The crystal structure described by Pr4Ni7In8 is beta Plutonium-derived structured and crystallizes in the orthorhombic Cmmm space group. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 2-coordinate geometry to two equivalent Ni(2), four equivalent Ni(1), two equivalent In(4), and four equivalent In(6) atoms. In the second Pr site, Pr(2) is bonded in a 13-coordinate geometry to one Ni(4), two equivalent Ni(1), one In(2), one In(7), two equivalent In(1), two equivalent In(6), and four equivalent In(3) atoms. In the third Pr site, Pr(3) is bonded in a 18-coordinate geometry to two equivalent Ni(3), four equivalent Ni(2), four equivalent Ni(4), two equivalent In(3), two equivalent In(5), two equivalent In(6), and two equivalent In(7) atoms. There are four inequivalent Ni sites. In the first Ni site, Ni(3) is bonded in a 10-coordinate geometry to two equivalent Pr(3), four equivalent Ni(2), two equivalent In(5), and two equivalent In(6) atoms. In the second Ni site, Ni(4) is bonded in a 9-coordinate geometry to one Pr(2), two equivalent Pr(3), one Ni(2), one In(7), two equivalent In(3), and two equivalent In(6) atoms. In the third Ni site, Ni(1) is bonded in a 10-coordinate geometry to two equivalent Pr(1), two equivalent Pr(2), one Ni(1), one In(1), one In(4), one In(6), and two equivalent In(2) atoms. In the fourth Ni site, Ni(2) is bonded in a 10-coordinate geometry to one Pr(1), two equivalent Pr(3), one Ni(2), one Ni(4), two equivalent Ni(3), one In(5), and two equivalent In(6) atoms. There are seven inequivalent In sites. In the first In site, In(1) is bonded in a 12-coordinate geometry to four equivalent Pr(2), two equivalent Ni(1), two equivalent In(2), two equivalent In(3), and two equivalent In(7) atoms. In the second In site, In(2) is bonded in a 4-coordinate geometry to two equivalent Pr(2), four equivalent Ni(1), two equivalent In(1), and two equivalent In(4) atoms. In the third In site, In(3) is bonded in a 12-coordinate geometry to one Pr(3), four equivalent Pr(2), two equivalent Ni(4), one In(1), one In(3), one In(6), and two equivalent In(7) atoms. In the fourth In site, In(4) is bonded to four equivalent Pr(1), four equivalent Ni(1), and four equivalent In(2) atoms to form distorted face-sharing InPr4In4Ni4 cuboctahedra. In the fifth In site, In(5) is bonded to four equivalent Pr(3), four equivalent Ni(2), and four equivalent Ni(3) atoms to form distorted face-sharing InPr4Ni8 cuboctahedra. In the sixth In site, In(6) is bonded in a 12-coordinate geometry to one Pr(3), two equivalent Pr(1), two equivalent Pr(2), one Ni(1), one Ni(3), two equivalent Ni(2), two equivalent Ni(4), and one In(3) atom. In the seventh In site, In(7) is bonded in a distorted water-like geometry to two equivalent Pr(2), two equivalent Pr(3), two equivalent Ni(4), two equivalent In(1), and four equivalent In(3) atoms. is represented by the CIF file [CIF]
data_Pr4In8Ni7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.114
_cell_length_b   14.114
_cell_length_c   4.357
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   117.156
_symmetry_Int_Tables_number   1
_cell_volume   772.205
