Materials Data on RbPrF4 by Materials Project
RbPrF4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Rb1+ is bonded in a 7-coordinate geometry to seven F1- atoms. There are a spread of Rb–F bond distances ranging from 2.76–2.90 Å. Pr3+ is bonded in a 9-coordinate geometry to nine F1- atoms. There are a spread of Pr–F bond distances ranging from 2.33–2.57 Å. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded to two equivalent Rb1+ and two equivalent Pr3+ atoms to form distorted FRb2Pr2 tetrahedra that share corners with ten FRb2Pr2 tetrahedra and an edgeedge with one FRbPr3 tetrahedra. In the second F1- site, F1- is bonded in a distorted trigonal non-coplanar geometry to three equivalent Pr3+ atoms. In the third F1- site, F1- is bonded to one Rb1+ and three equivalent Pr3+ atoms to form FRbPr3 tetrahedra that share corners with eight FRb2Pr2 tetrahedra and edges with three FRbPr3 tetrahedra. In the fourth F1- site, F1- is bonded in a 1-coordinate geometry to four equivalent Rb1+ and one Pr3+ atom.