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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on KAu(IO3)4 by Materials Project

KAu(O3I)4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.83–3.32 Å. Au3+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Au–O bond distances ranging from 2.01–2.03 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to one K1+ and one I5+ atom. The O–I bond length is 1.82 Å. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one K1+, one Au3+, and one I5+ atom. The O–I bond length is 1.91 Å. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one Au3+ and one I5+ atom. The O–I bond length is 1.94 Å. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+ and two I5+ atoms. There are one shorter (1.82 Å) and one longer (2.65 Å) O–I bond lengths. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+ and one I5+ atom. The O–I bond length is 1.82 Å. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+ and one I5+ atom. The O–I bond length is 1.81 Å. In the seventh O2- site, O2- is bonded in a 1-coordinate geometry to one K1+ and one I5+ atom. The O–I bond length is 1.83 Å. In the eighth O2- site, O2- is bonded in a distorted single-bond geometry to one I5+ atom. The O–I bond length is 1.82 Å. In the ninth O2- site, O2- is bonded in a 1-coordinate geometry to one K1+ and one I5+ atom. The O–I bond length is 1.83 Å. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Au3+, and one I5+ atom. The O–I bond length is 1.93 Å. In the eleventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one K1+, one Au3+, and one I5+ atom. The O–I bond length is 1.92 Å. In the twelfth O2- site, O2- is bonded in a distorted single-bond geometry to one I5+ atom. The O–I bond length is 1.83 Å. There are four inequivalent I5+ sites. In the first I5+ site, I5+ is bonded in a 3-coordinate geometry to four O2- atoms. In the second I5+ site, I5+ is bonded in a 3-coordinate geometry to three O2- atoms. In the third I5+ site, I5+ is bonded in a 3-coordinate geometry to three O2- atoms. In the fourth I5+ site, I5+ is bonded in a 3-coordinate geometry to three O2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K5Au(IO)2 by Materials Project

K5Au(OI)2 crystallizes in the orthorhombic Pbam space group. The structure is three-dimensional. there are three inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a distorted linear geometry to two equivalent O2- and four equivalent I1- atoms. Both K–O bond lengths are 2.80 Å. There are a spread of K–I bond distances ranging from 3.58–3.87 Å. In the second K1+ site, K1+ is bonded in a distorted linear geometry to two equivalent O2- and four equivalent I1- atoms. There are one shorter (2.70 Å) and one longer (2.76 Å) K–O bond lengths. There are two shorter (3.60 Å) and two longer (3.74 Å) K–I bond lengths. In the third K1+ site, K1+ is bonded in a distorted linear geometry to two equivalent O2- and four equivalent I1- atoms. Both K–O bond lengths are 2.82 Å. All K–I bond lengths are 3.66 Å. Au1+ is bonded in a linear geometry to two equivalent O2- atoms. Both Au–O bond lengths are 2.06 Å. O2- is bonded to five K1+ and one Au1+ atom to form corner-sharing OK5Au octahedra. The corner-sharing octahedra tilt angles range from 0–12°. I1- is bonded in a 10-coordinate geometry to ten K1+ atoms.

36 MATERIALS SCIENCE↗