The compound described by ErRh2Ge crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 9-coordinate geometry to one Er(2), nine equivalent Rh(1), and three equivalent Ge(3) atoms. In the second Er site, Er(2) is bonded in a 20-coordinate geometry to two equivalent Er(1), twelve equivalent Rh(1), three equivalent Ge(1), and three equivalent Ge(2) atoms. Rh(1) is bonded in a 12-coordinate geometry to two equivalent Er(2), three equivalent Er(1), four equivalent Rh(1), one Ge(1), one Ge(2), and one Ge(3) atom. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to three equivalent Er(2) and six equivalent Rh(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to three equivalent Er(2) and six equivalent Rh(1) atoms. In the third Ge site, Ge(3) is bonded to six equivalent Er(1) and six equivalent Rh(1) atoms to form distorted edge-sharing GeEr6Rh6 cuboctahedra. is represented by the CIF card [CIF]
data_ErGeRh2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.515
_cell_length_b   5.515
_cell_length_c   15.403
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   405.773
_cell_formula_units_Z   6
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
  Er  Er0  1  0.333  0.667  0.538  1.0
  Er  Er1  1  0.667  0.333  0.462  1.0
  Er  Er2  1  0.667  0.333  0.038  1.0
  Er  Er3  1  0.333  0.667  0.962  1.0
  Er  Er4  1  0.333  0.667  0.750  1.0
  Er  Er5  1  0.667  0.333  0.250  1.0
  Ge  Ge6  1  0.000  0.000  0.250  1.0
  Ge  Ge7  1  0.000  0.000  0.750  1.0
  Ge  Ge8  1  0.333  0.667  0.250  1.0
  Ge  Ge9  1  0.667  0.333  0.750  1.0
  Ge  Ge10  1  1.000  1.000  0.000  1.0
  Ge  Ge11  1  1.000  1.000  0.500  1.0
  Rh  Rh12  1  0.168  0.336  0.127  1.0
  Rh  Rh13  1  0.832  0.664  0.873  1.0
  Rh  Rh14  1  0.664  0.832  0.127  1.0
  Rh  Rh15  1  0.832  0.664  0.627  1.0
  Rh  Rh16  1  0.336  0.168  0.873  1.0
  Rh  Rh17  1  0.168  0.336  0.373  1.0
  Rh  Rh18  1  0.168  0.832  0.127  1.0
  Rh  Rh19  1  0.336  0.168  0.627  1.0
  Rh  Rh20  1  0.832  0.168  0.873  1.0
  Rh  Rh21  1  0.664  0.832  0.373  1.0
  Rh  Rh22  1  0.832  0.168  0.627  1.0
  Rh  Rh23  1  0.168  0.832  0.373  1.0
[/CIF]
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The compound described by ErRh2Ge crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 9-coordinate geometry to one Er(2), nine equivalent Rh(1), and three equivalent Ge(3) atoms. In the second Er site, Er(2) is bonded in a 20-coordinate geometry to two equivalent Er(1), twelve equivalent Rh(1), three equivalent Ge(1), and three equivalent Ge(2) atoms. Rh(1) is bonded in a 12-coordinate geometry to two equivalent Er(2), three equivalent Er(1), four equivalent Rh(1), one Ge(1), one Ge(2), and one Ge(3) atom. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to three equivalent Er(2) and six equivalent Rh(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to three equivalent Er(2) and six equivalent Rh(1) atoms. In the third Ge site, Ge(3) is bonded to six equivalent Er(1) and six equivalent Rh(1) atoms to form distorted edge-sharing GeEr6Rh6 cuboctahedra. is represented by the CIF card [CIF]
data_ErGeRh2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.515
_cell_length_b   5.515
_cell_length_c   15.403
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   405.773
_cell_formula_units_Z   6
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
  Er  Er0  1  0.333  0.667  0.538  1.0
  Er  Er1  1  0.667  0.333  0.462  1.0
  Er  Er2  1  0.667  0.333  0.038  1.0
  Er  Er3  1  0.333  0.667  0.962  1.0
  Er  Er4  1  0.333  0.667  0.750  1.0
  Er  Er5  1  0.667  0.333  0.250  1.0
  Ge  Ge6  1  0.000  0.000  0.250  1.0
  Ge  Ge7  1  0.000  0.000  0.750  1.0
  Ge  Ge8  1  0.333  0.667  0.250  1.0
  Ge  Ge9  1  0.667  0.333  0.750  1.0
  Ge  Ge10  1  1.000  1.000  0.000  1.0
  Ge  Ge11  1  1.000  1.000  0.500  1.0
  Rh  Rh12  1  0.168  0.336  0.127  1.0
  Rh  Rh13  1  0.832  0.664  0.873  1.0
  Rh  Rh14  1  0.664  0.832  0.127  1.0
  Rh  Rh15  1  0.832  0.664  0.627  1.0
  Rh  Rh16  1  0.336  0.168  0.873  1.0
  Rh  Rh17  1  0.168  0.336  0.373  1.0
  Rh  Rh18  1  0.168  0.832  0.127  1.0
  Rh  Rh19  1  0.336  0.168  0.627  1.0
  Rh  Rh20  1  0.832  0.168  0.873  1.0
  Rh  Rh21  1  0.664  0.832  0.373  1.0
  Rh  Rh22  1  0.832  0.168  0.627  1.0
  Rh  Rh23  1  0.168  0.832  0.373  1.0
[/CIF]
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