The crystal structure described by RbCe3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. Rb(1) is bonded to four equivalent Ce(2) and eight equivalent Ce(1) atoms to form RbCe12 cuboctahedra that share corners with four equivalent Rb(1)Ce12 cuboctahedra, corners with eight equivalent Ce(2)Rb4Ce8 cuboctahedra, edges with eight equivalent Rb(1)Ce12 cuboctahedra, edges with sixteen equivalent Ce(1)Rb4Ce8 cuboctahedra, faces with four equivalent Rb(1)Ce12 cuboctahedra, faces with six equivalent Ce(2)Rb4Ce8 cuboctahedra, and faces with eight equivalent Ce(1)Rb4Ce8 cuboctahedra. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to four equivalent Rb(1), four equivalent Ce(1), and four equivalent Ce(2) atoms to form CeRb4Ce8 cuboctahedra that share corners with twelve equivalent Ce(1)Rb4Ce8 cuboctahedra, edges with eight equivalent Rb(1)Ce12 cuboctahedra, edges with eight equivalent Ce(1)Rb4Ce8 cuboctahedra, edges with eight equivalent Ce(2)Rb4Ce8 cuboctahedra, faces with four equivalent Rb(1)Ce12 cuboctahedra, faces with four equivalent Ce(2)Rb4Ce8 cuboctahedra, and faces with ten equivalent Ce(1)Rb4Ce8 cuboctahedra. In the second Ce site, Ce(2) is bonded to four equivalent Rb(1) and eight equivalent Ce(1) atoms to form CeRb4Ce8 cuboctahedra that share corners with four equivalent Ce(2)Rb4Ce8 cuboctahedra, corners with eight equivalent Rb(1)Ce12 cuboctahedra, edges with eight equivalent Ce(2)Rb4Ce8 cuboctahedra, edges with sixteen equivalent Ce(1)Rb4Ce8 cuboctahedra, faces with four equivalent Ce(2)Rb4Ce8 cuboctahedra, faces with six equivalent Rb(1)Ce12 cuboctahedra, and faces with eight equivalent Ce(1)Rb4Ce8 cuboctahedra. is represented by the CIF file [CIF]
data_RbCe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.410
_cell_length_b   6.410
_cell_length_c   6.410
_cell_angle_alpha   132.012
_cell_angle_beta   132.012
_cell_angle_gamma   70.210
_symmetry_Int_Tables_number   1
_cell_volume   142.501
_cell_formula_units_Z   1
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  0.000  0.000  0.000  1.0
  Ce  Ce1  1  0.750  0.250  0.500  1.0
  Ce  Ce2  1  0.250  0.750  0.500  1.0
  Ce  Ce3  1  0.500  0.500  0.000  1.0
[/CIF]
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The crystal structure described by RbCe3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. Rb(1) is bonded to four equivalent Ce(2) and eight equivalent Ce(1) atoms to form RbCe12 cuboctahedra that share corners with four equivalent Rb(1)Ce12 cuboctahedra, corners with eight equivalent Ce(2)Rb4Ce8 cuboctahedra, edges with eight equivalent Rb(1)Ce12 cuboctahedra, edges with sixteen equivalent Ce(1)Rb4Ce8 cuboctahedra, faces with four equivalent Rb(1)Ce12 cuboctahedra, faces with six equivalent Ce(2)Rb4Ce8 cuboctahedra, and faces with eight equivalent Ce(1)Rb4Ce8 cuboctahedra. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded to four equivalent Rb(1), four equivalent Ce(1), and four equivalent Ce(2) atoms to form CeRb4Ce8 cuboctahedra that share corners with twelve equivalent Ce(1)Rb4Ce8 cuboctahedra, edges with eight equivalent Rb(1)Ce12 cuboctahedra, edges with eight equivalent Ce(1)Rb4Ce8 cuboctahedra, edges with eight equivalent Ce(2)Rb4Ce8 cuboctahedra, faces with four equivalent Rb(1)Ce12 cuboctahedra, faces with four equivalent Ce(2)Rb4Ce8 cuboctahedra, and faces with ten equivalent Ce(1)Rb4Ce8 cuboctahedra. In the second Ce site, Ce(2) is bonded to four equivalent Rb(1) and eight equivalent Ce(1) atoms to form CeRb4Ce8 cuboctahedra that share corners with four equivalent Ce(2)Rb4Ce8 cuboctahedra, corners with eight equivalent Rb(1)Ce12 cuboctahedra, edges with eight equivalent Ce(2)Rb4Ce8 cuboctahedra, edges with sixteen equivalent Ce(1)Rb4Ce8 cuboctahedra, faces with four equivalent Ce(2)Rb4Ce8 cuboctahedra, faces with six equivalent Rb(1)Ce12 cuboctahedra, and faces with eight equivalent Ce(1)Rb4Ce8 cuboctahedra. is represented by the CIF file [CIF]
data_RbCe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.410
_cell_length_b   6.410
_cell_length_c   6.410
_cell_angle_alpha   132.012
_cell_angle_beta   132.012
_cell_angle_gamma   70.210
_symmetry_Int_Tables_number   1
_cell_volume   142.501
_cell_formula_units_Z   1
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  0.000  0.000  0.000  1.0
  Ce  Ce1  1  0.750  0.250  0.500  1.0
  Ce  Ce2  1  0.250  0.750  0.500  1.0
  Ce  Ce3  1  0.500  0.500  0.000  1.0
[/CIF]
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