Materials Data on K3Na2InO4 by Materials Project
K3Na2InO4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of K–O bond distances ranging from 2.79–3.03 Å. In the second K1+ site, K1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of K–O bond distances ranging from 2.64–3.17 Å. In the third K1+ site, K1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of K–O bond distances ranging from 2.68–3.18 Å. There are two inequivalent Na1+ sites. In the first Na1+ site, Na1+ is bonded to four O2- atoms to form distorted NaO4 tetrahedra that share corners with two equivalent InO4 tetrahedra and an edgeedge with one InO4 tetrahedra. There are a spread of Na–O bond distances ranging from 2.29–2.51 Å. In the second Na1+ site, Na1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Na–O bond distances ranging from 2.29–2.61 Å. In3+ is bonded to four O2- atoms to form InO4 tetrahedra that share corners with two equivalent NaO4 tetrahedra and an edgeedge with one NaO4 tetrahedra. There are a spread of In–O bond distances ranging from 2.10–2.13 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 5-coordinate geometry to three K1+, two Na1+, and one In3+ atom. In the second O2- site, O2- is bonded in a 7-coordinate geometry to four K1+, two Na1+, and one In3+ atom. In the third O2- site, O2- is bonded in a 7-coordinate geometry to four K1+, two Na1+, and one In3+ atom. In the fourth O2- site, O2- is bonded in a 7-coordinate geometry to four K1+, two Na1+, and one In3+ atom.