The compound described by Rb3Er is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Rb(1) is bonded to eight equivalent Rb(1) and four equivalent Er(1) atoms to form distorted RbRb8Er4 cuboctahedra that share corners with four equivalent Er(1)Rb12 cuboctahedra, corners with fourteen equivalent Rb(1)Rb8Er4 cuboctahedra, edges with six equivalent Er(1)Rb12 cuboctahedra, edges with twelve equivalent Rb(1)Rb8Er4 cuboctahedra, faces with four equivalent Er(1)Rb12 cuboctahedra, and faces with sixteen equivalent Rb(1)Rb8Er4 cuboctahedra. Er(1) is bonded to twelve equivalent Rb(1) atoms to form ErRb12 cuboctahedra that share corners with six equivalent Er(1)Rb12 cuboctahedra, corners with twelve equivalent Rb(1)Rb8Er4 cuboctahedra, edges with eighteen equivalent Rb(1)Rb8Er4 cuboctahedra, faces with eight equivalent Er(1)Rb12 cuboctahedra, and faces with twelve equivalent Rb(1)Rb8Er4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb3Er
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.095
_cell_length_b   9.095
_cell_length_c   7.399
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   530.095
_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
  Rb  Rb0  1  0.174  0.347  0.250  1.0
  Rb  Rb1  1  0.653  0.826  0.250  1.0
  Rb  Rb2  1  0.174  0.826  0.250  1.0
  Rb  Rb3  1  0.826  0.653  0.750  1.0
  Rb  Rb4  1  0.347  0.174  0.750  1.0
  Rb  Rb5  1  0.826  0.174  0.750  1.0
  Er  Er6  1  0.333  0.667  0.750  1.0
  Er  Er7  1  0.667  0.333  0.250  1.0
[/CIF]
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The compound described by Rb3Er is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Rb(1) is bonded to eight equivalent Rb(1) and four equivalent Er(1) atoms to form distorted RbRb8Er4 cuboctahedra that share corners with four equivalent Er(1)Rb12 cuboctahedra, corners with fourteen equivalent Rb(1)Rb8Er4 cuboctahedra, edges with six equivalent Er(1)Rb12 cuboctahedra, edges with twelve equivalent Rb(1)Rb8Er4 cuboctahedra, faces with four equivalent Er(1)Rb12 cuboctahedra, and faces with sixteen equivalent Rb(1)Rb8Er4 cuboctahedra. Er(1) is bonded to twelve equivalent Rb(1) atoms to form ErRb12 cuboctahedra that share corners with six equivalent Er(1)Rb12 cuboctahedra, corners with twelve equivalent Rb(1)Rb8Er4 cuboctahedra, edges with eighteen equivalent Rb(1)Rb8Er4 cuboctahedra, faces with eight equivalent Er(1)Rb12 cuboctahedra, and faces with twelve equivalent Rb(1)Rb8Er4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb3Er
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.095
_cell_length_b   9.095
_cell_length_c   7.399
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   530.095
_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
  Rb  Rb0  1  0.174  0.347  0.250  1.0
  Rb  Rb1  1  0.653  0.826  0.250  1.0
  Rb  Rb2  1  0.174  0.826  0.250  1.0
  Rb  Rb3  1  0.826  0.653  0.750  1.0
  Rb  Rb4  1  0.347  0.174  0.750  1.0
  Rb  Rb5  1  0.826  0.174  0.750  1.0
  Er  Er6  1  0.333  0.667  0.750  1.0
  Er  Er7  1  0.667  0.333  0.250  1.0
[/CIF]
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