The compound described by Yb9Ni26P12 crystallizes in the hexagonal P-6m2 space group. There are three inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 16-coordinate geometry to two equivalent Ni(2), two equivalent Ni(3), two equivalent Ni(4), two equivalent Ni(5), four equivalent Ni(6), and four equivalent P(2) atoms. In the second Yb site, Yb(2) is bonded in a 14-coordinate geometry to two equivalent Ni(1), two equivalent Ni(5), two equivalent Ni(8), four equivalent Ni(4), and four equivalent P(2) atoms. In the third Yb site, Yb(3) is bonded in a 16-coordinate geometry to two equivalent Ni(1), two equivalent Ni(6), two equivalent Ni(7), four equivalent Ni(5), two equivalent P(1), and four equivalent P(3) atoms. There are eight inequivalent Ni sites. In the first Ni site, Ni(7) is bonded in a 9-coordinate geometry to six equivalent Yb(3) and three equivalent P(3) atoms. In the second Ni site, Ni(8) is bonded in a 9-coordinate geometry to six equivalent Yb(2) and three equivalent Ni(4) atoms. In the third Ni site, Ni(1) is bonded to two equivalent Yb(2), two equivalent Yb(3), two equivalent P(2), and two equivalent P(3) atoms to form a mixture of distorted corner, edge, and face-sharing NiYb4P4 tetrahedra. In the fourth Ni site, Ni(2) is bonded in a distorted single-bond geometry to two equivalent Yb(1), four equivalent Ni(3), and one P(1) atom. In the fifth Ni site, Ni(3) is bonded in a 10-coordinate geometry to two equivalent Yb(1), two equivalent Ni(3), two equivalent Ni(6), and four equivalent Ni(2) atoms. In the sixth Ni site, Ni(4) is bonded in a 9-coordinate geometry to two equivalent Yb(1), four equivalent Yb(2), one Ni(8), and two equivalent P(2) atoms. In the seventh Ni site, Ni(5) is bonded to one Yb(1), one Yb(2), two equivalent Yb(3), one P(1), one P(3), and two equivalent P(2) atoms to form a mixture of distorted corner, edge, and face-sharing NiYb4P4 tetrahedra. In the eighth Ni site, Ni(6) is bonded in a 3-coordinate geometry to one Yb(3), two equivalent Yb(1), one Ni(3), one P(2), and two 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 two equivalent Yb(3), one Ni(2), two equivalent Ni(5), and four equivalent Ni(6) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Yb(1), two equivalent Yb(2), one Ni(1), one Ni(4), one Ni(6), and two equivalent Ni(5) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to four equivalent Yb(3), one Ni(7), two equivalent Ni(1), and two equivalent Ni(5) atoms. is represented by the CIF card [CIF]
data_Yb9(Ni13P6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.754
_cell_length_b   14.024
_cell_length_c   14.024
_cell_angle_alpha   120.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   639.434
_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
  Yb  Yb0  1  0.500  0.810  0.620  1.0
  Yb  Yb1  1  0.500  0.810  0.190  1.0
  Yb  Yb2  1  0.500  0.380  0.190  1.0
  Yb  Yb3  1  0.500  0.089  0.178  1.0
  Yb  Yb4  1  0.500  0.089  0.911  1.0
  Yb  Yb5  1  0.500  0.822  0.911  1.0
  Yb  Yb6  1  0.000  0.425  0.850  1.0
  Yb  Yb7  1  0.000  0.425  0.575  1.0
