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Materials Data on RbIO4 by Materials Project

RbIO4 is Zircon-like structured and crystallizes in the tetragonal I4_1/a space group. The structure is three-dimensional. Rb is bonded in a 8-coordinate geometry to eight equivalent O atoms. There are four shorter (2.99 Å) and four longer (3.05 Å) Rb–O bond lengths. O is bonded in a 1-coordinate geometry to two equivalent Rb and one I atom. The O–I bond length is 1.80 Å. I is bonded in a tetrahedral geometry to four equivalent O atoms.

36 MATERIALS SCIENCE↗

Materials Data on RbIO3 by Materials Project

RbO3I crystallizes in the trigonal R3m space group. The structure is three-dimensional. Rb1+ is bonded in a 12-coordinate geometry to twelve equivalent O2- atoms. There are a spread of Rb–O bond distances ranging from 3.12–3.56 Å. O2- is bonded in a distorted single-bond geometry to four equivalent Rb1+ and one I5+ atom. The O–I bond length is 1.84 Å. I5+ is bonded in a 6-coordinate geometry to three equivalent O2- atoms.

36 MATERIALS SCIENCE↗

Materials Data on Rb4I2O by Materials Project

Rb4OI2 is (La,Ba)CuO4 structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a distorted linear geometry to two equivalent O2- and four equivalent I1- atoms. Both Rb–O bond lengths are 2.83 Å. All Rb–I bond lengths are 3.91 Å. In the second Rb1+ site, Rb1+ is bonded in a distorted single-bond geometry to one O2- and five equivalent I1- atoms. The Rb–O bond length is 2.72 Å. There are one shorter (3.87 Å) and four longer (4.00 Å) Rb–I bond lengths. O2- is bonded to six Rb1+ atoms to form corner-sharing ORb6 octahedra. The corner-sharing octahedral tilt angles are 0°. I1- is bonded in a 9-coordinate geometry to nine Rb1+ atoms.

36 MATERIALS SCIENCE↗