KK2Ge17 crystallizes in the cubic Fd-3m space group. The structure consists of eight 7440-09-7 atoms inside a K2Ge17 framework. In the K2Ge17 framework, K(1) is bonded in a 20-coordinate geometry to two equivalent Ge(1), six equivalent Ge(2), and twelve equivalent Ge(3) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a body-centered cubic geometry to four equivalent K(1) and four equivalent Ge(2) atoms. In the second Ge site, Ge(2) is bonded in a 7-coordinate geometry to three equivalent K(1), one Ge(1), and three equivalent Ge(3) atoms. In the third Ge site, Ge(3) is bonded in a 6-coordinate geometry to two equivalent K(1), one Ge(2), and three equivalent Ge(3) atoms.
KK2Ge17 crystallizes in the cubic Fd-3m space group. The structure consists of eight 7440-09-7 atoms inside a K2Ge17 framework. In the K2Ge17 framework, K(1) is bonded in a 20-coordinate geometry to two equivalent Ge(1), six equivalent Ge(2), and twelve equivalent Ge(3) atoms. Both K(1)-Ge(1) bond lengths are 3.40 Å. All K(1)-Ge(2) bond lengths are 3.50 Å. All K(1)-Ge(3) bond lengths are 3.60 Å. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a body-centered cubic geometry to four equivalent K(1) and four equivalent Ge(2) atoms. All Ge(1)-Ge(2) bond lengths are 2.56 Å. In the second Ge site, Ge(2) is bonded in a 7-coordinate geometry to three equivalent K(1), one Ge(1), and three equivalent Ge(3) atoms. All Ge(2)-Ge(3) bond lengths are 2.53 Å. In the third Ge site, Ge(3) is bonded in a 6-coordinate geometry to two equivalent K(1), one Ge(2), and three equivalent Ge(3) atoms. There are two shorter (2.51 Å) and one longer (2.56 Å) Ge(3)-Ge(3) bond length.