  Yb  Yb8  1  0.000  0.150  0.575  1.0
  Ni  Ni9  1  0.000  0.191  0.382  1.0
  Ni  Ni10  1  0.000  0.191  0.809  1.0
  Ni  Ni11  1  0.000  0.618  0.809  1.0
  Ni  Ni12  1  0.500  0.601  0.202  1.0
  Ni  Ni13  1  0.500  0.601  0.399  1.0
  Ni  Ni14  1  0.500  0.798  0.399  1.0
  Ni  Ni15  1  0.000  0.723  0.446  1.0
  Ni  Ni16  1  0.000  0.723  0.277  1.0
  Ni  Ni17  1  0.000  0.554  0.277  1.0
  Ni  Ni18  1  0.000  0.907  0.813  1.0
  Ni  Ni19  1  0.000  0.907  0.093  1.0
  Ni  Ni20  1  0.000  0.187  0.093  1.0
  Ni  Ni21  1  0.500  0.622  0.676  1.0
  Ni  Ni22  1  0.500  0.054  0.378  1.0
  Ni  Ni23  1  0.500  0.054  0.676  1.0
  Ni  Ni24  1  0.500  0.324  0.946  1.0
  Ni  Ni25  1  0.500  0.324  0.378  1.0
  Ni  Ni26  1  0.500  0.622  0.946  1.0
  Ni  Ni27  1  0.000  0.925  0.376  1.0
  Ni  Ni28  1  0.000  0.451  0.075  1.0
  Ni  Ni29  1  0.000  0.451  0.376  1.0
  Ni  Ni30  1  0.000  0.624  0.549  1.0
  Ni  Ni31  1  0.000  0.624  0.075  1.0
  Ni  Ni32  1  0.000  0.925  0.549  1.0
  Ni  Ni33  1  0.500  0.333  0.667  1.0
  Ni  Ni34  1  0.000  0.000  0.000  1.0
  P  P35  1  0.500  0.513  0.026  1.0
  P  P36  1  0.500  0.513  0.487  1.0
  P  P37  1  0.500  0.974  0.487  1.0
  P  P38  1  0.000  0.002  0.275  1.0
  P  P39  1  0.000  0.273  0.998  1.0
  P  P40  1  0.000  0.273  0.275  1.0
  P  P41  1  0.000  0.725  0.727  1.0
  P  P42  1  0.000  0.725  0.998  1.0
  P  P43  1  0.000  0.002  0.727  1.0
  P  P44  1  0.500  0.242  0.484  1.0
  P  P45  1  0.500  0.242  0.758  1.0
  P  P46  1  0.500  0.516  0.758  1.0
[/CIF]
.
The compound described by Yb9Ni26P12 crystallizes in the hexagonal P-6m2 space group. There are three inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 16-coordinate geometry to two equivalent Ni(2), two equivalent Ni(3), two equivalent Ni(4), two equivalent Ni(5), four equivalent Ni(6), and four equivalent P(2) atoms. In the second Yb site, Yb(2) is bonded in a 14-coordinate geometry to two equivalent Ni(1), two equivalent Ni(5), two equivalent Ni(8), four equivalent Ni(4), and four equivalent P(2) atoms. In the third Yb site, Yb(3) is bonded in a 16-coordinate geometry to two equivalent Ni(1), two equivalent Ni(6), two equivalent Ni(7), four equivalent Ni(5), two equivalent P(1), and four equivalent P(3) atoms. There are eight inequivalent Ni sites. In the first Ni site, Ni(7) is bonded in a 9-coordinate geometry to six equivalent Yb(3) and three equivalent P(3) atoms. In the second Ni site, Ni(8) is bonded in a 9-coordinate geometry to six equivalent Yb(2) and three equivalent Ni(4) atoms. In the third Ni site, Ni(1) is bonded to two equivalent Yb(2), two equivalent Yb(3), two equivalent P(2), and two equivalent P(3) atoms to form a mixture of distorted corner, edge, and face-sharing NiYb4P4 tetrahedra. In the fourth Ni site, Ni(2) is bonded in a distorted single-bond geometry to two equivalent Yb(1), four equivalent Ni(3), and one P(1) atom. In the fifth Ni site, Ni(3) is bonded in a 10-coordinate geometry to two equivalent Yb(1), two equivalent Ni(3), two equivalent Ni(6), and four equivalent Ni(2) atoms. In