The structure described by RbBiF4 crystallizes in the triclinic P1 space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 5-coordinate geometry to one F(1), one F(3), and three equivalent F(2) atoms. In the second Rb site, Rb(2) is bonded to one F(5) and three equivalent F(3) atoms to form corner-sharing RbF4 tetrahedra. In the third Rb site, Rb(3) is bonded in a 7-coordinate geometry to one F(7), three equivalent F(5), and three equivalent F(6) atoms. There are three inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to one F(1), one F(11), one F(2), one F(8), and two equivalent F(12) atoms. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to one F(6), one F(9), two equivalent F(4), and two equivalent F(7) atoms. In the third Bi site, Bi(3) is bonded in a 6-coordinate geometry to one F(11), one F(9), two equivalent F(10), and two equivalent F(8) atoms. There are twelve inequivalent F sites. In the first F site, F(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1) and one Bi(1) atom. In the second F site, F(2) is bonded to three equivalent Rb(1) and one Bi(1) atom to form FRb3Bi tetrahedra that share corners with three equivalent F(3)Rb4 tetrahedra and corners with six equivalent F(2)Rb3Bi tetrahedra. In the third F site, F(3) is bonded to one Rb(1) and three equivalent Rb(2) atoms to form FRb4 tetrahedra that share corners with three equivalent F(2)Rb3Bi tetrahedra, corners with six equivalent F(3)Rb4 tetrahedra, and corners with three equivalent F(5)Rb4 trigonal pyramids. In the fourth F site, F(4) is bonded in a distorted bent 150 degrees geometry to two equivalent Bi(2) atoms. In the fifth F site, F(5) is bonded to one Rb(2) and three equivalent Rb(3) atoms to form corner-sharing FRb4 trigonal pyramids. In the sixth F site, F(6) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Rb(3) and one Bi(2) atom. In the seventh F site, F(7) is bonded in a 3-coordinate geometry to one Rb(3) and two equivalent Bi(2) atoms. In the eighth F site, F(8) is bonded in a 3-coordinate geometry to one Bi(1) and two equivalent Bi(3) atoms. In the ninth F site, F(9) is bonded in a bent 120 degrees geometry to one Bi(2) and one Bi(3) atom. In the tenth F site, F(10) is bonded in a 2-coordinate geometry to two equivalent Bi(3) atoms. In the eleventh F site, F(11) is bonded in a bent 120 degrees geometry to one Bi(1) and one Bi(3) atom. In the twelfth F site, F(12) is bonded in a bent 150 degrees geometry to two equivalent Bi(1) atoms. is represented by the CIF card [CIF]
data_RbBiF4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.315
_cell_length_b   4.320
_cell_length_c   21.929
_cell_angle_alpha   84.669
_cell_angle_beta   85.945
_cell_angle_gamma   64.484
_symmetry_Int_Tables_number   1
_cell_volume   367.086
_cell_formula_units_Z   3
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  0.353  0.372  0.844  1.0
  Rb  Rb1  1  0.670  0.671  0.674  1.0
  Rb  Rb2  1  0.954  0.982  0.502  1.0
  Bi  Bi3  1  0.928  0.036  0.004  1.0
  Bi  Bi4  1  0.260  0.467  0.323  1.0
  Bi  Bi5  1  0.587  0.777  0.166  1.0
  F  F6  1  0.412  0.284  0.969  1.0
  F  F7  1  0.007  0.005  0.899  1.0
  F  F8  1  0.315  0.307  0.727  1.0
  F  F9  1  0.717  0.651  0.299  1.0
  F  F10  1  0.599  0.617  0.558  1.0
  F  F11  1  0.241  0.393  0.421  1.0
  F  F12  1  0.044  0.995  0.350  1.0
  F  F13  1  0.154  0.833  0.113  1.0
  F  F14  1  0.153  0.886  0.231  1.0
  F  F15  1  0.478  0.264  0.203  1.0
  F  F16  1  0.534  0.153  0.085  1.0
  F  F17  1  0.759  0.600  0.018  1.0
[/CIF]
.
