The compound described by Ce9(Ni13P6)2 crystallizes in the hexagonal P-6m2 space group. There are three inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 16-coordinate geometry to two equivalent Ni(2), two equivalent Ni(5), two equivalent Ni(7), four equivalent Ni(1), two equivalent P(2), and four equivalent P(1) atoms. In the second Ce site, Ce(2) is bonded in a 14-coordinate geometry to two equivalent Ni(1), two equivalent Ni(5), two equivalent Ni(8), four equivalent Ni(6), and four equivalent P(3) atoms. In the third Ce site, Ce(3) is bonded in a 16-coordinate geometry to two equivalent Ni(1), two equivalent Ni(3), two equivalent Ni(4), two equivalent Ni(6), four equivalent Ni(2), and four equivalent P(3) atoms. There are eight inequivalent Ni sites. In the first Ni site, Ni(8) is bonded in a 9-coordinate geometry to six equivalent Ce(2) and three equivalent Ni(6) atoms. In the second Ni site, Ni(1) is bonded to one Ce(2), one Ce(3), two equivalent Ce(1), one P(1), one P(2), and two equivalent P(3) atoms to form a mixture of distorted corner, edge, and face-sharing NiCe4P4 tetrahedra. In the third Ni site, Ni(2) is bonded in a 3-coordinate geometry to one Ce(1), two equivalent Ce(3), one Ni(3), one P(3), and two equivalent P(2) atoms. In the fourth Ni site, Ni(3) is bonded in a 10-coordinate geometry to two equivalent Ce(3), two equivalent Ni(2), two equivalent Ni(3), and four equivalent Ni(4) atoms. In the fifth Ni site, Ni(4) is bonded in a distorted single-bond geometry to two equivalent Ce(3), four equivalent Ni(3), and one P(2) atom. In the sixth Ni site, Ni(5) is bonded to two equivalent Ce(1), two equivalent Ce(2), two equivalent P(1), and two equivalent P(3) atoms to form a mixture of distorted corner, edge, and face-sharing NiCe4P4 tetrahedra. In the seventh Ni site, Ni(6) is bonded in a 9-coordinate geometry to two equivalent Ce(3), four equivalent Ce(2), one Ni(8), and two equivalent P(3) atoms. In the eighth Ni site, Ni(7) is bonded in a 9-coordinate geometry to six equivalent Ce(1) and three equivalent P(1) atoms. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to four equivalent Ce(1), one Ni(7), two equivalent Ni(1), and two equivalent Ni(5) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Ce(1), one Ni(4), two equivalent Ni(1), and four equivalent Ni(2) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to two equivalent Ce(2), two equivalent Ce(3), one Ni(2), one Ni(5), one Ni(6), and two equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_Ce9(Ni13P6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.370
_cell_length_b   14.370
_cell_length_c   3.848
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   688.054
_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
  Ce  Ce0  1  0.150  0.575  0.500  1.0
  Ce  Ce1  1  0.092  0.908  0.000  1.0
  Ce  Ce2  1  0.815  0.908  0.000  1.0
  Ce  Ce3  1  0.809  0.618  0.000  1.0
  Ce  Ce4  1  0.382  0.191  0.000  1.0
  Ce  Ce5  1  0.809  0.191  0.000  1.0
  Ce  Ce6  1  0.425  0.850  0.500  1.0
  Ce  Ce7  1  0.092  0.185  0.000  1.0
