Cs2AgF4 is (La,Ba)CuO4-like structured and crystallizes in the orthorhombic Cmce space group. Cs(1) is bonded in a 9-coordinate geometry to four equivalent F(2) and five equivalent F(1) atoms. Ag(1) is bonded to two equivalent F(1) and four equivalent F(2) atoms to form corner-sharing AgF6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent F sites. In the first F site, F(1) is bonded to five equivalent Cs(1) and one Ag(1) atom to form distorted FCs5Ag octahedra that share corners with five equivalent F(1)Cs5Ag octahedra, corners with twelve equivalent F(2)Cs4Ag2 octahedra, edges with eight equivalent F(1)Cs5Ag octahedra, and faces with four equivalent F(2)Cs4Ag2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the second F site, F(2) is bonded to four equivalent Cs(1) and two equivalent Ag(1) atoms to form distorted FCs4Ag2 octahedra that share corners with two equivalent F(2)Cs4Ag2 octahedra, corners with twelve equivalent F(1)Cs5Ag octahedra, edges with two equivalent F(2)Cs4Ag2 octahedra, faces with four equivalent F(2)Cs4Ag2 octahedra, and faces with four equivalent F(1)Cs5Ag octahedra. The corner-sharing octahedral tilt angles range from 0-60°.
Cs2AgF4 is (La,Ba)CuO4-like structured and crystallizes in the orthorhombic Cmce space group. Cs(1) is bonded in a 9-coordinate geometry to four equivalent F(2) and five equivalent F(1) atoms. There are two shorter (3.06 Å) and two longer (3.07 Å) Cs(1)-F(2) bond lengths. There is one shorter (2.96 Å) and four longer (3.22 Å) Cs(1)-F(1) bond lengths. Ag(1) is bonded to two equivalent F(1) and four equivalent F(2) atoms to form corner-sharing AgF6 octahedra. The corner-sharing octahedra are not tilted. Both Ag(1)-F(1) bond lengths are 2.13 Å. There are two shorter (2.11 Å) and two longer (2.44 Å) Ag(1)-F(2) bond lengths. There are two inequivalent F sites. In the first F site, F(1) is bonded to five equivalent Cs(1) and one Ag(1) atom to form distorted FCs5Ag octahedra that share corners with five equivalent F(1)Cs5Ag octahedra, corners with twelve equivalent F(2)Cs4Ag2 octahedra, edges with eight equivalent F(1)Cs5Ag octahedra, and faces with four equivalent F(2)Cs4Ag2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the second F site, F(2) is bonded to four equivalent Cs(1) and two equivalent Ag(1) atoms to form distorted FCs4Ag2 octahedra that share corners with two equivalent F(2)Cs4Ag2 octahedra, corners with twelve equivalent F(1)Cs5Ag octahedra, edges with two equivalent F(2)Cs4Ag2 octahedra, faces with four equivalent F(2)Cs4Ag2 octahedra, and faces with four equivalent F(1)Cs5Ag octahedra. The corner-sharing octahedral tilt angles range from 0-60°.