Materials Data on K5Bi4 by Materials Project
K5Bi4 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are five inequivalent K sites. In the first K site, K is bonded in a 6-coordinate geometry to six Bi atoms. There are a spread of K–Bi bond distances ranging from 3.83–3.88 Å. In the second K site, K is bonded in a 6-coordinate geometry to six Bi atoms. There are a spread of K–Bi bond distances ranging from 3.80–3.93 Å. In the third K site, K is bonded in a 7-coordinate geometry to seven Bi atoms. There are a spread of K–Bi bond distances ranging from 3.75–3.88 Å. In the fourth K site, K is bonded in a 7-coordinate geometry to seven Bi atoms. There are a spread of K–Bi bond distances ranging from 3.77–3.87 Å. In the fifth K site, K is bonded in a distorted square co-planar geometry to four Bi atoms. There are two shorter (3.61 Å) and two longer (3.64 Å) K–Bi bond lengths. There are four inequivalent Bi sites. In the first Bi site, Bi is bonded in a 9-coordinate geometry to eight K and one Bi atom. The Bi–Bi bond length is 3.01 Å. In the second Bi site, Bi is bonded in a 9-coordinate geometry to eight K and one Bi atom. The Bi–Bi bond length is 3.01 Å. In the third Bi site, Bi is bonded in a 9-coordinate geometry to seven K and two Bi atoms. The Bi–Bi bond length is 3.04 Å. In the fourth Bi site, Bi is bonded in a 9-coordinate geometry to seven K and two Bi atoms.