The material structure described by Tb2RhSi3 crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded to twelve equivalent Si(1) atoms to form TbSi12 cuboctahedra that share edges with twelve equivalent Tb(2)Si8Rh4 cuboctahedra, faces with two equivalent Tb(1)Si12 cuboctahedra, and faces with six equivalent Tb(2)Si8Rh4 cuboctahedra. In the second Tb site, Tb(2) is bonded to four equivalent Rh(1) and eight equivalent Si(1) atoms to form TbSi8Rh4 cuboctahedra that share edges with four equivalent Tb(1)Si12 cuboctahedra, edges with eight equivalent Tb(2)Si8Rh4 cuboctahedra, faces with two equivalent Tb(1)Si12 cuboctahedra, and faces with six equivalent Tb(2)Si8Rh4 cuboctahedra. Rh(1) is bonded in a 9-coordinate geometry to six equivalent Tb(2) and three equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to two equivalent Tb(1), four equivalent Tb(2), one Rh(1), and two equivalent Si(1) atoms. is represented by the CIF card [CIF]
data_Tb2Si3Rh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.988
_cell_length_b   8.175
_cell_length_c   8.175
_cell_angle_alpha   120.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   230.819
_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
  Rh  Rh0  1  0.000  0.333  0.667  1.0
  Rh  Rh1  1  0.000  0.667  0.333  1.0
  Si  Si2  1  0.000  0.166  0.332  1.0
  Si  Si3  1  0.000  0.166  0.834  1.0
  Si  Si4  1  0.000  0.668  0.834  1.0
  Si  Si5  1  0.000  0.834  0.668  1.0
  Si  Si6  1  0.000  0.332  0.166  1.0
  Si  Si7  1  0.000  0.834  0.166  1.0
  Tb  Tb8  1  0.500  0.000  0.000  1.0
  Tb  Tb9  1  0.500  0.500  0.000  1.0
  Tb  Tb10  1  0.500  0.500  0.500  1.0
  Tb  Tb11  1  0.500  1.000  0.500  1.0
[/CIF]
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The material structure described by Tb2RhSi3 crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded to twelve equivalent Si(1) atoms to form TbSi12 cuboctahedra that share edges with twelve equivalent Tb(2)Si8Rh4 cuboctahedra, faces with two equivalent Tb(1)Si12 cuboctahedra, and faces with six equivalent Tb(2)Si8Rh4 cuboctahedra. In the second Tb site, Tb(2) is bonded to four equivalent Rh(1) and eight equivalent Si(1) atoms to form TbSi8Rh4 cuboctahedra that share edges with four equivalent Tb(1)Si12 cuboctahedra, edges with eight equivalent Tb(2)Si8Rh4 cuboctahedra, faces with two equivalent Tb(1)Si12 cuboctahedra, and faces with six equivalent Tb(2)Si8Rh4 cuboctahedra. Rh(1) is bonded in a 9-coordinate geometry to six equivalent Tb(2) and three equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to two equivalent Tb(1), four equivalent Tb(2), one Rh(1), and two equivalent Si(1) atoms. is represented by the CIF card [CIF]
data_Tb2Si3Rh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.988
_cell_length_b   8.175
_cell_length_c   8.175
_cell_angle_alpha   120.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   230.819
_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
  Rh  Rh0  1  0.000  0.333  0.667  1.0
  Rh  Rh1  1  0.000  0.667  0.333  1.0
  Si  Si2  1  0.000  0.166  0.332  1.0
  Si  Si3  1  0.000  0.166  0.834  1.0
  Si  Si4  1  0.000  0.668  0.834  1.0
  Si  Si5  1  0.000  0.834  0.668  1.0
  Si  Si6  1  0.000  0.332  0.166  1.0
  Si  Si7  1  0.000  0.834  0.166  1.0
  Tb  Tb8  1  0.500  0.000  0.000  1.0
  Tb  Tb9  1  0.500  0.500  0.000  1.0
  Tb  Tb10  1  0.500  0.500  0.500  1.0
  Tb  Tb11  1  0.500  1.000  0.500  1.0
[/CIF]
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