Materials Data on K2PrCl5 by Materials Project
K2PrCl5 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. K1+ is bonded in a 8-coordinate geometry to eight Cl1- atoms. There are a spread of K–Cl bond distances ranging from 3.22–3.42 Å. Pr3+ is bonded to seven Cl1- atoms to form distorted edge-sharing PrCl7 pentagonal bipyramids. There are a spread of Pr–Cl bond distances ranging from 2.80–2.89 Å. There are four inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 4-coordinate geometry to two equivalent K1+ and two equivalent Pr3+ atoms. In the second Cl1- site, Cl1- is bonded to four equivalent K1+ and one Pr3+ atom to form a mixture of distorted face, edge, and corner-sharing ClK4Pr trigonal bipyramids. In the third Cl1- site, Cl1- is bonded to four equivalent K1+ and one Pr3+ atom to form a mixture of distorted face, edge, and corner-sharing ClK4Pr trigonal bipyramids. In the fourth Cl1- site, Cl1- is bonded in a 5-coordinate geometry to four equivalent K1+ and one Pr3+ atom.