Rb2EuCl5 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. Eu(1) is bonded to one Cl(1), one Cl(3), one Cl(4), and four equivalent Cl(2) atoms to form distorted edge-sharing EuCl7 pentagonal bipyramids. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 5-coordinate geometry to four equivalent Rb(1) and one Eu(1) atom. In the second Cl site, Cl(2) is bonded in a 4-coordinate geometry to two equivalent Rb(1) and two equivalent Eu(1) atoms. In the third Cl site, Cl(3) is bonded to four equivalent Rb(1) and one Eu(1) atom to form a mixture of distorted face, corner, and edge-sharing ClRb4Eu trigonal bipyramids. In the fourth Cl site, Cl(4) is bonded to four equivalent Rb(1) and one Eu(1) atom to form a mixture of distorted face, corner, and edge-sharing ClRb4Eu trigonal bipyramids.
Rb2EuCl5 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 (3.37 Å) and one longer (3.43 Å) Rb(1)-Cl(1) bond length. Both Rb(1)-Cl(2) bond lengths are 3.47 Å. There is one shorter (3.27 Å) and one longer (3.31 Å) Rb(1)-Cl(3) bond length. There is one shorter (3.28 Å) and one longer (3.31 Å) Rb(1)-Cl(4) bond length. Eu(1) is bonded to one Cl(1), one Cl(3), one Cl(4), and four equivalent Cl(2) atoms to form distorted edge-sharing EuCl7 pentagonal bipyramids. The Eu(1)-Cl(1) bond length is 2.73 Å. The Eu(1)-Cl(3) bond length is 2.81 Å. The Eu(1)-Cl(4) bond length is 2.75 Å. There are two shorter (2.81 Å) and two longer (2.87 Å) Eu(1)-Cl(2) bond lengths. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 5-coordinate geometry to four equivalent Rb(1) and one Eu(1) atom. In the second Cl site, Cl(2) is bonded in a 4-coordinate geometry to two equivalent Rb(1) and two equivalent Eu(1) atoms. In the third Cl site, Cl(3) is bonded to four equivalent Rb(1) and one Eu(1) atom to form a mixture of distorted face, corner, and edge-sharing ClRb4Eu trigonal bipyramids. In the fourth Cl site, Cl(4) is bonded to four equivalent Rb(1) and one Eu(1) atom to form a mixture of distorted face, corner, and edge-sharing ClRb4Eu trigonal bipyramids.