The structure described by Ho3Pm is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded to eight equivalent Ho(1) and four equivalent Pm(1) atoms to form HoPm4Ho8 cuboctahedra that share corners with four equivalent Pm(1)Ho12 cuboctahedra; corners with fourteen Ho(1,1)Pm4Ho8 cuboctahedra; edges with six equivalent Pm(1)Ho12 cuboctahedra; edges with twelve equivalent Ho(1)Pm4Ho8 cuboctahedra; faces with four equivalent Pm(1)Ho12 cuboctahedra; and faces with sixteen Ho(1,1)Pm4Ho8 cuboctahedra. In the second Ho site, Ho(1) is bonded to eight Ho(1,1) and four equivalent Pm(1) atoms to form HoPm4Ho8 cuboctahedra that share corners with four equivalent Pm(1)Ho12 cuboctahedra; corners with fourteen Ho(1,1)Pm4Ho8 cuboctahedra; edges with six equivalent Pm(1)Ho12 cuboctahedra; edges with twelve Ho(1,1)Pm4Ho8 cuboctahedra; faces with four equivalent Pm(1)Ho12 cuboctahedra; and faces with sixteen Ho(1,1)Pm4Ho8 cuboctahedra. Pm(1) is bonded to twelve Ho(1,1) atoms to form PmHo12 cuboctahedra that share corners with six equivalent Pm(1)Ho12 cuboctahedra; corners with twelve Ho(1,1)Pm4Ho8 cuboctahedra; edges with eighteen Ho(1,1)Pm4Ho8 cuboctahedra; faces with eight equivalent Pm(1)Ho12 cuboctahedra; and faces with twelve Ho(1,1)Pm4Ho8 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_PmHo3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.301
_cell_length_b   7.301
_cell_length_c   5.616
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.998
_symmetry_Int_Tables_number   1
_cell_volume   259.264
_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
  Pm  Pm0  1  0.333  0.667  0.750  1.0
  Pm  Pm1  1  0.667  0.333  0.250  1.0
  Ho  Ho2  1  0.165  0.330  0.250  1.0
  Ho  Ho3  1  0.670  0.835  0.250  1.0
  Ho  Ho4  1  0.165  0.835  0.250  1.0
  Ho  Ho5  1  0.835  0.670  0.750  1.0
  Ho  Ho6  1  0.330  0.165  0.750  1.0
  Ho  Ho7  1  0.835  0.165  0.750  1.0
[/CIF]
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The structure described by Ho3Pm is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded to eight equivalent Ho(1) and four equivalent Pm(1) atoms to form HoPm4Ho8 cuboctahedra that share corners with four equivalent Pm(1)Ho12 cuboctahedra; corners with fourteen Ho(1,1)Pm4Ho8 cuboctahedra; edges with six equivalent Pm(1)Ho12 cuboctahedra; edges with twelve equivalent Ho(1)Pm4Ho8 cuboctahedra; faces with four equivalent Pm(1)Ho12 cuboctahedra; and faces with sixteen Ho(1,1)Pm4Ho8 cuboctahedra. In the second Ho site, Ho(1) is bonded to eight Ho(1,1) and four equivalent Pm(1) atoms to form HoPm4Ho8 cuboctahedra that share corners with four equivalent Pm(1)Ho12 cuboctahedra; corners with fourteen Ho(1,1)Pm4Ho8 cuboctahedra; edges with six equivalent Pm(1)Ho12 cuboctahedra; edges with twelve Ho(1,1)Pm4Ho8 cuboctahedra; faces with four equivalent Pm(1)Ho12 cuboctahedra; and faces with sixteen Ho(1,1)Pm4Ho8 cuboctahedra. Pm(1) is bonded to twelve Ho(1,1) atoms to form PmHo12 cuboctahedra that share corners with six equivalent Pm(1)Ho12 cuboctahedra; corners with twelve Ho(1,1)Pm4Ho8 cuboctahedra; edges with eighteen Ho(1,1)Pm4Ho8 cuboctahedra; faces with eight equivalent Pm(1)Ho12 cuboctahedra; and faces with twelve Ho(1,1)Pm4Ho8 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_PmHo3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.301
_cell_length_b   7.301
_cell_length_c   5.616
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.998
_symmetry_Int_Tables_number   1
_cell_volume   259.264
_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
  Pm  Pm0  1  0.333  0.667  0.750  1.0
  Pm  Pm1  1  0.667  0.333  0.250  1.0
  Ho  Ho2  1  0.165  0.330  0.250  1.0
  Ho  Ho3  1  0.670  0.835  0.250  1.0
  Ho  Ho4  1  0.165  0.835  0.250  1.0
  Ho  Ho5  1  0.835  0.670  0.750  1.0
  Ho  Ho6  1  0.330  0.165  0.750  1.0
  Ho  Ho7  1  0.835  0.165  0.750  1.0
[/CIF]
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