The compound described by Y6Ni20P13 crystallizes in the hexagonal P-6 space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 16-coordinate geometry to one Ni(3), one Ni(7), two equivalent Ni(2), two equivalent Ni(5), two equivalent Ni(6), two equivalent Ni(8), two equivalent P(2), and four equivalent P(4) atoms. In the second Y site, Y(2) is bonded in a 15-coordinate geometry to one Ni(8), two equivalent Ni(1), two equivalent Ni(5), two equivalent Ni(6), two equivalent Ni(7), two equivalent P(1), and four equivalent P(3) atoms. There are eight inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a distorted trigonal planar geometry to six equivalent Y(2) and three equivalent P(3) atoms. In the second Ni site, Ni(2) is bonded in a distorted trigonal planar geometry to six equivalent Y(1) and three equivalent P(4) atoms. In the third Ni site, Ni(3) is bonded to one Y(1), one P(1), one P(5), and two equivalent P(2) atoms to form distorted NiYP4 tetrahedra that share  a cornercorner with one Ni(5)Y4P4 tetrahedra, corners with four equivalent Ni(3)YP4 tetrahedra,  an edgeedge with one Ni(5)Y4P4 tetrahedra, edges with two equivalent Ni(6)Y4P4 tetrahedra, and faces with two equivalent Ni(8)Y3P4 tetrahedra. In the fourth Ni site, Ni(4) is bonded in a 5-coordinate geometry to one P(2), two equivalent P(1), and two equivalent P(5) atoms. In the fifth Ni site, Ni(5) is bonded to two equivalent Y(1), two equivalent Y(2), one P(1), one P(3), and two equivalent P(4) atoms to form distorted NiY4P4 tetrahedra that share  a cornercorner with one Ni(3)YP4 tetrahedra, corners with two equivalent Ni(8)Y3P4 tetrahedra, corners with two equivalent Ni(5)Y4P4 tetrahedra, corners with four equivalent Ni(6)Y4P4 tetrahedra,  an edgeedge with one Ni(3)YP4 tetrahedra, edges with two equivalent Ni(5)Y4P4 tetrahedra, faces with two equivalent Ni(8)Y3P4 tetrahedra, and faces with two equivalent Ni(6)Y4P4 tetrahedra. In the sixth Ni site, Ni(6) is bonded to two equivalent Y(1), two equivalent Y(2), one P(2), one P(4), and two equivalent P(3) atoms to form distorted NiY4P4 tetrahedra that share corners with two equivalent Ni(6)Y4P4 tetrahedra, corners with three equivalent Ni(8)Y3P4 tetrahedra, corners with four equivalent Ni(5)Y4P4 tetrahedra,  an edgeedge with one Ni(8)Y3P4 tetrahedra, edges with two equivalent Ni(6)Y4P4 tetrahedra, edges with two equivalent Ni(3)YP4 tetrahedra,  a faceface with one Ni(8)Y3P4 tetrahedra, and faces with two equivalent Ni(5)Y4P4 tetrahedra. In the seventh Ni site, Ni(7) is bonded in a 4-coordinate geometry to one Y(1), two equivalent Y(2), one P(1), one P(3), and two equivalent P(2) atoms. In the eighth Ni site, Ni(8) is bonded to one Y(2), two equivalent Y(1), one P(2), one P(4), and two equivalent P(1) atoms to form distorted NiY3P4 tetrahedra that share corners with two equivalent Ni(5)Y4P4 tetrahedra, corners with three equivalent Ni(6)Y4P4 tetrahedra,  an edgeedge with one Ni(6)Y4P4 tetrahedra, edges with two equivalent Ni(8)Y3P4 tetrahedra,  a faceface with one Ni(6)Y4P4 tetrahedra, faces with two equivalent Ni(5)Y4P4 tetrahedra, and faces with two equivalent Ni(3)YP4 tetrahedra. There are five inequivalent P sites. In the first P site, P(3) is bonded in a 9-coordinate geometry to four equivalent Y(2), one Ni(1), one Ni(5), one Ni(7), and two equivalent Ni(6) atoms. In the second P site, P(4) is bonded in a 9-coordinate geometry to four equivalent Y(1), one Ni(2), one Ni(6), one Ni(8), and two equivalent Ni(5) atoms. In the third P site, P(5) is bonded in a 9-coordinate geometry to three equivalent Ni(3) and six equivalent Ni(4) atoms. In the fourth P site, P(1) is bonded in a 9-coordinate geometry to two equivalent Y(2), one Ni(3), one Ni(5), one Ni(7), two equivalent Ni(4), and two equivalent Ni(8) atoms. In the fifth P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Y(1), one Ni(4), one Ni(6), one Ni(8), two equivalent Ni(3), and two equivalent Ni(7) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Y6Ni20P13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.648