_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  0.184  0.184  0.000  1.0
  Pr  Pr1  1  0.816  0.816  0.000  1.0
  Pr  Pr2  1  0.349  0.995  0.000  1.0
  Pr  Pr3  1  0.651  0.005  0.000  1.0
  Pr  Pr4  1  0.995  0.349  0.000  1.0
  Pr  Pr5  1  0.005  0.651  0.000  1.0
  Pr  Pr6  1  0.606  0.394  0.500  1.0
  Pr  Pr7  1  0.394  0.606  0.500  1.0
  In  In8  1  0.190  0.810  0.500  1.0
  In  In9  1  0.810  0.190  0.500  1.0
  In  In10  1  0.087  0.913  0.000  1.0
  In  In11  1  0.913  0.087  0.000  1.0
  In  In12  1  0.874  0.442  0.500  1.0
  In  In13  1  0.126  0.558  0.500  1.0
  In  In14  1  0.442  0.874  0.500  1.0
  In  In15  1  0.558  0.126  0.500  1.0
  In  In16  1  0.000  0.000  0.500  1.0
  In  In17  1  0.500  0.500  0.000  1.0
  In  In18  1  0.631  0.819  0.500  1.0
  In  In19  1  0.369  0.181  0.500  1.0
  In  In20  1  0.819  0.631  0.500  1.0
  In  In21  1  0.181  0.369  0.500  1.0
  In  In22  1  0.723  0.277  0.000  1.0
  In  In23  1  0.277  0.723  0.000  1.0
  Ni  Ni24  1  0.190  0.001  0.500  1.0
  Ni  Ni25  1  0.810  0.999  0.500  1.0
  Ni  Ni26  1  0.001  0.190  0.500  1.0
  Ni  Ni27  1  0.999  0.810  0.500  1.0
  Ni  Ni28  1  0.698  0.589  0.000  1.0
  Ni  Ni29  1  0.302  0.411  0.000  1.0
  Ni  Ni30  1  0.589  0.698  0.000  1.0
  Ni  Ni31  1  0.411  0.302  0.000  1.0
  Ni  Ni32  1  0.622  0.622  0.500  1.0
  Ni  Ni33  1  0.378  0.378  0.500  1.0
  Ni  Ni34  1  0.484  0.792  0.000  1.0
  Ni  Ni35  1  0.516  0.208  0.000  1.0
  Ni  Ni36  1  0.792  0.484  0.000  1.0
  Ni  Ni37  1  0.208  0.516  0.000  1.0
[/CIF]
.
The crystal structure described by Pr4Ni7In8 is beta Plutonium-derived structured and crystallizes in the orthorhombic Cmmm space group. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 2-coordinate geometry to two equivalent Ni(2), four equivalent Ni(1), two equivalent In(4), and four equivalent In(6) atoms. In the second Pr site, Pr(2) is bonded in a 13-coordinate geometry to one Ni(4), two equivalent Ni(1), one In(2), one In(7), two equivalent In(1), two equivalent In(6), and four equivalent In(3) atoms. In the third Pr site, Pr(3) is bonded in a 18-coordinate geometry to two equivalent Ni(3), four equivalent Ni(2), four equivalent Ni(4), two equivalent In(3), two equivalent In(5), two equivalent In(6), and two equivalent In(7) atoms. There are four inequivalent Ni sites. In the first Ni site, Ni(3) is bonded in a 10-coordinate geometry to two equivalent Pr(3), four equivalent Ni(2), two equivalent In(5), and two equivalent In(6) atoms. In the second Ni site, Ni(4) is bonded in a 9-coordinate geometry to one Pr(2), two equivalent Pr(3), one Ni(2), one In(7), two equivalent In(3), and two equivalent In(6) atoms. In the third Ni site, Ni(1) is bonded in a 10-coordinate geometry to two equivalent Pr(1), two equivalent Pr(2), one Ni(1), one In(1), one In(4), one In(6), and two equivalent In(2) atoms. In the fourth Ni site, Ni(2) is bonded in a 10-coordinate geometry to one Pr(1), two equivalent Pr(3), one Ni(2), one Ni(4), two equivalent Ni(3), one In(5), and two equivalent In(6) atoms. There are seven inequivalent In sites. In the first