KSc2F7 crystallizes in the orthorhombic Cmmm space group. K(1) is bonded in a 10-coordinate geometry to two equivalent F(1) and eight equivalent F(2) atoms. Sc(1) is bonded to one F(3), two equivalent F(1), and four equivalent F(2) atoms to form a mixture of edge and corner-sharing ScF7 pentagonal bipyramids. There are three inequivalent F sites. In the first F site, F(1) is bonded in a linear geometry to one K(1) and two equivalent Sc(1) atoms. In the second F site, F(2) is bonded to two equivalent K(1) and two equivalent Sc(1) atoms to form a mixture of distorted edge, face, and corner-sharing FK2Sc2 tetrahedra. In the third F site, F(3) is bonded in a linear geometry to two equivalent Sc(1) atoms.
KSc2F7 crystallizes in the orthorhombic Cmmm space group. K(1) is bonded in a 10-coordinate geometry to two equivalent F(1) and eight equivalent F(2) atoms. Both K(1)-F(1) bond lengths are 3.14 Å. All K(1)-F(2) bond lengths are 2.82 Å. Sc(1) is bonded to one F(3), two equivalent F(1), and four equivalent F(2) atoms to form a mixture of edge and corner-sharing ScF7 pentagonal bipyramids. The Sc(1)-F(3) bond length is 2.05 Å. Both Sc(1)-F(1) bond lengths are 2.03 Å. There are two shorter (2.10 Å) and two longer (2.12 Å) Sc(1)-F(2) bond lengths. There are three inequivalent F sites. In the first F site, F(1) is bonded in a linear geometry to one K(1) and two equivalent Sc(1) atoms. In the second F site, F(2) is bonded to two equivalent K(1) and two equivalent Sc(1) atoms to form a mixture of distorted edge, face, and corner-sharing FK2Sc2 tetrahedra. In the third F site, F(3) is bonded in a linear geometry to two equivalent Sc(1) atoms.