Materials Data on K2GdCl5 by Materials Project

Abstract

K2GdCl5 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 3.21–3.46 Å. Gd3+ is bonded to seven Cl1- atoms to form distorted edge-sharing GdCl7 pentagonal bipyramids. There are a spread of Gd–Cl bond distances ranging from 2.71–2.81 Å. There are four inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 5-coordinate geometry to four equivalent K1+ and one Gd3+ atom. In the second Cl1- site, Cl1- is bonded in a 4-coordinate geometry to two equivalent K1+ and two equivalent Gd3+ atoms. In the third Cl1- site, Cl1- is bonded to four equivalent K1+ and one Gd3+ atom to form a mixture of distorted corner, edge, and face-sharing ClK4Gd trigonal bipyramids. In the fourth Cl1- site, Cl1- is bonded to four equivalent K1+ and one Gd3+ atom to form a mixture of distorted corner, edge, and face-sharing ClK4Gd trigonal bipyramids.