KPu2F9 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 6-coordinate geometry to two equivalent F(2), two equivalent F(3), and two equivalent F(5) atoms. Pu(1) is bonded in a 9-coordinate geometry to one F(4), two equivalent F(1), two equivalent F(2), two equivalent F(3), and two equivalent F(5) atoms. There are five inequivalent F sites. In the first F site, F(4) is bonded in a linear geometry to two equivalent Pu(1) atoms. In the second F site, F(5) is bonded in a distorted trigonal non-coplanar geometry to one K(1) and two equivalent Pu(1) atoms. In the third F site, F(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Pu(1) atoms. In the fourth F site, F(2) is bonded in a trigonal planar geometry to one K(1) and two equivalent Pu(1) atoms. In the fifth F site, F(3) is bonded in a trigonal planar geometry to one K(1) and two equivalent Pu(1) atoms.
KPu2F9 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 6-coordinate geometry to two equivalent F(2), two equivalent F(3), and two equivalent F(5) atoms. Both K(1)-F(2) bond lengths are 2.64 Å. Both K(1)-F(3) bond lengths are 2.60 Å. Both K(1)-F(5) bond lengths are 2.70 Å. Pu(1) is bonded in a 9-coordinate geometry to one F(4), two equivalent F(1), two equivalent F(2), two equivalent F(3), and two equivalent F(5) atoms. The Pu(1)-F(4) bond length is 2.28 Å. There is one shorter (2.31 Å) and one longer (2.32 Å) Pu(1)-F(1) bond length. There is one shorter (2.28 Å) and one longer (2.29 Å) Pu(1)-F(2) bond length. There is one shorter (2.27 Å) and one longer (2.31 Å) Pu(1)-F(3) bond length. There is one shorter (2.31 Å) and one longer (2.35 Å) Pu(1)-F(5) bond length. There are five inequivalent F sites. In the first F site, F(4) is bonded in a linear geometry to two equivalent Pu(1) atoms. In the second F site, F(5) is bonded in a distorted trigonal non-coplanar geometry to one K(1) and two equivalent Pu(1) atoms. In the third F site, F(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Pu(1) atoms. In the fourth F site, F(2) is bonded in a trigonal planar geometry to one K(1) and two equivalent Pu(1) atoms. In the fifth F site, F(3) is bonded in a trigonal planar geometry to one K(1) and two equivalent Pu(1) atoms.