The compound described by Bi4Rb5 crystallizes in the monoclinic Cm space group. There are five inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to two equivalent Bi(1), two equivalent Bi(4), and three equivalent Bi(3) atoms. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to two equivalent Bi(2), two equivalent Bi(3), and three equivalent Bi(4) atoms. In the third Rb site, Rb(3) is bonded in a 6-coordinate geometry to one Bi(2), two equivalent Bi(3), and three equivalent Bi(1) atoms. In the fourth Rb site, Rb(4) is bonded in a 6-coordinate geometry to one Bi(1), two equivalent Bi(4), and three equivalent Bi(2) atoms. In the fifth Rb site, Rb(5) is bonded in a distorted square co-planar geometry to two equivalent Bi(1) and two equivalent Bi(2) atoms. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 9-coordinate geometry to one Rb(4), two equivalent Rb(1), two equivalent Rb(5), three equivalent Rb(3), and one Bi(3) atom. In the second Bi site, Bi(2) is bonded in a 9-coordinate geometry to one Rb(3), two equivalent Rb(2), two equivalent Rb(5), three equivalent Rb(4), and one Bi(4) atom. In the third Bi site, Bi(3) is bonded in a 9-coordinate geometry to two equivalent Rb(2), two equivalent Rb(3), three equivalent Rb(1), one Bi(1), and one Bi(4) atom. In the fourth Bi site, Bi(4) is bonded in a 9-coordinate geometry to two equivalent Rb(1), two equivalent Rb(4), three equivalent Rb(2), one Bi(2), and one Bi(3) atom. is represented by the CIF file [CIF]
data_Rb5Bi4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.210
_cell_length_b   7.210
_cell_length_c   12.054
_cell_angle_alpha   70.035
_cell_angle_beta   70.035
_cell_angle_gamma   47.655
_symmetry_Int_Tables_number   1
_cell_volume   429.671
_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  0.404  0.404  0.889  1.0
  Rb  Rb1  1  0.602  0.602  0.106  1.0
  Rb  Rb2  1  0.751  0.751  0.665  1.0
  Rb  Rb3  1  0.259  0.259  0.331  1.0
  Rb  Rb4  1  0.509  0.509  0.494  1.0
  Bi  Bi5  1  0.049  0.049  0.675  1.0
  Bi  Bi6  1  0.958  0.958  0.321  1.0
  Bi  Bi7  1  0.108  0.108  0.891  1.0
  Bi  Bi8  1  0.897  0.897  0.106  1.0
[/CIF]
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The compound described by Bi4Rb5 crystallizes in the monoclinic Cm space group. There are five inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to two equivalent Bi(1), two equivalent Bi(4), and three equivalent Bi(3) atoms. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to two equivalent Bi(2), two equivalent Bi(3), and three equivalent Bi(4) atoms. In the third Rb site, Rb(3) is bonded in a 6-coordinate geometry to one Bi(2), two equivalent Bi(3), and three equivalent Bi(1) atoms. In the fourth Rb site, Rb(4) is bonded in a 6-coordinate geometry to one Bi(1), two equivalent Bi(4), and three equivalent Bi(2) atoms. In the fifth Rb site, Rb(5) is bonded in a distorted square co-planar geometry to two equivalent Bi(1) and two equivalent Bi(2) atoms. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 9-coordinate geometry to one Rb(4), two equivalent Rb(1), two equivalent Rb(5), three equivalent Rb(3), and one Bi(3) atom. In the second Bi site, Bi(2) is bonded in a 9-coordinate geometry to one Rb(3), two equivalent Rb(2), two equivalent Rb(5), three equivalent Rb(4), and one Bi(4) atom. In the third Bi site, Bi(3) is bonded in a 9-coordinate geometry to two equivalent Rb(2), two equivalent Rb(3), three equivalent Rb(1), one Bi(1), and one Bi(4) atom. In the fourth Bi site, Bi(4) is bonded in a 9-coordinate geometry to two equivalent Rb(1), two equivalent Rb(4), three equivalent Rb(2), one Bi(2), and one Bi(3) atom. is represented by the CIF file [CIF]
data_Rb5Bi4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.210
_cell_length_b   7.210
_cell_length_c   12.054
_cell_angle_alpha   70.035
_cell_angle_beta   70.035
_cell_angle_gamma   47.655
_symmetry_Int_Tables_number   1
_cell_volume   429.671
_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  0.404  0.404  0.889  1.0
  Rb  Rb1  1  0.602  0.602  0.106  1.0
  Rb  Rb2  1  0.751  0.751  0.665  1.0
  Rb  Rb3  1  0.259  0.259  0.331  1.0
  Rb  Rb4  1  0.509  0.509  0.494  1.0
  Bi  Bi5  1  0.049  0.049  0.675  1.0
  Bi  Bi6  1  0.958  0.958  0.321  1.0
  Bi  Bi7  1  0.108  0.108  0.891  1.0
  Bi  Bi8  1  0.897  0.897  0.106  1.0
[/CIF]
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