_cell_length_b   12.648
_cell_length_c   3.755
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   520.147
_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
  Y  Y0  1  0.470  0.188  0.000  1.0
  Y  Y1  1  0.718  0.530  0.000  1.0
  Y  Y2  1  0.812  0.282  0.000  1.0
  Y  Y3  1  0.531  0.812  0.500  1.0
  Y  Y4  1  0.282  0.469  0.500  1.0
  Y  Y5  1  0.188  0.718  0.500  1.0
  Ni  Ni6  1  0.333  0.667  0.000  1.0
  Ni  Ni7  1  0.667  0.333  0.500  1.0
  Ni  Ni8  1  0.196  0.091  0.000  1.0
  Ni  Ni9  1  0.895  0.804  0.000  1.0
  Ni  Ni10  1  0.909  0.105  0.000  1.0
  Ni  Ni11  1  0.848  0.928  0.500  1.0
  Ni  Ni12  1  0.079  0.152  0.500  1.0
  Ni  Ni13  1  0.072  0.921  0.500  1.0
  Ni  Ni14  1  0.438  0.416  0.000  1.0
  Ni  Ni15  1  0.979  0.562  0.000  1.0
  Ni  Ni16  1  0.584  0.021  0.000  1.0
  Ni  Ni17  1  0.565  0.587  0.500  1.0
  Ni  Ni18  1  0.022  0.435  0.500  1.0
  Ni  Ni19  1  0.413  0.978  0.500  1.0
  Ni  Ni20  1  0.078  0.320  0.000  1.0
  Ni  Ni21  1  0.242  0.922  0.000  1.0
  Ni  Ni22  1  0.680  0.758  0.000  1.0
  Ni  Ni23  1  0.929  0.683  0.500  1.0
  Ni  Ni24  1  0.754  0.071  0.500  1.0
  Ni  Ni25  1  0.317  0.246  0.500  1.0
  P  P26  1  0.234  0.282  0.000  1.0
  P  P27  1  0.048  0.766  0.000  1.0
  P  P28  1  0.718  0.952  0.000  1.0
  P  P29  1  0.767  0.721  0.500  1.0
  P  P30  1  0.954  0.233  0.500  1.0
  P  P31  1  0.279  0.046  0.500  1.0
  P  P32  1  0.477  0.614  0.000  1.0
  P  P33  1  0.138  0.523  0.000  1.0
  P  P34  1  0.386  0.862  0.000  1.0
  P  P35  1  0.523  0.387  0.500  1.0
  P  P36  1  0.863  0.477  0.500  1.0
  P  P37  1  0.613  0.137  0.500  1.0
  P  P38  1  0.000  0.000  0.000  1.0
[/CIF]
.
The compound described by Y6Ni20P13 crystallizes in the hexagonal P-6 space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 16-coordinate geometry to one Ni(3), one Ni(7), two equivalent Ni(2), two equivalent Ni(5), two equivalent Ni(6), two equivalent Ni(8), two equivalent P(2), and four equivalent P(4) atoms. In the second Y site, Y(2) is bonded in a 15-coordinate geometry to one Ni(8), two equivalent Ni(1), two equivalent Ni(5), two equivalent Ni(6), two equivalent Ni(7), two equivalent P(1), and four equivalent P(3) atoms. There are eight inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a distorted trigonal planar geometry to six equivalent Y(2) and three equivalent P(3) atoms. In the second Ni site, Ni(2) is bonded in a distorted trigonal planar geometry to six equivalent Y(1) and three equivalent P(4) atoms. In the third Ni site, Ni(3) is bonded to one Y(1), one P(1), one P(5), and two equivalent P(2) atoms to form distorted NiYP4 tetrahedra that share  a cornercorner with one Ni(5)Y4P4 tetrahedra, corners with four equivalent Ni(3)YP4 tetrahedra,  an edgeedge with one Ni(5)Y4P4 tetrahedra, edges with two equivalent Ni(6)Y4P4 tetrahedra, and faces with two equivalent Ni(8)Y3P4 tetrahedra. In the fourth Ni site, Ni(4) is bonded in a 5-coordinate geometry to one P(2), two equivalent P(1), and two equivalent P(5) atoms. In the fifth Ni site, Ni(5) is bonded to two equivalent Y(1), two equivalent Y(2), one P(1), one P(3), and two equivalent P(4) atoms to form distorted NiY4P4 tetrahedra that share  a cornercorner with one Ni(3)YP4 tetrahedra, corners with two equivalent Ni(8)Y3P4 tetrahedra, corners with two equivalent Ni(5)Y4P4 tetrahedra, corners with four equivalent Ni(6)Y4P4 tetrahedra,  an edgeedge with one Ni(3)YP4 tetrahedra, edges with two equivalent Ni(5)Y4P4 tetrahedra, faces with two equivalent Ni(8)Y3P4 tetrahedra, and faces with two equivalent Ni(6)Y4P4 