Cs2PrCl5 crystallizes in the orthorhombic Pnma space group. Cs(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. Pr(1) is bonded to one Cl(1), one Cl(3), one Cl(4), and four equivalent Cl(2) atoms to form distorted edge-sharing PrCl7 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 Cs(1) and one Pr(1) atom. In the second Cl site, Cl(2) is bonded in a 2-coordinate geometry to two equivalent Cs(1) and two equivalent Pr(1) atoms. In the third Cl site, Cl(3) is bonded to four equivalent Cs(1) and one Pr(1) atom to form a mixture of distorted corner, edge, and face-sharing ClCs4Pr trigonal bipyramids. In the fourth Cl site, Cl(4) is bonded to four equivalent Cs(1) and one Pr(1) atom to form a mixture of distorted corner, edge, and face-sharing ClCs4Pr trigonal bipyramids.
Cs2PrCl5 crystallizes in the orthorhombic Pnma space group. Cs(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 (3.52 Å) and one longer (3.61 Å) Cs(1)-Cl(1) bond length. There is one shorter (3.74 Å) and one longer (3.75 Å) Cs(1)-Cl(2) bond length. There is one shorter (3.43 Å) and one longer (3.49 Å) Cs(1)-Cl(3) bond length. There is one shorter (3.44 Å) and one longer (3.46 Å) Cs(1)-Cl(4) bond length. Pr(1) is bonded to one Cl(1), one Cl(3), one Cl(4), and four equivalent Cl(2) atoms to form distorted edge-sharing PrCl7 pentagonal bipyramids. The Pr(1)-Cl(1) bond length is 2.78 Å. The Pr(1)-Cl(3) bond length is 2.80 Å. The Pr(1)-Cl(4) bond length is 2.79 Å. There are two shorter (2.89 Å) and two longer (2.92 Å) Pr(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 Cs(1) and one Pr(1) atom. In the second Cl site, Cl(2) is bonded in a 2-coordinate geometry to two equivalent Cs(1) and two equivalent Pr(1) atoms. In the third Cl site, Cl(3) is bonded to four equivalent Cs(1) and one Pr(1) atom to form a mixture of distorted corner, edge, and face-sharing ClCs4Pr trigonal bipyramids. In the fourth Cl site, Cl(4) is bonded to four equivalent Cs(1) and one Pr(1) atom to form a mixture of distorted corner, edge, and face-sharing ClCs4Pr trigonal bipyramids.