The material structure described by RbTbSe2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. Rb(1) is bonded to six equivalent Se(1) atoms to form distorted RbSe6 octahedra that share corners with six equivalent Tb(1)Se6 octahedra, edges with six equivalent Rb(1)Se6 octahedra, and edges with six equivalent Tb(1)Se6 octahedra. The corner-sharing octahedral tilt angles are 12°. Tb(1) is bonded to six equivalent Se(1) atoms to form TbSe6 octahedra that share corners with six equivalent Rb(1)Se6 octahedra, edges with six equivalent Rb(1)Se6 octahedra, and edges with six equivalent Tb(1)Se6 octahedra. The corner-sharing octahedral tilt angles are 12°. Se(1) is bonded to three equivalent Rb(1) and three equivalent Tb(1) atoms to form a mixture of corner and edge-sharing SeRb3Tb3 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF card [CIF]
data_RbTbSe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.307
_cell_length_b   8.307
_cell_length_c   8.307
_cell_angle_alpha   29.572
_cell_angle_beta   29.572
_cell_angle_gamma   29.572
_symmetry_Int_Tables_number   1
_cell_volume   123.583
_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
  Tb  Tb1  1  0.500  0.500  0.500  1.0
  Se  Se2  1  0.232  0.232  0.232  1.0
  Se  Se3  1  0.768  0.768  0.768  1.0
[/CIF]
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The material structure described by RbTbSe2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. Rb(1) is bonded to six equivalent Se(1) atoms to form distorted RbSe6 octahedra that share corners with six equivalent Tb(1)Se6 octahedra, edges with six equivalent Rb(1)Se6 octahedra, and edges with six equivalent Tb(1)Se6 octahedra. The corner-sharing octahedral tilt angles are 12°. Tb(1) is bonded to six equivalent Se(1) atoms to form TbSe6 octahedra that share corners with six equivalent Rb(1)Se6 octahedra, edges with six equivalent Rb(1)Se6 octahedra, and edges with six equivalent Tb(1)Se6 octahedra. The corner-sharing octahedral tilt angles are 12°. Se(1) is bonded to three equivalent Rb(1) and three equivalent Tb(1) atoms to form a mixture of corner and edge-sharing SeRb3Tb3 octahedra. The corner-sharing octahedra are not tilted. is represented by the CIF card [CIF]
data_RbTbSe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.307
_cell_length_b   8.307
_cell_length_c   8.307
_cell_angle_alpha   29.572
_cell_angle_beta   29.572
_cell_angle_gamma   29.572
_symmetry_Int_Tables_number   1
_cell_volume   123.583
_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
  Tb  Tb1  1  0.500  0.500  0.500  1.0
  Se  Se2  1  0.232  0.232  0.232  1.0
  Se  Se3  1  0.768  0.768  0.768  1.0
[/CIF]
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