Materials Data on K2AgF4 by Materials Project

Abstract

K2AgF4 is Orthorhombic Perovskite-like structured and crystallizes in the orthorhombic Cmce space group. The structure is three-dimensional. K1+ is bonded in a 8-coordinate geometry to eight F1- atoms. There are a spread of K–F bond distances ranging from 2.60–3.11 Å. Ag2+ is bonded to six F1- atoms to form corner-sharing AgF6 octahedra. The corner-sharing octahedral tilt angles are 17°. There are two shorter (2.17 Å) and four longer (2.26 Å) Ag–F bond lengths. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a 6-coordinate geometry to four equivalent K1+ and two equivalent Ag2+ atoms. In the second F1- site, F1- is bonded in a 5-coordinate geometry to four equivalent K1+ and one Ag2+ atom.