  Ce  Ce8  1  0.425  0.575  0.500  1.0
  Ni  Ni9  1  0.620  0.672  0.000  1.0
  Ni  Ni10  1  0.923  0.377  0.500  1.0
  Ni  Ni11  1  0.723  0.447  0.500  1.0
  Ni  Ni12  1  0.602  0.398  0.000  1.0
  Ni  Ni13  1  0.051  0.672  0.000  1.0
  Ni  Ni14  1  0.328  0.949  0.000  1.0
  Ni  Ni15  1  0.189  0.379  0.500  1.0
  Ni  Ni16  1  0.623  0.077  0.500  1.0
  Ni  Ni17  1  0.795  0.398  0.000  1.0
  Ni  Ni18  1  0.623  0.546  0.500  1.0
  Ni  Ni19  1  0.621  0.811  0.500  1.0
  Ni  Ni20  1  0.723  0.277  0.500  1.0
  Ni  Ni21  1  0.923  0.546  0.500  1.0
  Ni  Ni22  1  0.193  0.096  0.500  1.0
  Ni  Ni23  1  0.189  0.811  0.500  1.0
  Ni  Ni24  1  0.328  0.380  0.000  1.0
  Ni  Ni25  1  0.904  0.096  0.500  1.0
  Ni  Ni26  1  0.454  0.077  0.500  1.0
  Ni  Ni27  1  0.051  0.380  0.000  1.0
  Ni  Ni28  1  0.620  0.949  0.000  1.0
  Ni  Ni29  1  0.602  0.205  0.000  1.0
  Ni  Ni30  1  0.333  0.667  0.000  1.0
  Ni  Ni31  1  0.553  0.277  0.500  1.0
  Ni  Ni32  1  0.454  0.377  0.500  1.0
  Ni  Ni33  1  0.000  0.000  0.500  1.0
  Ni  Ni34  1  0.904  0.807  0.500  1.0
  P  P35  1  0.241  0.759  0.000  1.0
  P  P36  1  0.515  0.485  0.000  1.0
  P  P37  1  0.970  0.485  0.000  1.0
  P  P38  1  0.003  0.277  0.500  1.0
  P  P39  1  0.241  0.481  0.000  1.0
  P  P40  1  0.515  0.030  0.000  1.0
  P  P41  1  0.003  0.725  0.500  1.0
  P  P42  1  0.275  0.997  0.500  1.0
  P  P43  1  0.519  0.759  0.000  1.0
  P  P44  1  0.723  0.725  0.500  1.0
  P  P45  1  0.723  0.997  0.500  1.0
  P  P46  1  0.275  0.277  0.500  1.0
[/CIF]
.
The compound described by Ce9(Ni13P6)2 crystallizes in the hexagonal P-6m2 space group. There are three inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 16-coordinate geometry to two equivalent Ni(2), two equivalent Ni(5), two equivalent Ni(7), four equivalent Ni(1), two equivalent P(2), and four equivalent P(1) atoms. In the second Ce site, Ce(2) is bonded in a 14-coordinate geometry to two equivalent Ni(1), two equivalent Ni(5), two equivalent Ni(8), four equivalent Ni(6), and four equivalent P(3) atoms. In the third Ce site, Ce(3) is bonded in a 16-coordinate geometry to two equivalent Ni(1), two equivalent Ni(3), two equivalent Ni(4), two equivalent Ni(6), four equivalent Ni(2), and four equivalent P(3) atoms. There are eight inequivalent Ni sites. In the first Ni site, Ni(8) is bonded in a 9-coordinate geometry to six equivalent Ce(2) and three equivalent Ni(6) atoms. In the second Ni site, Ni(1) is bonded to one Ce(2), one Ce(3), two equivalent Ce(1), one P(1), one P(2), and two equivalent P(3) atoms to form a mixture of distorted corner, edge, and face-sharing NiCe4P4 tetrahedra. In the third Ni site, Ni(2) is bonded in a 3-coordinate geometry to one Ce(1), two equivalent Ce(3), one Ni(3), one P(3), and two equivalent P(2) atoms. In the fourth Ni site, Ni(3) is bonded in a 10-coordinate geometry to two equivalent Ce(3), two equivalent Ni(2), two equivalent Ni(3), and four equivalent Ni(4) atoms. In the fifth Ni site, Ni(4) is bonded in a distorted single-bond geometry to two equivalent Ce(3), four