Materials Data on KNaSb by Materials Project
NaKSb is half-Heusler structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. K1+ is bonded in a distorted q6 geometry to four equivalent Na1+ and six equivalent Sb2- atoms. All K–Na bond lengths are 3.31 Å. All K–Sb bond lengths are 3.83 Å. Na1+ is bonded in a distorted body-centered cubic geometry to four equivalent K1+ and four equivalent Sb2- atoms. All Na–Sb bond lengths are 3.31 Å. Sb2- is bonded in a 4-coordinate geometry to six equivalent K1+ and four equivalent Na1+ atoms.
36 MATERIALS SCIENCE↗