KBa4Bi3O crystallizes in the tetragonal I4/mcm space group. K(1) is bonded in a square co-planar geometry to four equivalent Bi(1) atoms. Ba(1) is bonded in a single-bond geometry to two equivalent Bi(2), three equivalent Bi(1), and one O(1) atom. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 9-coordinate geometry to two equivalent K(1), six equivalent Ba(1), and one Bi(1) atom. In the second Bi site, Bi(2) is bonded in a 8-coordinate geometry to eight equivalent Ba(1) atoms. O(1) is bonded in a tetrahedral geometry to four equivalent Ba(1) atoms.
KBa4Bi3O crystallizes in the tetragonal I4/mcm space group. K(1) is bonded in a square co-planar geometry to four equivalent Bi(1) atoms. All K(1)-Bi(1) bond lengths are 3.64 Å. Ba(1) is bonded in a single-bond geometry to two equivalent Bi(2), three equivalent Bi(1), and one O(1) atom. Both Ba(1)-Bi(2) bond lengths are 3.81 Å. There are two shorter (3.66 Å) and one longer (3.92 Å) Ba(1)-Bi(1) bond length. The Ba(1)-O(1) bond length is 2.57 Å. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 9-coordinate geometry to two equivalent K(1), six equivalent Ba(1), and one Bi(1) atom. The Bi(1)-Bi(1) bond length is 3.11 Å. In the second Bi site, Bi(2) is bonded in a 8-coordinate geometry to eight equivalent Ba(1) atoms. O(1) is bonded in a tetrahedral geometry to four equivalent Ba(1) atoms.