KDy3F10 crystallizes in the cubic Fm-3m space group. K(1) is bonded in a distorted tetrahedral geometry to four equivalent F(2) atoms. Dy(1) is bonded in a 8-coordinate geometry to four equivalent F(1) and four equivalent F(2) atoms. There are two inequivalent F sites. In the first F site, F(1) is bonded in a bent 150 degrees geometry to two equivalent Dy(1) atoms. In the second F site, F(2) is bonded to one K(1) and three equivalent Dy(1) atoms to form a mixture of corner and edge-sharing FKDy3 tetrahedra.
KDy3F10 crystallizes in the cubic Fm-3m space group. K(1) is bonded in a distorted tetrahedral geometry to four equivalent F(2) atoms. All K(1)-F(2) bond lengths are 2.75 Å. Dy(1) is bonded in a 8-coordinate geometry to four equivalent F(1) and four equivalent F(2) atoms. All Dy(1)-F(1) bond lengths are 2.20 Å. All Dy(1)-F(2) bond lengths are 2.35 Å. There are two inequivalent F sites. In the first F site, F(1) is bonded in a bent 150 degrees geometry to two equivalent Dy(1) atoms. In the second F site, F(2) is bonded to one K(1) and three equivalent Dy(1) atoms to form a mixture of corner and edge-sharing FKDy3 tetrahedra.