data_Rb3MnBi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.2
_cell_length_b   7.2
_cell_length_c   7.2
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Rb3MnBi
_chemical_formula_sum   'Rb3 Mn1 Bi1'
_cell_volume   373.73
_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  Rb2  1  0.6  0.0  0.6  1.0
  Rb  Rb3  1  0.6  0.6  0.0  1.0
  Rb  Rb4  1  0.0  0.6  0.6  1.0
  Mn  Mn0  1  0.0  0.0  0.0  1.0
  Bi  Bi1  1  0.6  0.6  0.6  1.0

data_Rb3MnBi
_symmetry_space_group_name_H-M   R3m
_cell_length_a   10.19
_cell_length_b   10.19
_cell_length_c   12.48
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Rb3MnBi
_chemical_formula_sum   'Rb9 Mn3 Bi3'
_cell_volume   1121.2
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  9  0.2  0.4  0.4  1.0
  Mn  Mn1  3  0.0  0.0  0.0  1.0
  Bi  Bi2  3  0.0  0.0  0.6  1.0

Rb Rb Rb Mn Bi
Rb Rb Rb Mn Bi 0 4 o - o 0 3 + o + 1 4 o o - 1 3 + + o 2 4 - o o 2 3 o + + 3 4 - - - 
Rb3MnBi is alpha Po structured and crystallizes in the trigonal R3m space group. The structure is zero-dimensional and consists of three Rb3MnBi clusters. Rb(1) is bonded in a distorted single-bond geometry to one Mn(1) and one Bi(1) atom. The Rb(1)-Mn(1) bond length is 4.06 Å. The Rb(1)-Bi(1) bond length is 2.87 Å. Mn(1) is bonded in a 3-coordinate geometry to three equivalent Rb(1) atoms. Bi(1) is bonded in a distorted octahedral geometry to three equivalent Rb(1) atoms.