalent Pr(1) and four equivalent Cu(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pr2(CuSn2)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.479
_cell_length_b   13.479
_cell_length_c   13.479
_cell_angle_alpha   160.843
_cell_angle_beta   160.843
_cell_angle_gamma   27.221
_symmetry_Int_Tables_number   1
_cell_volume   263.616
_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  0.997  0.997  0.000  1.0
  Pr  Pr1  1  0.685  0.685  0.000  1.0
  Cu  Cu2  1  0.587  0.087  0.500  1.0
  Cu  Cu3  1  0.087  0.587  0.500  1.0
  Cu  Cu4  1  0.235  0.235  0.000  1.0
  Sn  Sn5  1  0.789  0.289  0.500  1.0
  Sn  Sn6  1  0.289  0.789  0.500  1.0
  Sn  Sn7  1  0.901  0.401  0.500  1.0
  Sn  Sn8  1  0.401  0.901  0.500  1.0
  Sn  Sn9  1  0.139  0.139  0.000  1.0
  Sn  Sn10  1  0.531  0.531  0.000  1.0
[/CIF]
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