The compound described by Pr5(Ir2Sn5)2 crystallizes in the tetragonal P4/mbm space group. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 16-coordinate geometry to four equivalent Ir(1), four equivalent Sn(2), and eight equivalent Sn(3) atoms. In the second Pr site, Pr(2) is bonded to four equivalent Ir(1), two equivalent Sn(1), two equivalent Sn(3), and four equivalent Sn(2) atoms to form distorted face-sharing PrSn8Ir4 cuboctahedra. In the third Pr site, Pr(3) is bonded in a 14-coordinate geometry to four equivalent Ir(1), two equivalent Sn(3), four equivalent Sn(1), and four equivalent Sn(2) atoms. Ir(1) is bonded in a 10-coordinate geometry to one Pr(1), two equivalent Pr(2), two equivalent Pr(3), one Sn(1), two equivalent Sn(2), and two equivalent Sn(3) atoms. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Pr(2), four equivalent Pr(3), two equivalent Ir(1), and one Sn(1) atom. In the second Sn site, Sn(2) is bonded in a 10-coordinate geometry to one Pr(1), two equivalent Pr(2), two equivalent Pr(3), two equivalent Ir(1), one Sn(2), and two equivalent Sn(3) atoms. In the third Sn site, Sn(3) is bonded in a 2-coordinate geometry to one Pr(2), one Pr(3), two equivalent Pr(1), two equivalent Ir(1), and two equivalent Sn(2) atoms. is represented by the CIF file [CIF]
data_Pr5(Sn5Ir2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.193
_cell_length_b   14.193
_cell_length_c   4.703
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   947.252
_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
  Pr  Pr2  1  0.676  0.176  0.500  1.0
  Pr  Pr3  1  0.324  0.824  0.500  1.0
  Pr  Pr4  1  0.176  0.324  0.500  1.0
  Pr  Pr5  1  0.824  0.676  0.500  1.0
  Pr  Pr6  1  0.887  0.387  0.500  1.0
  Pr  Pr7  1  0.113  0.613  0.500  1.0
  Pr  Pr8  1  0.387  0.113  0.500  1.0
  Pr  Pr9  1  0.613  0.887  0.500  1.0
  Sn  Sn10  1  0.570  0.070  0.000  1.0
  Sn  Sn11  1  0.430  0.930  0.000  1.0
  Sn  Sn12  1  0.070  0.430  0.000  1.0
  Sn  Sn13  1  0.930  0.570  0.000  1.0
  Sn  Sn14  1  0.655  0.698  0.000  1.0
  Sn  Sn15  1  0.345  0.302  0.000  1.0
  Sn  Sn16  1  0.155  0.802  0.000  1.0
  Sn  Sn17  1  0.845  0.198  0.000  1.0
  Sn  Sn18  1  0.302  0.655  0.000  1.0
  Sn  Sn19  1  0.698  0.345  0.000  1.0
  Sn  Sn20  1  0.198  0.155  0.000  1.0
  Sn  Sn21  1  0.802  0.845  0.000  1.0
  Sn  Sn22  1  0.663  0.506  0.500  1.0
  Sn  Sn23  1  0.337  0.494  0.500  1.0
  Sn  Sn24  1  0.163  0.994  0.500  1.0
  Sn  Sn25  1  0.837  0.006  0.500  1.0
  Sn  Sn26  1  0.494  0.663  0.500  1.0
  Sn  Sn27  1  0.506  0.337  0.500  1.0
  Sn  Sn28  1  0.006  0.163  0.500  1.0
  Sn  Sn29  1  0.994  0.837  0.500  1.0
  Ir  Ir30  1  0.746  0.527  0.000  1.0
  Ir  Ir31  1  0.254  0.473  0.000  1.0
  Ir  Ir32  1  0.246  0.973  0.000  1.0
  Ir  Ir33  1  0.754  0.027  0.000  1.0
  Ir  Ir34  1  0.473  0.746  0.000  1.0
  Ir  Ir35  1  0.527  0.254  0.000  1.0
  Ir  Ir36  1  0.027  0.246  0.000  1.0
  Ir  Ir37  1  0.973  0.754  0.000  1.0
[/CIF]