the sixth Ni site, Ni(4) is bonded in a 9-coordinate geometry to two equivalent Yb(1), four equivalent Yb(2), one Ni(8), and two equivalent P(2) atoms. In the seventh Ni site, Ni(5) is bonded to one Yb(1), one Yb(2), two equivalent Yb(3), one P(1), one P(3), and two equivalent P(2) atoms to form a mixture of distorted corner, edge, and face-sharing NiYb4P4 tetrahedra. In the eighth Ni site, Ni(6) is bonded in a 3-coordinate geometry to one Yb(3), two equivalent Yb(1), one Ni(3), one P(2), and two 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 two equivalent Yb(3), one Ni(2), two equivalent Ni(5), and four equivalent Ni(6) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Yb(1), two equivalent Yb(2), one Ni(1), one Ni(4), one Ni(6), and two equivalent Ni(5) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to four equivalent Yb(3), one Ni(7), two equivalent Ni(1), and two equivalent Ni(5) atoms. is represented by the CIF card [CIF]
data_Yb9(Ni13P6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.754
_cell_length_b   14.024
_cell_length_c   14.024
_cell_angle_alpha   120.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   639.434
_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
  Yb  Yb0  1  0.500  0.810  0.620  1.0
  Yb  Yb1  1  0.500  0.810  0.190  1.0
  Yb  Yb2  1  0.500  0.380  0.190  1.0
  Yb  Yb3  1  0.500  0.089  0.178  1.0
  Yb  Yb4  1  0.500  0.089  0.911  1.0
  Yb  Yb5  1  0.500  0.822  0.911  1.0
  Yb  Yb6  1  0.000  0.425  0.850  1.0
  Yb  Yb7  1  0.000  0.425  0.575  1.0
  Yb  Yb8  1  0.000  0.150  0.575  1.0
  Ni  Ni9  1  0.000  0.191  0.382  1.0
  Ni  Ni10  1  0.000  0.191  0.809  1.0
  Ni  Ni11  1  0.000  0.618  0.809  1.0
  Ni  Ni12  1  0.500  0.601  0.202  1.0
  Ni  Ni13  1  0.500  0.601  0.399  1.0
  Ni  Ni14  1  0.500  0.798  0.399  1.0
  Ni  Ni15  1  0.000  0.723  0.446  1.0
  Ni  Ni16  1  0.000  0.723  0.277  1.0
  Ni  Ni17  1  0.000  0.554  0.277  1.0
  Ni  Ni18  1  0.000  0.907  0.813  1.0
  Ni  Ni19  1  0.000  0.907  0.093  1.0
  Ni  Ni20  1  0.000  0.187  0.093  1.0
  Ni  Ni21  1  0.500  0.622  0.676  1.0
  Ni  Ni22  1  0.500  0.054  0.378  1.0
  Ni  Ni23  1  0.500  0.054  0.676  1.0
  Ni  Ni24  1  0.500  0.324  0.946  1.0
  Ni  Ni25  1  0.500  0.324  0.378  1.0
  Ni  Ni26  1  0.500  0.622  0.946  1.0
  Ni  Ni27  1  0.000  0.925  0.376  1.0
  Ni  Ni28  1  0.000  0.451  0.075  1.0
  Ni  Ni29  1  0.000  0.451  0.376  1.0
  Ni  Ni30  1  0.000  0.624  0.549  1.0
  Ni  Ni31  1  0.000  0.624  0.075  1.0
  Ni  Ni32  1  0.000  0.925  0.549  1.0
  Ni  Ni33  1  0.500  0.333  0.667  1.0
  Ni  Ni34  1  0.000  0.000  0.000  1.0
  P  P35  1  0.500  0.513  0.026  1.0
  P  P36  1  0.500  0.513  0.487  1.0
  P  P37  1  0.500  0.974  0.487  1.0
  P  P38  1  0.000  0.002  0.275  1.0
  P  P39  1  0.000  0.273  0.998  1.0
  P  P40  1  0.000  0.273  0.275  1.0
  P  P41  1  0.000  0.725  0.727  1.0
  P  P42  1  0.000  0.725  0.998  1.0
  P  P43  1  0.000  0.002  0.727  1.0
  P  P44  1  0.500  0.242  0.484  1.0
  P  P45  1  0.500  0.242  0.758  1.0
  P  P46  1  0.500  0.516  0.758  1.0
[/CIF]
.