The crystal structure described by Rb crystallizes in the orthorhombic C222_1 space group. There are seven inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one Rb(1), one Rb(2), one Rb(4), one Rb(7), two equivalent Rb(5), and three equivalent Rb(6) atoms. In the second Rb site, Rb(2) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(4), one Rb(5), one Rb(6), and one Rb(7) atom. In the third Rb site, Rb(3) is bonded in a 8-coordinate geometry to two equivalent Rb(6), two equivalent Rb(7), and four equivalent Rb(4) atoms. In the fourth Rb site, Rb(4) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), two equivalent Rb(3), and two equivalent Rb(7) atoms. In the fifth Rb site, Rb(5) is bonded in a 4-coordinate geometry to one Rb(2), one Rb(7), two equivalent Rb(1), and two equivalent Rb(6) atoms. In the sixth Rb site, Rb(6) is bonded in a 8-coordinate geometry to one Rb(2), one Rb(3), one Rb(7), two equivalent Rb(5), and three equivalent Rb(1) atoms. In the seventh Rb site, Rb(7) is bonded to one Rb(1), one Rb(2), one Rb(3), one Rb(5), one Rb(6), one Rb(7), and two equivalent Rb(4) atoms to form distorted corner-sharing RbRb8 hexagonal bipyramids. is represented by the CIF card [CIF]
data_Rb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.247
_cell_length_b   10.247
_cell_length_c   25.552
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   111.187
_symmetry_Int_Tables_number   1
_cell_volume   2501.502
_cell_formula_units_Z   26
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  0.394  0.608  0.926  1.0
  Rb  Rb1  1  0.608  0.394  0.074  1.0
  Rb  Rb2  1  0.165  0.940  0.400  1.0
  Rb  Rb3  1  0.107  0.893  0.750  1.0
  Rb  Rb4  1  0.407  0.137  0.240  1.0
  Rb  Rb5  1  0.835  0.060  0.900  1.0
  Rb  Rb6  1  0.060  0.835  0.100  1.0
  Rb  Rb7  1  0.692  0.959  0.453  1.0
  Rb  Rb8  1  0.959  0.692  0.547  1.0
  Rb  Rb9  1  0.041  0.308  0.047  1.0
  Rb  Rb10  1  0.863  0.593  0.260  1.0
  Rb  Rb11  1  0.392  0.606  0.574  1.0
  Rb  Rb12  1  0.401  0.107  0.589  1.0
  Rb  Rb13  1  0.481  0.730  0.317  1.0
  Rb  Rb14  1  0.593  0.863  0.740  1.0
  Rb  Rb15  1  0.519  0.270  0.817  1.0
  Rb  Rb16  1  0.270  0.519  0.183  1.0
  Rb  Rb17  1  0.107  0.401  0.411  1.0
  Rb  Rb18  1  0.893  0.107  0.250  1.0
  Rb  Rb19  1  0.606  0.392  0.426  1.0
  Rb  Rb20  1  0.137  0.407  0.760  1.0
  Rb  Rb21  1  0.940  0.165  0.600  1.0
  Rb  Rb22  1  0.730  0.481  0.683  1.0
  Rb  Rb23  1  0.599  0.893  0.089  1.0
  Rb  Rb24  1  0.308  0.041  0.953  1.0
  Rb  Rb25  1  0.893  0.599  0.911  1.0
[/CIF]
.
The crystal structure described by Rb crystallizes in the orthorhombic C222_1 space group. There are seven inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one Rb(1), one Rb(2), one Rb(4), one Rb(7), two equivalent Rb(5), and three equivalent Rb(6) atoms. In the second Rb site, Rb(2) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(4), one Rb(5), one Rb(6), and one Rb(7) atom. In the third Rb site, Rb(3) is bonded in a 8-coordinate geometry to two equivalent Rb(6), two equivalent Rb(7), and four equivalent Rb(4) atoms. In the fourth Rb site, Rb(4) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), two equivalent Rb(3), and two equivalent Rb(7) atoms. In the fifth Rb site, Rb(5) is bonded in a 4-coordinate geometry to one Rb(2), one Rb(7), two equivalent Rb(1), and two equivalent Rb(6) atoms. In the sixth Rb site, Rb(6) is bonded in a 8-coordinate geometry to one Rb(2), one Rb(3), one Rb(7), two equivalent Rb(5), and three equivalent Rb(1) atoms. In the seventh Rb site, Rb(7) is bonded to one Rb(1), one Rb(2), one Rb(3), one Rb(5), one Rb(6), one Rb(7), and two equivalent Rb(4) atoms to form distorted corner-sharing RbRb8 hexagonal bipyramids. is represented by the CIF card [CIF]
data_Rb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.247
_cell_length_b   10.247
_cell_length_c   25.552
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   111.187
_symmetry_Int_Tables_number   1
_cell_volume   2501.502
_cell_formula_units_Z   26
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  0.394  0.608  0.926  1.0
  Rb  Rb1  1  0.608  0.394  0.074  1.0
  Rb  Rb2  1  0.165  0.940  0.400  1.0
  Rb  Rb3  1  0.107  0.893  0.750  1.0
  Rb  Rb4  1  0.407  0.137  0.240  1.0
  Rb  Rb5  1  0.835  0.060  0.900  1.0
  Rb  Rb6  1  0.060  0.835  0.100  1.0
  Rb  Rb7  1  0.692  0.959  0.453  1.0
  Rb  Rb8  1  0.959  0.692  0.547  1.0
  Rb  Rb9  1  0.041  0.308  0.047  1.0
  Rb  Rb10  1  0.863  0.593  0.260  1.0
  Rb  Rb11  1  0.392  0.606  0.574  1.0
  Rb  Rb12  1  0.401  0.107  0.589  1.0
  Rb  Rb13  1  0.481  0.730  0.317  1.0
  Rb  Rb14  1  0.593  0.863  0.740  1.0
  Rb  Rb15  1  0.519  0.270  0.817  1.0
  Rb  Rb16  1  0.270  0.519  0.183  1.0
  Rb  Rb17  1  0.107  0.401  0.411  1.0
  Rb  Rb18  1  0.893  0.107  0.250  1.0
  Rb  Rb19  1  0.606  0.392  0.426  1.0
  Rb  Rb20  1  0.137  0.407  0.760  1.0
  Rb  Rb21  1  0.940  0.165  0.600  1.0
  Rb  Rb22  1  0.730  0.481  0.683  1.0
  Rb  Rb23  1  0.599  0.893  0.089  1.0
  Rb  Rb24  1  0.308  0.041  0.953  1.0
  Rb  Rb25  1  0.893  0.599  0.911  1.0
[/CIF]
.