The structure described by RbBiF4 crystallizes in the triclinic P1 space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 5-coordinate geometry to one F(1), one F(3), and three equivalent F(2) atoms. In the second Rb site, Rb(2) is bonded to one F(5) and three equivalent F(3) atoms to form corner-sharing RbF4 tetrahedra. In the third Rb site, Rb(3) is bonded in a 7-coordinate geometry to one F(7), three equivalent F(5), and three equivalent F(6) atoms. There are three inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to one F(1), one F(11), one F(2), one F(8), and two equivalent F(12) atoms. In the second Bi site, Bi(2) is bonded in a 6-coordinate geometry to one F(6), one F(9), two equivalent F(4), and two equivalent F(7) atoms. In the third Bi site, Bi(3) is bonded in a 6-coordinate geometry to one F(11), one F(9), two equivalent F(10), and two equivalent F(8) atoms. There are twelve inequivalent F sites. In the first F site, F(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1) and one Bi(1) atom. In the second F site, F(2) is bonded to three equivalent Rb(1) and one Bi(1) atom to form FRb3Bi tetrahedra that share corners with three equivalent F(3)Rb4 tetrahedra and corners with six equivalent F(2)Rb3Bi tetrahedra. In the third F site, F(3) is bonded to one Rb(1) and three equivalent Rb(2) atoms to form FRb4 tetrahedra that share corners with three equivalent F(2)Rb3Bi tetrahedra, corners with six equivalent F(3)Rb4 tetrahedra, and corners with three equivalent F(5)Rb4 trigonal pyramids. In the fourth F site, F(4) is bonded in a distorted bent 150 degrees geometry to two equivalent Bi(2) atoms. In the fifth F site, F(5) is bonded to one Rb(2) and three equivalent Rb(3) atoms to form corner-sharing FRb4 trigonal pyramids. In the sixth F site, F(6) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Rb(3) and one Bi(2) atom. In the seventh F site, F(7) is bonded in a 3-coordinate geometry to one Rb(3) and two equivalent Bi(2) atoms. In the eighth F site, F(8) is bonded in a 3-coordinate geometry to one Bi(1) and two equivalent Bi(3) atoms. In the ninth F site, F(9) is bonded in a bent 120 degrees geometry to one Bi(2) and one Bi(3) atom. In the tenth F site, F(10) is bonded in a 2-coordinate geometry to two equivalent Bi(3) atoms. In the eleventh F site, F(11) is bonded in a bent 120 degrees geometry to one Bi(1) and one Bi(3) atom. In the twelfth F site, F(12) is bonded in a bent 150 degrees geometry to two equivalent Bi(1) atoms. is represented by the CIF card [CIF]
data_RbBiF4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.315
_cell_length_b   4.320
_cell_length_c   21.929
_cell_angle_alpha   84.669
_cell_angle_beta   85.945
_cell_angle_gamma   64.484
_symmetry_Int_Tables_number   1
_cell_volume   367.086
_cell_formula_units_Z   3
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  0.353  0.372  0.844  1.0
  Rb  Rb1  1  0.670  0.671  0.674  1.0
  Rb  Rb2  1  0.954  0.982  0.502  1.0
  Bi  Bi3  1  0.928  0.036  0.004  1.0
  Bi  Bi4  1  0.260  0.467  0.323  1.0
  Bi  Bi5  1  0.587  0.777  0.166  1.0
  F  F6  1  0.412  0.284  0.969  1.0
  F  F7  1  0.007  0.005  0.899  1.0
  F  F8  1  0.315  0.307  0.727  1.0
  F  F9  1  0.717  0.651  0.299  1.0
  F  F10  1  0.599  0.617  0.558  1.0
  F  F11  1  0.241  0.393  0.421  1.0
  F  F12  1  0.044  0.995  0.350  1.0
  F  F13  1  0.154  0.833  0.113  1.0
  F  F14  1  0.153  0.886  0.231  1.0
  F  F15  1  0.478  0.264  0.203  1.0
  F  F16  1  0.534  0.153  0.085  1.0
  F  F17  1  0.759  0.600  0.018  1.0
[/CIF]
.