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The compound described by Pr5(Ir2Sn5)2 crystallizes in the tetragonal P4/mbm space group. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 16-coordinate geometry to four equivalent Ir(1), four equivalent Sn(2), and eight equivalent Sn(3) atoms. In the second Pr site, Pr(2) is bonded to four equivalent Ir(1), two equivalent Sn(1), two equivalent Sn(3), and four equivalent Sn(2) atoms to form distorted face-sharing PrSn8Ir4 cuboctahedra. In the third Pr site, Pr(3) is bonded in a 14-coordinate geometry to four equivalent Ir(1), two equivalent Sn(3), four equivalent Sn(1), and four equivalent Sn(2) atoms. Ir(1) is bonded in a 10-coordinate geometry to one Pr(1), two equivalent Pr(2), two equivalent Pr(3), one Sn(1), two equivalent Sn(2), and two equivalent Sn(3) atoms. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Pr(2), four equivalent Pr(3), two equivalent Ir(1), and one Sn(1) atom. In the second Sn site, Sn(2) is bonded in a 10-coordinate geometry to one Pr(1), two equivalent Pr(2), two equivalent Pr(3), two equivalent Ir(1), one Sn(2), and two equivalent Sn(3) atoms. In the third Sn site, Sn(3) is bonded in a 2-coordinate geometry to one Pr(2), one Pr(3), two equivalent Pr(1), two equivalent Ir(1), and two equivalent Sn(2) atoms. is represented by the CIF file [CIF]
data_Pr5(Sn5Ir2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.193
_cell_length_b   14.193
_cell_length_c   4.703
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   947.252
_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
  Pr  Pr2  1  0.676  0.176  0.500  1.0
  Pr  Pr3  1  0.324  0.824  0.500  1.0
  Pr  Pr4  1  0.176  0.324  0.500  1.0
  Pr  Pr5  1  0.824  0.676  0.500  1.0
  Pr  Pr6  1  0.887  0.387  0.500  1.0
  Pr  Pr7  1  0.113  0.613  0.500  1.0
  Pr  Pr8  1  0.387  0.113  0.500  1.0
  Pr  Pr9  1  0.613  0.887  0.500  1.0
  Sn  Sn10  1  0.570  0.070  0.000  1.0
  Sn  Sn11  1  0.430  0.930  0.000  1.0
  Sn  Sn12  1  0.070  0.430  0.000  1.0
  Sn  Sn13  1  0.930  0.570  0.000  1.0
  Sn  Sn14  1  0.655  0.698  0.000  1.0
  Sn  Sn15  1  0.345  0.302  0.000  1.0
  Sn  Sn16  1  0.155  0.802  0.000  1.0
  Sn  Sn17  1  0.845  0.198  0.000  1.0
  Sn  Sn18  1  0.302  0.655  0.000  1.0
  Sn  Sn19  1  0.698  0.345  0.000  1.0
  Sn  Sn20  1  0.198  0.155  0.000  1.0
  Sn  Sn21  1  0.802  0.845  0.000  1.0
  Sn  Sn22  1  0.663  0.506  0.500  1.0
  Sn  Sn23  1  0.337  0.494  0.500  1.0
  Sn  Sn24  1  0.163  0.994  0.500  1.0
  Sn  Sn25  1  0.837  0.006  0.500  1.0
  Sn  Sn26  1  0.494  0.663  0.500  1.0
  Sn  Sn27  1  0.506  0.337  0.500  1.0
  Sn  Sn28  1  0.006  0.163  0.500  1.0
  Sn  Sn29  1  0.994  0.837  0.500  1.0
  Ir  Ir30  1  0.746  0.527  0.000  1.0
  Ir  Ir31  1  0.254  0.473  0.000  1.0
  Ir  Ir32  1  0.246  0.973  0.000  1.0
  Ir  Ir33  1  0.754  0.027  0.000  1.0
  Ir  Ir34  1  0.473  0.746  0.000  1.0
  Ir  Ir35  1  0.527  0.254  0.000  1.0
  Ir  Ir36  1  0.027  0.246  0.000  1.0
  Ir  Ir37  1  0.973  0.754  0.000  1.0
[/CIF]
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