The material structure described by Ho5Ni19P12 crystallizes in the hexagonal P-62m space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 16-coordinate geometry to two equivalent Ni(1), two equivalent Ni(3), two equivalent Ni(5), four equivalent Ni(2), two equivalent P(3), and four equivalent P(2) atoms. In the second Ho site, Ho(2) is bonded in a 15-coordinate geometry to three equivalent Ni(2), six equivalent Ni(3), and six equivalent P(1) atoms. There are five inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent Ho(1), two equivalent P(1), and two equivalent P(2) atoms to form distorted NiHo2P4 tetrahedra that share corners with four equivalent Ni(1)Ho2P4 tetrahedra, corners with four equivalent Ni(2)Ho3P4 tetrahedra, corners with four equivalent Ni(3)Ho3P4 tetrahedra, edges with two equivalent Ni(3)Ho3P4 tetrahedra, and faces with four equivalent Ni(2)Ho3P4 tetrahedra. In the second Ni site, Ni(2) is bonded to one Ho(2), two equivalent Ho(1), one P(2), one P(3), and two equivalent P(1) atoms to form distorted NiHo3P4 tetrahedra that share corners with two equivalent Ni(1)Ho2P4 tetrahedra, corners with two equivalent Ni(3)Ho3P4 tetrahedra, corners with five equivalent Ni(2)Ho3P4 tetrahedra, edges with two equivalent Ni(2)Ho3P4 tetrahedra, edges with four equivalent Ni(3)Ho3P4 tetrahedra,  a faceface with one Ni(2)Ho3P4 tetrahedra, faces with two equivalent Ni(1)Ho2P4 tetrahedra, and faces with two equivalent Ni(3)Ho3P4 tetrahedra. In the third Ni site, Ni(3) is bonded to one Ho(1), two equivalent Ho(2), two equivalent P(1), and two equivalent P(3) atoms to form distorted NiHo3P4 tetrahedra that share corners with two equivalent Ni(1)Ho2P4 tetrahedra, corners with two equivalent Ni(2)Ho3P4 tetrahedra, corners with six equivalent Ni(3)Ho3P4 tetrahedra,  an edgeedge with one Ni(1)Ho2P4 tetrahedra, edges with two equivalent Ni(3)Ho3P4 tetrahedra, edges with four equivalent Ni(2)Ho3P4 tetrahedra, faces with two equivalent Ni(2)Ho3P4 tetrahedra, and faces with three equivalent Ni(3)Ho3P4 tetrahedra. In the fourth Ni site, Ni(4) is bonded in a 1-coordinate geometry to one P(3) and four equivalent P(1) atoms. In the fifth Ni site, Ni(5) is bonded in a distorted trigonal planar geometry to six equivalent Ho(1) and three equivalent P(2) atoms. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to two equivalent Ho(2), one Ni(1), two equivalent Ni(2), two equivalent Ni(3), and two equivalent Ni(4) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to four equivalent Ho(1), one Ni(5), two equivalent Ni(1), and two equivalent Ni(2) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Ni(4), two equivalent Ni(2), and four equivalent Ni(3) atoms. is represented by the CIF card [CIF]
data_Ho5Ni19P12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.051
_cell_length_b   12.051
_cell_length_c   3.730
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   469.121
_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
  Ho  Ho0  1  0.000  0.812  0.500  1.0
  Ho  Ho1  1  0.188  0.188  0.500  1.0
  Ho  Ho2  1  0.812  0.000  0.500  1.0
  Ho  Ho3  1  0.667  0.333  0.000  1.0
  Ho  Ho4  1  0.333  0.667  0.000  1.0
  Ni  Ni5  1  0.000  0.285  0.500  1.0
  Ni  Ni6  1  0.380  0.183  0.000  1.0
  Ni  Ni7  1  0.803  0.620  0.000  1.0
  Ni  Ni8  1  0.817  0.197  0.000  1.0
  Ni  Ni9  1  0.183  0.380  0.000  1.0
  Ni  Ni10  1  0.197  0.817  0.000  1.0
  Ni  Ni11  1  0.875  0.515  0.500  1.0
  Ni  Ni12  1  0.640  0.125  0.500  1.0
  Ni  Ni13  1  0.485  0.360  0.500  1.0
  Ni  Ni14  1  0.360  0.485  0.500  1.0
  Ni  Ni15  1  0.125  0.640  0.500  1.0
  Ni  Ni16  1  0.515  0.875  0.500  1.0
  Ni  Ni17  1  0.285  0.000  0.500  1.0
  Ni  Ni18  1  0.000  0.447  0.000  1.0
  Ni  Ni19  1  0.553  0.553  0.000  1.0
  Ni  Ni20  1  0.447  0.000  0.000  1.0
  Ni  Ni21  1  0.000  0.000  0.000  1.0
  Ni  Ni22  1  0.620  0.803  0.000  1.0
  Ni  Ni23  1  0.715  0.715  0.500  1.0
  P  P24  1  0.687  0.521  0.500  1.0
  P  P25  1  0.479  0.167  0.500  1.0
  P  P26  1  0.833  0.313  0.500  1.0
  P  P27  1  0.313  0.833  0.500  1.0
  P  P28  1  0.167  0.479  0.500  1.0
  P  P29  1  0.822  0.822  0.000  1.0
  P  P30  1  0.178  0.000  0.000  1.0
  P  P31  1  0.000  0.633  0.000  1.0
  P  P32  1  0.367  0.367  0.000  1.0
  P  P33  1  0.633  0.000  0.000  1.0
  P  P34  1  0.521  0.687  0.500  1.0
  P  P35  1  0.000  0.178  0.000  1.0
[/CIF]