equivalent Ni(3), and one P(2) atom. In the sixth Ni site, Ni(5) is bonded to two equivalent Ce(1), two equivalent Ce(2), two equivalent P(1), and two equivalent P(3) atoms to form a mixture of distorted corner, edge, and face-sharing NiCe4P4 tetrahedra. In the seventh Ni site, Ni(6) is bonded in a 9-coordinate geometry to two equivalent Ce(3), four equivalent Ce(2), one Ni(8), and two equivalent P(3) atoms. In the eighth Ni site, Ni(7) is bonded in a 9-coordinate geometry to six equivalent Ce(1) and three equivalent P(1) atoms. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to four equivalent Ce(1), one Ni(7), two equivalent Ni(1), and two equivalent Ni(5) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Ce(1), one Ni(4), two equivalent Ni(1), and four equivalent Ni(2) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to two equivalent Ce(2), two equivalent Ce(3), one Ni(2), one Ni(5), one Ni(6), and two equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_Ce9(Ni13P6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.370
_cell_length_b   14.370
_cell_length_c   3.848
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   688.054
_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
  Ce  Ce0  1  0.150  0.575  0.500  1.0
  Ce  Ce1  1  0.092  0.908  0.000  1.0
  Ce  Ce2  1  0.815  0.908  0.000  1.0
  Ce  Ce3  1  0.809  0.618  0.000  1.0
  Ce  Ce4  1  0.382  0.191  0.000  1.0
  Ce  Ce5  1  0.809  0.191  0.000  1.0
  Ce  Ce6  1  0.425  0.850  0.500  1.0
  Ce  Ce7  1  0.092  0.185  0.000  1.0
  Ce  Ce8  1  0.425  0.575  0.500  1.0
  Ni  Ni9  1  0.620  0.672  0.000  1.0
  Ni  Ni10  1  0.923  0.377  0.500  1.0
  Ni  Ni11  1  0.723  0.447  0.500  1.0
  Ni  Ni12  1  0.602  0.398  0.000  1.0
  Ni  Ni13  1  0.051  0.672  0.000  1.0
  Ni  Ni14  1  0.328  0.949  0.000  1.0
  Ni  Ni15  1  0.189  0.379  0.500  1.0
  Ni  Ni16  1  0.623  0.077  0.500  1.0
  Ni  Ni17  1  0.795  0.398  0.000  1.0
  Ni  Ni18  1  0.623  0.546  0.500  1.0
  Ni  Ni19  1  0.621  0.811  0.500  1.0
  Ni  Ni20  1  0.723  0.277  0.500  1.0
  Ni  Ni21  1  0.923  0.546  0.500  1.0
  Ni  Ni22  1  0.193  0.096  0.500  1.0
  Ni  Ni23  1  0.189  0.811  0.500  1.0
  Ni  Ni24  1  0.328  0.380  0.000  1.0
  Ni  Ni25  1  0.904  0.096  0.500  1.0
  Ni  Ni26  1  0.454  0.077  0.500  1.0
  Ni  Ni27  1  0.051  0.380  0.000  1.0
  Ni  Ni28  1  0.620  0.949  0.000  1.0
  Ni  Ni29  1  0.602  0.205  0.000  1.0
  Ni  Ni30  1  0.333  0.667  0.000  1.0
  Ni  Ni31  1  0.553  0.277  0.500  1.0
  Ni  Ni32  1  0.454  0.377  0.500  1.0
  Ni  Ni33  1  0.000  0.000  0.500  1.0
  Ni  Ni34  1  0.904  0.807  0.500  1.0
  P  P35  1  0.241  0.759  0.000  1.0
  P  P36  1  0.515  0.485  0.000  1.0
  P  P37  1  0.970  0.485  0.000  1.0
  P  P38  1  0.003  0.277  0.500  1.0
  P  P39  1  0.241  0.481  0.000  1.0
  P  P40  1  0.515  0.030  0.000  1.0
  P  P41  1  0.003  0.725  0.500  1.0
  P  P42  1  0.275  0.997  0.500  1.0
  P  P43  1  0.519  0.759  0.000  1.0
  P  P44  1  0.723  0.725  0.500  1.0
  P  P45  1  0.723  0.997  0.500  1.0
  P  P46  1  0.275  0.277  0.500  1.0
[/CIF]
.