Rb2CeCl5 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 8-coordinate geometry to two equivalent Cl(1), two equivalent Cl(2), two equivalent Cl(3), and two equivalent Cl(4) atoms. Ce(1) is bonded to one Cl(1), one Cl(2), one Cl(3), and four equivalent Cl(4) atoms to form edge-sharing CeCl7 pentagonal bipyramids. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to four equivalent Rb(1) and one Ce(1) atom to form a mixture of distorted edge, face, and corner-sharing ClRb4Ce trigonal bipyramids. In the second Cl site, Cl(2) is bonded in a 5-coordinate geometry to four equivalent Rb(1) and one Ce(1) atom. In the third Cl site, Cl(3) is bonded to four equivalent Rb(1) and one Ce(1) atom to form a mixture of distorted edge, face, and corner-sharing ClRb4Ce trigonal bipyramids. In the fourth Cl site, Cl(4) is bonded in a 4-coordinate geometry to two equivalent Rb(1) and two equivalent Ce(1) atoms.
Rb2CeCl5 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 8-coordinate geometry to two equivalent Cl(1), two equivalent Cl(2), two equivalent Cl(3), and two equivalent Cl(4) atoms. There is one shorter (3.29 Å) and one longer (3.32 Å) Rb(1)-Cl(1) bond length. There is one shorter (3.36 Å) and one longer (3.46 Å) Rb(1)-Cl(2) bond length. There is one shorter (3.27 Å) and one longer (3.32 Å) Rb(1)-Cl(3) bond length. There is one shorter (3.50 Å) and one longer (3.51 Å) Rb(1)-Cl(4) bond length. Ce(1) is bonded to one Cl(1), one Cl(2), one Cl(3), and four equivalent Cl(4) atoms to form edge-sharing CeCl7 pentagonal bipyramids. The Ce(1)-Cl(1) bond length is 2.79 Å. The Ce(1)-Cl(2) bond length is 2.78 Å. The Ce(1)-Cl(3) bond length is 2.80 Å. All Ce(1)-Cl(4) bond lengths are 2.89 Å. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to four equivalent Rb(1) and one Ce(1) atom to form a mixture of distorted edge, face, and corner-sharing ClRb4Ce trigonal bipyramids. In the second Cl site, Cl(2) is bonded in a 5-coordinate geometry to four equivalent Rb(1) and one Ce(1) atom. In the third Cl site, Cl(3) is bonded to four equivalent Rb(1) and one Ce(1) atom to form a mixture of distorted edge, face, and corner-sharing ClRb4Ce trigonal bipyramids. In the fourth Cl site, Cl(4) is bonded in a 4-coordinate geometry to two equivalent Rb(1) and two equivalent Ce(1) atoms.