The compound described by Rb2BiF5 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 8-coordinate geometry to two equivalent F(1), two equivalent F(2), two equivalent F(3), and two equivalent F(4) atoms. In the second Rb site, Rb(2) is bonded in a 10-coordinate geometry to two equivalent F(1), two equivalent F(3), two equivalent F(4), and four equivalent F(2) atoms. Bi(1) is bonded to one F(1), one F(4), two equivalent F(2), and two equivalent F(3) atoms to form corner-sharing BiF6 octahedra. The corner-sharing octahedra are not tilted. There are four inequivalent F sites. In the first F site, F(1) is bonded in a 5-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), and one Bi(1) atom. In the second F site, F(2) is bonded in a 4-coordinate geometry to one Rb(1), two equivalent Rb(2), and one Bi(1) atom. In the third F site, F(3) is bonded in a distorted linear geometry to two equivalent Rb(1), two equivalent Rb(2), and two equivalent Bi(1) atoms. In the fourth F site, F(4) is bonded in a 5-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), and one Bi(1) atom. is represented by the CIF file [CIF]
data_Rb2BiF5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.310
_cell_length_b   8.198
_cell_length_c   12.568
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   650.160
_cell_formula_units_Z   4
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  0.750  0.502  0.267  1.0
  Rb  Rb1  1  0.250  0.498  0.733  1.0
  Rb  Rb2  1  0.250  0.998  0.767  1.0
  Rb  Rb3  1  0.750  0.002  0.233  1.0
  Rb  Rb4  1  0.750  0.836  0.584  1.0
  Rb  Rb5  1  0.250  0.164  0.416  1.0
  Rb  Rb6  1  0.250  0.664  0.084  1.0
  Rb  Rb7  1  0.750  0.336  0.916  1.0
  Bi  Bi8  1  0.750  0.814  0.935  1.0
  Bi  Bi9  1  0.250  0.186  0.065  1.0
  Bi  Bi10  1  0.250  0.686  0.435  1.0
  Bi  Bi11  1  0.750  0.314  0.565  1.0
  F  F12  1  0.750  0.724  0.105  1.0
  F  F13  1  0.250  0.276  0.895  1.0
  F  F14  1  0.250  0.776  0.605  1.0
  F  F15  1  0.750  0.224  0.395  1.0
  F  F16  1  0.007  0.645  0.892  1.0
  F  F17  1  0.993  0.355  0.108  1.0
  F  F18  1  0.993  0.855  0.392  1.0
  F  F19  1  0.507  0.355  0.108  1.0
  F  F20  1  0.007  0.145  0.608  1.0
  F  F21  1  0.493  0.645  0.892  1.0
  F  F22  1  0.493  0.145  0.608  1.0
  F  F23  1  0.507  0.855  0.392  1.0
  F  F24  1  0.000  0.000  0.000  1.0
  F  F25  1  0.000  0.500  0.500  1.0
  F  F26  1  0.500  0.000  0.000  1.0
  F  F27  1  0.500  0.500  0.500  1.0
  F  F28  1  0.750  0.965  0.787  1.0
  F  F29  1  0.250  0.035  0.213  1.0
  F  F30  1  0.250  0.535  0.287  1.0
  F  F31  1  0.750  0.465  0.713  1.0
[/CIF]
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The compound described by Rb2BiF5 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 8-coordinate geometry to two equivalent F(1), two equivalent F(2), two equivalent F(3), and two equivalent F(4) atoms. In the second Rb site, Rb(2) is bonded in a 10-coordinate geometry to two equivalent F(1), two equivalent F(3), two equivalent F(4), and four equivalent F(2) atoms. Bi(1) is bonded to one F(1), one F(4), two equivalent F(2), and two equivalent F(3) atoms to form corner-sharing BiF6 octahedra. The corner-sharing octahedra are not tilted. There are four inequivalent F sites. In the first F site, F(1) is bonded in a 5-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), and one Bi(1) atom. In the second F site, F(2) is bonded in a 4-coordinate geometry to one Rb(1), two equivalent Rb(2), and one Bi(1) atom. In the third F site, F(3) is bonded in a distorted linear geometry to two equivalent Rb(1), two equivalent Rb(2), and two equivalent Bi(1) atoms. In the fourth F site, F(4) is bonded in a 5-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), and one Bi(1) atom. is represented by the CIF file [CIF]
data_Rb2BiF5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.310
_cell_length_b   8.198
_cell_length_c   12.568
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   650.160
_cell_formula_units_Z   4
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  0.750  0.502  0.267  1.0
  Rb  Rb1  1  0.250  0.498  0.733  1.0
  Rb  Rb2  1  0.250  0.998  0.767  1.0
  Rb  Rb3  1  0.750  0.002  0.233  1.0
  Rb  Rb4  1  0.750  0.836  0.584  1.0
  Rb  Rb5  1  0.250  0.164  0.416  1.0
  Rb  Rb6  1  0.250  0.664  0.084  1.0
  Rb  Rb7  1  0.750  0.336  0.916  1.0
  Bi  Bi8  1  0.750  0.814  0.935  1.0
  Bi  Bi9  1  0.250  0.186  0.065  1.0
  Bi  Bi10  1  0.250  0.686  0.435  1.0
  Bi  Bi11  1  0.750  0.314  0.565  1.0
  F  F12  1  0.750  0.724  0.105  1.0
  F  F13  1  0.250  0.276  0.895  1.0
  F  F14  1  0.250  0.776  0.605  1.0
  F  F15  1  0.750  0.224  0.395  1.0
  F  F16  1  0.007  0.645  0.892  1.0
  F  F17  1  0.993  0.355  0.108  1.0
  F  F18  1  0.993  0.855  0.392  1.0
  F  F19  1  0.507  0.355  0.108  1.0
  F  F20  1  0.007  0.145  0.608  1.0
  F  F21  1  0.493  0.645  0.892  1.0
  F  F22  1  0.493  0.145  0.608  1.0
  F  F23  1  0.507  0.855  0.392  1.0
  F  F24  1  0.000  0.000  0.000  1.0
  F  F25  1  0.000  0.500  0.500  1.0
  F  F26  1  0.500  0.000  0.000  1.0
  F  F27  1  0.500  0.500  0.500  1.0
  F  F28  1  0.750  0.965  0.787  1.0
  F  F29  1  0.250  0.035  0.213  1.0
  F  F30  1  0.250  0.535  0.287  1.0
  F  F31  1  0.750  0.465  0.713  1.0
[/CIF]
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