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The material structure described by Ho5Ni19P12 crystallizes in the hexagonal P-62m space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 16-coordinate geometry to two equivalent Ni(1), two equivalent Ni(3), two equivalent Ni(5), four equivalent Ni(2), two equivalent P(3), and four equivalent P(2) atoms. In the second Ho site, Ho(2) is bonded in a 15-coordinate geometry to three equivalent Ni(2), six equivalent Ni(3), and six equivalent P(1) atoms. There are five inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent Ho(1), two equivalent P(1), and two equivalent P(2) atoms to form distorted NiHo2P4 tetrahedra that share corners with four equivalent Ni(1)Ho2P4 tetrahedra, corners with four equivalent Ni(2)Ho3P4 tetrahedra, corners with four equivalent Ni(3)Ho3P4 tetrahedra, edges with two equivalent Ni(3)Ho3P4 tetrahedra, and faces with four equivalent Ni(2)Ho3P4 tetrahedra. In the second Ni site, Ni(2) is bonded to one Ho(2), two equivalent Ho(1), one P(2), one P(3), and two equivalent P(1) atoms to form distorted NiHo3P4 tetrahedra that share corners with two equivalent Ni(1)Ho2P4 tetrahedra, corners with two equivalent Ni(3)Ho3P4 tetrahedra, corners with five equivalent Ni(2)Ho3P4 tetrahedra, edges with two equivalent Ni(2)Ho3P4 tetrahedra, edges with four equivalent Ni(3)Ho3P4 tetrahedra,  a faceface with one Ni(2)Ho3P4 tetrahedra, faces with two equivalent Ni(1)Ho2P4 tetrahedra, and faces with two equivalent Ni(3)Ho3P4 tetrahedra. In the third Ni site, Ni(3) is bonded to one Ho(1), two equivalent Ho(2), two equivalent P(1), and two equivalent P(3) atoms to form distorted NiHo3P4 tetrahedra that share corners with two equivalent Ni(1)Ho2P4 tetrahedra, corners with two equivalent Ni(2)Ho3P4 tetrahedra, corners with six equivalent Ni(3)Ho3P4 tetrahedra,  an edgeedge with one Ni(1)Ho2P4 tetrahedra, edges with two equivalent Ni(3)Ho3P4 tetrahedra, edges with four equivalent Ni(2)Ho3P4 tetrahedra, faces with two equivalent Ni(2)Ho3P4 tetrahedra, and faces with three equivalent Ni(3)Ho3P4 tetrahedra. In the fourth Ni site, Ni(4) is bonded in a 1-coordinate geometry to one P(3) and four equivalent P(1) atoms. In the fifth Ni site, Ni(5) is bonded in a distorted trigonal planar geometry to six equivalent Ho(1) and three equivalent P(2) atoms. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to two equivalent Ho(2), one Ni(1), two equivalent Ni(2), two equivalent Ni(3), and two equivalent Ni(4) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to four equivalent Ho(1), one Ni(5), two equivalent Ni(1), and two equivalent Ni(2) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Ni(4), two equivalent Ni(2), and four equivalent Ni(3) atoms. is represented by the CIF card [CIF]
data_Ho5Ni19P12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.051
_cell_length_b   12.051
_cell_length_c   3.730
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   469.121
_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
  Ho  Ho0  1  0.000  0.812  0.500  1.0
  Ho  Ho1  1  0.188  0.188  0.500  1.0
  Ho  Ho2  1  0.812  0.000  0.500  1.0
  Ho  Ho3  1  0.667  0.333  0.000  1.0
  Ho  Ho4  1  0.333  0.667  0.000  1.0
  Ni  Ni5  1  0.000  0.285  0.500  1.0
  Ni  Ni6  1  0.380  0.183  0.000  1.0
  Ni  Ni7  1  0.803  0.620  0.000  1.0
  Ni  Ni8  1  0.817  0.197  0.000  1.0
  Ni  Ni9  1  0.183  0.380  0.000  1.0
  Ni  Ni10  1  0.197  0.817  0.000  1.0
  Ni  Ni11  1  0.875  0.515  0.500  1.0
  Ni  Ni12  1  0.640  0.125  0.500  1.0
  Ni  Ni13  1  0.485  0.360  0.500  1.0
  Ni  Ni14  1  0.360  0.485  0.500  1.0
  Ni  Ni15  1  0.125  0.640  0.500  1.0
  Ni  Ni16  1  0.515  0.875  0.500  1.0
  Ni  Ni17  1  0.285  0.000  0.500  1.0
  Ni  Ni18  1  0.000  0.447  0.000  1.0
  Ni  Ni19  1  0.553  0.553  0.000  1.0
  Ni  Ni20  1  0.447  0.000  0.000  1.0
  Ni  Ni21  1  0.000  0.000  0.000  1.0
  Ni  Ni22  1  0.620  0.803  0.000  1.0
  Ni  Ni23  1  0.715  0.715  0.500  1.0
  P  P24  1  0.687  0.521  0.500  1.0
  P  P25  1  0.479  0.167  0.500  1.0
  P  P26  1  0.833  0.313  0.500  1.0
  P  P27  1  0.313  0.833  0.500  1.0
  P  P28  1  0.167  0.479  0.500  1.0
  P  P29  1  0.822  0.822  0.000  1.0
  P  P30  1  0.178  0.000  0.000  1.0
  P  P31  1  0.000  0.633  0.000  1.0
  P  P32  1  0.367  0.367  0.000  1.0
  P  P33  1  0.633  0.000  0.000  1.0
  P  P34  1  0.521  0.687  0.500  1.0
  P  P35  1  0.000  0.178  0.000  1.0
[/CIF]
.