The material structure described by BiRb is Magnesium tetraboride-like structured and crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to one Bi(1), two equivalent Bi(3), and three equivalent Bi(4) atoms. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one Bi(3), one Bi(4), two equivalent Bi(2), and three equivalent Bi(1) atoms. In the third Rb site, Rb(3) is bonded in a 7-coordinate geometry to one Bi(3), three equivalent Bi(1), and three equivalent Bi(2) atoms. In the fourth Rb site, Rb(4) is bonded in a 6-coordinate geometry to one Bi(2), two equivalent Bi(4), and three equivalent Bi(3) atoms. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 9-coordinate geometry to one Rb(1), three equivalent Rb(2), three equivalent Rb(3), and two equivalent Bi(2) atoms. In the second Bi site, Bi(2) is bonded in a 8-coordinate geometry to one Rb(4), two equivalent Rb(2), three equivalent Rb(3), and two equivalent Bi(1) atoms. In the third Bi site, Bi(3) is bonded in a 9-coordinate geometry to one Rb(2), one Rb(3), two equivalent Rb(1), three equivalent Rb(4), and two equivalent Bi(4) atoms. In the fourth Bi site, Bi(4) is bonded in a 8-coordinate geometry to one Rb(2), two equivalent Rb(4), three equivalent Rb(1), and two equivalent Bi(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbBi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.541
_cell_length_b   14.121
_cell_length_c   14.991
_cell_angle_alpha   113.394
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1465.044
_cell_formula_units_Z   16
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  0.141  0.549  0.851  1.0
  Rb  Rb1  1  0.641  0.951  0.149  1.0
  Rb  Rb2  1  0.859  0.451  0.149  1.0
  Rb  Rb3  1  0.359  0.049  0.851  1.0
  Rb  Rb4  1  0.424  0.689  0.656  1.0
  Rb  Rb5  1  0.924  0.811  0.344  1.0
  Rb  Rb6  1  0.576  0.311  0.344  1.0
  Rb  Rb7  1  0.076  0.189  0.656  1.0
  Rb  Rb8  1  0.196  0.533  0.395  1.0
  Rb  Rb9  1  0.696  0.967  0.605  1.0
  Rb  Rb10  1  0.804  0.467  0.605  1.0
  Rb  Rb11  1  0.304  0.033  0.395  1.0
  Rb  Rb12  1  0.382  0.645  0.124  1.0
  Rb  Rb13  1  0.882  0.855  0.876  1.0
  Rb  Rb14  1  0.618  0.355  0.876  1.0
  Rb  Rb15  1  0.118  0.145  0.124  1.0
  Bi  Bi16  1  0.201  0.881  0.575  1.0
  Bi  Bi17  1  0.701  0.619  0.425  1.0
  Bi  Bi18  1  0.799  0.119  0.425  1.0
  Bi  Bi19  1  0.299  0.381  0.575  1.0
  Bi  Bi20  1  0.433  0.770  0.398  1.0
  Bi  Bi21  1  0.933  0.730  0.602  1.0
  Bi  Bi22  1  0.567  0.230  0.602  1.0
  Bi  Bi23  1  0.067  0.270  0.398  1.0
  Bi  Bi24  1  0.126  0.864  0.105  1.0
  Bi  Bi25  1  0.626  0.636  0.895  1.0
  Bi  Bi26  1  0.874  0.136  0.895  1.0
  Bi  Bi27  1  0.374  0.364  0.105  1.0
  Bi  Bi28  1  0.866  0.687  0.072  1.0
  Bi  Bi29  1  0.366  0.813  0.928  1.0
  Bi  Bi30  1  0.134  0.313  0.928  1.0
  Bi  Bi31  1  0.634  0.187  0.072  1.0
[/CIF]
.
The material structure described by BiRb is Magnesium tetraboride-like structured and crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to one Bi(1), two equivalent Bi(3), and three equivalent Bi(4) atoms. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one Bi(3), one Bi(4), two equivalent Bi(2), and three equivalent Bi(1) atoms. In the third Rb site, Rb(3) is bonded in a 7-coordinate geometry to one Bi(3), three equivalent Bi(1), and three equivalent Bi(2) atoms. In the fourth Rb site, Rb(4) is bonded in a 6-coordinate geometry to one Bi(2), two equivalent Bi(4), and three equivalent Bi(3) atoms. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 9-coordinate geometry to one Rb(1), three equivalent Rb(2), three equivalent Rb(3), and two equivalent Bi(2) atoms. In the second Bi site, Bi(2) is bonded in a 8-coordinate geometry to one Rb(4), two equivalent Rb(2), three equivalent Rb(3), and two equivalent Bi(1) atoms. In the third Bi site, Bi(3) is bonded in a 9-coordinate geometry to one Rb(2), one Rb(3), two equivalent Rb(1), three equivalent Rb(4), and two equivalent Bi(4) atoms. In the fourth Bi site, Bi(4) is bonded in a 8-coordinate geometry to one Rb(2), two equivalent Rb(4), three equivalent Rb(1), and two equivalent Bi(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbBi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.541
_cell_length_b   14.121
_cell_length_c   14.991
_cell_angle_alpha   113.394
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1465.044
_cell_formula_units_Z   16
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  0.141  0.549  0.851  1.0
  Rb  Rb1  1  0.641  0.951  0.149  1.0
  Rb  Rb2  1  0.859  0.451  0.149  1.0
  Rb  Rb3  1  0.359  0.049  0.851  1.0
  Rb  Rb4  1  0.424  0.689  0.656  1.0
  Rb  Rb5  1  0.924  0.811  0.344  1.0
  Rb  Rb6  1  0.576  0.311  0.344  1.0
  Rb  Rb7  1  0.076  0.189  0.656  1.0
  Rb  Rb8  1  0.196  0.533  0.395  1.0
  Rb  Rb9  1  0.696  0.967  0.605  1.0
  Rb  Rb10  1  0.804  0.467  0.605  1.0
  Rb  Rb11  1  0.304  0.033  0.395  1.0
  Rb  Rb12  1  0.382  0.645  0.124  1.0
  Rb  Rb13  1  0.882  0.855  0.876  1.0
  Rb  Rb14  1  0.618  0.355  0.876  1.0
  Rb  Rb15  1  0.118  0.145  0.124  1.0
  Bi  Bi16  1  0.201  0.881  0.575  1.0
  Bi  Bi17  1  0.701  0.619  0.425  1.0
  Bi  Bi18  1  0.799  0.119  0.425  1.0
  Bi  Bi19  1  0.299  0.381  0.575  1.0
  Bi  Bi20  1  0.433  0.770  0.398  1.0
  Bi  Bi21  1  0.933  0.730  0.602  1.0
  Bi  Bi22  1  0.567  0.230  0.602  1.0
  Bi  Bi23  1  0.067  0.270  0.398  1.0
  Bi  Bi24  1  0.126  0.864  0.105  1.0
  Bi  Bi25  1  0.626  0.636  0.895  1.0
  Bi  Bi26  1  0.874  0.136  0.895  1.0
  Bi  Bi27  1  0.374  0.364  0.105  1.0
  Bi  Bi28  1  0.866  0.687  0.072  1.0
  Bi  Bi29  1  0.366  0.813  0.928  1.0
  Bi  Bi30  1  0.134  0.313  0.928  1.0
  Bi  Bi31  1  0.634  0.187  0.072  1.0
[/CIF]
.