Materials Data on K4Na2TeO6 by Materials Project
K4Na2TeO6 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of K–O bond distances ranging from 2.67–3.18 Å. In the second K1+ site, K1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of K–O bond distances ranging from 2.72–2.89 Å. Na1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Na–O bond distances ranging from 2.26–2.75 Å. Te6+ is bonded in an octahedral geometry to six O2- atoms. There is two shorter (1.99 Å) and four longer (2.00 Å) Te–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to four K1+, two equivalent Na1+, and one Te6+ atom. In the second O2- site, O2- is bonded in a 6-coordinate geometry to four K1+, one Na1+, and one Te6+ atom. In the third O2- site, O2- is bonded in a 7-coordinate geometry to four K1+, two equivalent Na1+, and one Te6+ atom.