In site, In(1) is bonded in a 12-coordinate geometry to four equivalent Pr(2), two equivalent Ni(1), two equivalent In(2), two equivalent In(3), and two equivalent In(7) atoms. In the second In site, In(2) is bonded in a 4-coordinate geometry to two equivalent Pr(2), four equivalent Ni(1), two equivalent In(1), and two equivalent In(4) atoms. In the third In site, In(3) is bonded in a 12-coordinate geometry to one Pr(3), four equivalent Pr(2), two equivalent Ni(4), one In(1), one In(3), one In(6), and two equivalent In(7) atoms. In the fourth In site, In(4) is bonded to four equivalent Pr(1), four equivalent Ni(1), and four equivalent In(2) atoms to form distorted face-sharing InPr4In4Ni4 cuboctahedra. In the fifth In site, In(5) is bonded to four equivalent Pr(3), four equivalent Ni(2), and four equivalent Ni(3) atoms to form distorted face-sharing InPr4Ni8 cuboctahedra. In the sixth In site, In(6) is bonded in a 12-coordinate geometry to one Pr(3), two equivalent Pr(1), two equivalent Pr(2), one Ni(1), one Ni(3), two equivalent Ni(2), two equivalent Ni(4), and one In(3) atom. In the seventh In site, In(7) is bonded in a distorted water-like geometry to two equivalent Pr(2), two equivalent Pr(3), two equivalent Ni(4), two equivalent In(1), and four equivalent In(3) atoms. is represented by the CIF file [CIF]
data_Pr4In8Ni7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.114
_cell_length_b   14.114
_cell_length_c   4.357
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   117.156
_symmetry_Int_Tables_number   1
_cell_volume   772.205
_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  0.184  0.184  0.000  1.0
  Pr  Pr1  1  0.816  0.816  0.000  1.0
  Pr  Pr2  1  0.349  0.995  0.000  1.0
  Pr  Pr3  1  0.651  0.005  0.000  1.0
  Pr  Pr4  1  0.995  0.349  0.000  1.0
  Pr  Pr5  1  0.005  0.651  0.000  1.0
  Pr  Pr6  1  0.606  0.394  0.500  1.0
  Pr  Pr7  1  0.394  0.606  0.500  1.0
  In  In8  1  0.190  0.810  0.500  1.0
  In  In9  1  0.810  0.190  0.500  1.0
  In  In10  1  0.087  0.913  0.000  1.0
  In  In11  1  0.913  0.087  0.000  1.0
  In  In12  1  0.874  0.442  0.500  1.0
  In  In13  1  0.126  0.558  0.500  1.0
  In  In14  1  0.442  0.874  0.500  1.0
  In  In15  1  0.558  0.126  0.500  1.0
  In  In16  1  0.000  0.000  0.500  1.0
  In  In17  1  0.500  0.500  0.000  1.0
  In  In18  1  0.631  0.819  0.500  1.0
  In  In19  1  0.369  0.181  0.500  1.0
  In  In20  1  0.819  0.631  0.500  1.0
  In  In21  1  0.181  0.369  0.500  1.0
  In  In22  1  0.723  0.277  0.000  1.0
  In  In23  1  0.277  0.723  0.000  1.0
  Ni  Ni24  1  0.190  0.001  0.500  1.0
  Ni  Ni25  1  0.810  0.999  0.500  1.0
  Ni  Ni26  1  0.001  0.190  0.500  1.0
  Ni  Ni27  1  0.999  0.810  0.500  1.0
  Ni  Ni28  1  0.698  0.589  0.000  1.0
  Ni  Ni29  1  0.302  0.411  0.000  1.0
  Ni  Ni30  1  0.589  0.698  0.000  1.0
  Ni  Ni31  1  0.411  0.302  0.000  1.0
  Ni  Ni32  1  0.622  0.622  0.500  1.0
  Ni  Ni33  1  0.378  0.378  0.500  1.0
  Ni  Ni34  1  0.484  0.792  0.000  1.0
  Ni  Ni35  1  0.516  0.208  0.000  1.0
  Ni  Ni36  1  0.792  0.484  0.000  1.0
  Ni  Ni37  1  0.208  0.516  0.000  1.0
[/CIF]
.