Rb crystallizes in the triclinic P1 space group. There are eight inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to one Rb(4), two equivalent Rb(2), two equivalent Rb(3), and two equivalent Rb(8) atoms. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one Rb(7), two equivalent Rb(1), two equivalent Rb(5), and two equivalent Rb(6) atoms. In the third Rb site, Rb(3) is bonded in a 9-coordinate geometry to one Rb(8), two equivalent Rb(1), two equivalent Rb(5), two equivalent Rb(6), and two equivalent Rb(7) atoms. In the fourth Rb site, Rb(4) is bonded in a distorted hexagonal planar geometry to one Rb(1), one Rb(5), two equivalent Rb(6), and two equivalent Rb(7) atoms. In the fifth Rb site, Rb(5) is bonded in a 7-coordinate geometry to one Rb(4), one Rb(6), two equivalent Rb(2), two equivalent Rb(3), and two equivalent Rb(8) atoms. In the sixth Rb site, Rb(6) is bonded in a 9-coordinate geometry to one Rb(5), two equivalent Rb(2), two equivalent Rb(3), two equivalent Rb(4), and two equivalent Rb(8) atoms. In the seventh Rb site, Rb(7) is bonded in a 7-coordinate geometry to one Rb(2), two equivalent Rb(3), two equivalent Rb(4), and two equivalent Rb(8) atoms. In the eighth Rb site, Rb(8) is bonded in a 9-coordinate geometry to one Rb(3), two equivalent Rb(1), two equivalent Rb(5), two equivalent Rb(6), and two equivalent Rb(7) atoms.
Rb crystallizes in the triclinic P1 space group. There are eight inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to one Rb(4), two equivalent Rb(2), two equivalent Rb(3), and two equivalent Rb(8) atoms. The Rb(1)-Rb(4) bond length is 4.71 Å. There is one shorter (4.90 Å) and one longer (4.95 Å) Rb(1)-Rb(2) bond length. There is one shorter (4.83 Å) and one longer (5.05 Å) Rb(1)-Rb(3) bond length. There is one shorter (4.82 Å) and one longer (4.90 Å) Rb(1)-Rb(8) bond length. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one Rb(7), two equivalent Rb(1), two equivalent Rb(5), and two equivalent Rb(6) atoms. The Rb(2)-Rb(7) bond length is 4.71 Å. There is one shorter (4.84 Å) and one longer (4.95 Å) Rb(2)-Rb(5) bond length. There is one shorter (4.72 Å) and one longer (5.04 Å) Rb(2)-Rb(6) bond length. In the third Rb site, Rb(3) is bonded in a 9-coordinate geometry to one Rb(8), two equivalent Rb(1), two equivalent Rb(5), two equivalent Rb(6), and two equivalent Rb(7) atoms. The Rb(3)-Rb(8) bond length is 5.06 Å. There is one shorter (4.84 Å) and one longer (4.88 Å) Rb(3)-Rb(5) bond length. There is one shorter (4.90 Å) and one longer (5.03 Å) Rb(3)-Rb(6) bond length. There is one shorter (4.83 Å) and one longer (4.93 Å) Rb(3)-Rb(7) bond length. In the fourth Rb site, Rb(4) is bonded in a distorted hexagonal planar geometry to one Rb(1), one Rb(5), two equivalent Rb(6), and two equivalent Rb(7) atoms. The Rb(4)-Rb(5) bond length is 4.77 Å. There is one shorter (4.80 Å) and one longer (4.88 Å) Rb(4)-Rb(6) bond length. There is one shorter (4.88 Å) and one longer (4.90 Å) Rb(4)-Rb(7) bond length. In the fifth Rb site, Rb(5) is bonded in a 7-coordinate geometry to one Rb(4), one Rb(6), two equivalent Rb(2), two equivalent Rb(3), and two equivalent Rb(8) atoms. The Rb(5)-Rb(6) bond length is 5.14 Å. There is one shorter (4.90 Å) and one longer (4.93 Å) Rb(5)-Rb(8) bond length. In the sixth Rb site, Rb(6) is bonded in a 9-coordinate geometry to one Rb(5), two equivalent Rb(2), two equivalent Rb(3), two equivalent Rb(4), and two equivalent Rb(8) atoms. There is one shorter (4.89 Å) and one longer (5.00 Å) Rb(6)-Rb(8) bond length. In the seventh Rb site, Rb(7) is bonded in a 7-coordinate geometry to one Rb(2), two equivalent Rb(3), two equivalent Rb(4), and two equivalent Rb(8) atoms. There is one shorter (4.74 Å) and one longer (5.09 Å) Rb(7)-Rb(8) bond length. In the eighth Rb site, Rb(8) is bonded in a 9-coordinate geometry to one Rb(3), two equivalent Rb(1), two equivalent Rb(5), two equivalent Rb(6), and two equivalent Rb(7) atoms.