tetrahedra. In the sixth Ni site, Ni(6) is bonded to two equivalent Y(1), two equivalent Y(2), one P(2), one P(4), and two equivalent P(3) atoms to form distorted NiY4P4 tetrahedra that share corners with two equivalent Ni(6)Y4P4 tetrahedra, corners with three equivalent Ni(8)Y3P4 tetrahedra, corners with four equivalent Ni(5)Y4P4 tetrahedra,  an edgeedge with one Ni(8)Y3P4 tetrahedra, edges with two equivalent Ni(6)Y4P4 tetrahedra, edges with two equivalent Ni(3)YP4 tetrahedra,  a faceface with one Ni(8)Y3P4 tetrahedra, and faces with two equivalent Ni(5)Y4P4 tetrahedra. In the seventh Ni site, Ni(7) is bonded in a 4-coordinate geometry to one Y(1), two equivalent Y(2), one P(1), one P(3), and two equivalent P(2) atoms. In the eighth Ni site, Ni(8) is bonded to one Y(2), two equivalent Y(1), one P(2), one P(4), and two equivalent P(1) atoms to form distorted NiY3P4 tetrahedra that share corners with two equivalent Ni(5)Y4P4 tetrahedra, corners with three equivalent Ni(6)Y4P4 tetrahedra,  an edgeedge with one Ni(6)Y4P4 tetrahedra, edges with two equivalent Ni(8)Y3P4 tetrahedra,  a faceface with one Ni(6)Y4P4 tetrahedra, faces with two equivalent Ni(5)Y4P4 tetrahedra, and faces with two equivalent Ni(3)YP4 tetrahedra. There are five inequivalent P sites. In the first P site, P(3) is bonded in a 9-coordinate geometry to four equivalent Y(2), one Ni(1), one Ni(5), one Ni(7), and two equivalent Ni(6) atoms. In the second P site, P(4) is bonded in a 9-coordinate geometry to four equivalent Y(1), one Ni(2), one Ni(6), one Ni(8), and two equivalent Ni(5) atoms. In the third P site, P(5) is bonded in a 9-coordinate geometry to three equivalent Ni(3) and six equivalent Ni(4) atoms. In the fourth P site, P(1) is bonded in a 9-coordinate geometry to two equivalent Y(2), one Ni(3), one Ni(5), one Ni(7), two equivalent Ni(4), and two equivalent Ni(8) atoms. In the fifth P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Y(1), one Ni(4), one Ni(6), one Ni(8), two equivalent Ni(3), and two equivalent Ni(7) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Y6Ni20P13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.648
_cell_length_b   12.648
_cell_length_c   3.755
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   520.147
_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
  Y  Y0  1  0.470  0.188  0.000  1.0
  Y  Y1  1  0.718  0.530  0.000  1.0
  Y  Y2  1  0.812  0.282  0.000  1.0
  Y  Y3  1  0.531  0.812  0.500  1.0
  Y  Y4  1  0.282  0.469  0.500  1.0
  Y  Y5  1  0.188  0.718  0.500  1.0
  Ni  Ni6  1  0.333  0.667  0.000  1.0
  Ni  Ni7  1  0.667  0.333  0.500  1.0
  Ni  Ni8  1  0.196  0.091  0.000  1.0
  Ni  Ni9  1  0.895  0.804  0.000  1.0
  Ni  Ni10  1  0.909  0.105  0.000  1.0
  Ni  Ni11  1  0.848  0.928  0.500  1.0
  Ni  Ni12  1  0.079  0.152  0.500  1.0
  Ni  Ni13  1  0.072  0.921  0.500  1.0
  Ni  Ni14  1  0.438  0.416  0.000  1.0
  Ni  Ni15  1  0.979  0.562  0.000  1.0
  Ni  Ni16  1  0.584  0.021  0.000  1.0
  Ni  Ni17  1  0.565  0.587  0.500  1.0
  Ni  Ni18  1  0.022  0.435  0.500  1.0
  Ni  Ni19  1  0.413  0.978  0.500  1.0
  Ni  Ni20  1  0.078  0.320  0.000  1.0
  Ni  Ni21  1  0.242  0.922  0.000  1.0
  Ni  Ni22  1  0.680  0.758  0.000  1.0
  Ni  Ni23  1  0.929  0.683  0.500  1.0
  Ni  Ni24  1  0.754  0.071  0.500  1.0
  Ni  Ni25  1  0.317  0.246  0.500  1.0
  P  P26  1  0.234  0.282  0.000  1.0
  P  P27  1  0.048  0.766  0.000  1.0
  P  P28  1  0.718  0.952  0.000  1.0
  P  P29  1  0.767  0.721  0.500  1.0
  P  P30  1  0.954  0.233  0.500  1.0
  P  P31  1  0.279  0.046  0.500  1.0
  P  P32  1  0.477  0.614  0.000  1.0
  P  P33  1  0.138  0.523  0.000  1.0
  P  P34  1  0.386  0.862  0.000  1.0
  P  P35  1  0.523  0.387  0.500  1.0
  P  P36  1  0.863  0.477  0.500  1.0
  P  P37  1  0.613  0.137  0.500  1.0
  P  P38  1  0.000  0.000  0.000  1.0
[/CIF]
.