The material described by Ho2RhSi3 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 twelve equivalent Si(1) atoms to form HoSi12 cuboctahedra that share edges with twelve equivalent Ho(2)Si8Rh4 cuboctahedra, faces with two equivalent Ho(1)Si12 cuboctahedra, and faces with six equivalent Ho(2)Si8Rh4 cuboctahedra. In the second Ho site, Ho(2) is bonded to four equivalent Rh(1) and eight equivalent Si(1) atoms to form HoSi8Rh4 cuboctahedra that share edges with four equivalent Ho(1)Si12 cuboctahedra, edges with eight equivalent Ho(2)Si8Rh4 cuboctahedra, faces with two equivalent Ho(1)Si12 cuboctahedra, and faces with six equivalent Ho(2)Si8Rh4 cuboctahedra. Rh(1) is bonded in a 9-coordinate geometry to six equivalent Ho(2) and three equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to two equivalent Ho(1), four equivalent Ho(2), one Rh(1), and two equivalent Si(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ho2Si3Rh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.114
_cell_length_b   8.114
_cell_length_c   7.860
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   448.163
_cell_formula_units_Z   4
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  0.000  0.250  1.0
  Ho  Ho1  1  0.000  1.000  0.750  1.0
  Ho  Ho2  1  0.508  0.492  0.250  1.0
  Ho  Ho3  1  0.508  0.016  0.250  1.0
  Ho  Ho4  1  0.984  0.492  0.250  1.0
  Ho  Ho5  1  0.492  0.508  0.750  1.0
  Ho  Ho6  1  0.492  0.984  0.750  1.0
  Ho  Ho7  1  0.016  0.508  0.750  1.0
  Si  Si8  1  0.167  0.833  0.500  1.0
  Si  Si9  1  0.167  0.334  0.500  1.0
  Si  Si10  1  0.666  0.833  0.500  1.0
  Si  Si11  1  0.833  0.167  0.500  1.0
  Si  Si12  1  0.833  0.666  0.500  1.0
  Si  Si13  1  0.334  0.167  0.500  1.0
  Si  Si14  1  0.833  0.167  1.000  1.0
  Si  Si15  1  0.833  0.666  1.000  1.0
  Si  Si16  1  0.334  0.167  1.000  1.0
  Si  Si17  1  0.167  0.833  0.000  1.0
  Si  Si18  1  0.167  0.334  0.000  1.0
  Si  Si19  1  0.666  0.833  0.000  1.0
  Rh  Rh20  1  0.333  0.667  0.469  1.0
  Rh  Rh21  1  0.667  0.333  0.531  1.0
  Rh  Rh22  1  0.667  0.333  0.969  1.0
  Rh  Rh23  1  0.333  0.667  0.031  1.0
[/CIF]
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The material described by Ho2RhSi3 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 twelve equivalent Si(1) atoms to form HoSi12 cuboctahedra that share edges with twelve equivalent Ho(2)Si8Rh4 cuboctahedra, faces with two equivalent Ho(1)Si12 cuboctahedra, and faces with six equivalent Ho(2)Si8Rh4 cuboctahedra. In the second Ho site, Ho(2) is bonded to four equivalent Rh(1) and eight equivalent Si(1) atoms to form HoSi8Rh4 cuboctahedra that share edges with four equivalent Ho(1)Si12 cuboctahedra, edges with eight equivalent Ho(2)Si8Rh4 cuboctahedra, faces with two equivalent Ho(1)Si12 cuboctahedra, and faces with six equivalent Ho(2)Si8Rh4 cuboctahedra. Rh(1) is bonded in a 9-coordinate geometry to six equivalent Ho(2) and three equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to two equivalent Ho(1), four equivalent Ho(2), one Rh(1), and two equivalent Si(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ho2Si3Rh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.114
_cell_length_b   8.114
_cell_length_c   7.860
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   448.163
_cell_formula_units_Z   4
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  0.000  0.250  1.0
  Ho  Ho1  1  0.000  1.000  0.750  1.0
  Ho  Ho2  1  0.508  0.492  0.250  1.0
  Ho  Ho3  1  0.508  0.016  0.250  1.0
  Ho  Ho4  1  0.984  0.492  0.250  1.0
  Ho  Ho5  1  0.492  0.508  0.750  1.0
  Ho  Ho6  1  0.492  0.984  0.750  1.0
  Ho  Ho7  1  0.016  0.508  0.750  1.0
  Si  Si8  1  0.167  0.833  0.500  1.0
  Si  Si9  1  0.167  0.334  0.500  1.0
  Si  Si10  1  0.666  0.833  0.500  1.0
  Si  Si11  1  0.833  0.167  0.500  1.0
  Si  Si12  1  0.833  0.666  0.500  1.0
  Si  Si13  1  0.334  0.167  0.500  1.0
  Si  Si14  1  0.833  0.167  1.000  1.0
  Si  Si15  1  0.833  0.666  1.000  1.0
  Si  Si16  1  0.334  0.167  1.000  1.0
  Si  Si17  1  0.167  0.833  0.000  1.0
  Si  Si18  1  0.167  0.334  0.000  1.0
  Si  Si19  1  0.666  0.833  0.000  1.0
  Rh  Rh20  1  0.333  0.667  0.469  1.0
  Rh  Rh21  1  0.667  0.333  0.531  1.0
  Rh  Rh22  1  0.667  0.333  0.969  1.0
  Rh  Rh23  1  0.333  0.667  0.031  1.0
[/CIF]
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