Materials Data on CsLu(NbCl3)6 by Materials Project
CsLuNb6Cl18 crystallizes in the trigonal P-31c space group. The structure is three-dimensional. Cs1+ is bonded in a 12-coordinate geometry to twelve Cl1- atoms. There are six shorter (3.90 Å) and six longer (3.91 Å) Cs–Cl bond lengths. Lu3+ is bonded to six equivalent Cl1- atoms to form LuCl6 octahedra that share corners with six equivalent NbCl5 square pyramids. All Lu–Cl bond lengths are 2.63 Å. Nb+2.33+ is bonded to five Cl1- atoms to form NbCl5 square pyramids that share a cornercorner with one LuCl6 octahedra and corners with four equivalent NbCl5 square pyramids. The corner-sharing octahedral tilt angles are 43°. There are a spread of Nb–Cl bond distances ranging from 2.46–2.75 Å. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 2-coordinate geometry to one Cs1+, one Lu3+, and one Nb+2.33+ atom. In the second Cl1- site, Cl1- is bonded in a 2-coordinate geometry to two equivalent Nb+2.33+ atoms. In the third Cl1- site, Cl1- is bonded in a 2-coordinate geometry to one Cs1+ and two equivalent Nb+2.33+ atoms.