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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on NaBi3(IO2)2 by Materials Project

NaBi3(O2I)2 crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. Na1+ is bonded in a 4-coordinate geometry to four equivalent O2- and four I1- atoms. All Na–O bond lengths are 2.42 Å. There are two shorter (3.57 Å) and two longer (3.62 Å) Na–I bond lengths. There are three inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a 4-coordinate geometry to four equivalent O2- and four I1- atoms. All Bi–O bond lengths are 2.26 Å. There are two shorter (3.62 Å) and two longer (3.66 Å) Bi–I bond lengths. In the second Bi3+ site, Bi3+ is bonded in a 4-coordinate geometry to four equivalent O2- and four I1- atoms. All Bi–O bond lengths are 2.29 Å. There are two shorter (3.63 Å) and two longer (3.67 Å) Bi–I bond lengths. In the third Bi3+ site, Bi3+ is bonded in a 4-coordinate geometry to four equivalent O2- and four I1- atoms. All Bi–O bond lengths are 2.29 Å. There are two shorter (3.62 Å) and two longer (3.66 Å) Bi–I bond lengths. O2- is bonded to one Na1+ and three Bi3+ atoms to form a mixture of edge and corner-sharing ONaBi3 tetrahedra. There are two inequivalent I1- sites. In the first I1- site, I1- is bonded in a distorted body-centered cubic geometry to two equivalent Na1+ and six Bi3+ atoms. In the second I1- site, I1- is bonded in a distorted body-centered cubic geometry to two equivalent Na1+ and six Bi3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrAg2(IO2)4 by Materials Project

SrAg2(O2I)4 crystallizes in the tetragonal I422 space group. The structure is three-dimensional. Sr2+ is bonded in a body-centered cubic geometry to eight equivalent O2- atoms. All Sr–O bond lengths are 2.59 Å. Ag3+ is bonded in a distorted square co-planar geometry to four equivalent O2- atoms. All Ag–O bond lengths are 2.38 Å. O2- is bonded to one Sr2+, one Ag3+, and two equivalent I2+ atoms to form a mixture of distorted edge and corner-sharing OSrAgI2 tetrahedra. There are one shorter (1.99 Å) and one longer (2.44 Å) O–I bond lengths. I2+ is bonded in a square co-planar geometry to four equivalent O2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrCd(IO2)4 by Materials Project

SrCd(O2I)4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Sr is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of Sr–O bond distances ranging from 2.48–2.93 Å. There are two inequivalent Cd sites. In the first Cd site, Cd is bonded in a 4-coordinate geometry to two equivalent O and two equivalent I atoms. Both Cd–O bond lengths are 2.28 Å. There are one shorter (2.74 Å) and one longer (2.80 Å) Cd–I bond lengths. In the second Cd site, Cd is bonded in a 4-coordinate geometry to two equivalent O and two equivalent I atoms. Both Cd–O bond lengths are 2.29 Å. There are one shorter (2.75 Å) and one longer (2.84 Å) Cd–I bond lengths. There are eight inequivalent O sites. In the first O site, O is bonded in a 3-coordinate geometry to two equivalent Sr and one I atom. The O–I bond length is 1.85 Å. In the second O site, O is bonded in an L-shaped geometry to one Sr and one I atom. The O–I bond length is 1.87 Å. In the third O site, O is bonded in a distorted water-like geometry to one Cd and two I atoms. There are one shorter (1.93 Å) and one longer (2.67 Å) O–I bond lengths. In the fourth O site, O is bonded in a distorted T-shaped geometry to one Sr and two I atoms. There are one shorter (1.90 Å) and one longer (2.53 Å) O–I bond lengths. In the fifth O site, O is bonded in a 3-coordinate geometry to one Cd and two I atoms. There are one shorter (1.95 Å) and one longer (2.51 Å) O–I bond lengths. In the sixth O site, O is bonded in a 2-coordinate geometry to one Sr and two I atoms. There are one shorter (1.87 Å) and one longer (2.66 Å) O–I bond lengths. In the seventh O site, O is bonded in a 3-coordinate geometry to two equivalent Sr and one O atom. The O–O bond length is 1.38 Å. In the eighth O site, O is bonded in a single-bond geometry to one I atom. The O–I bond length is 1.81 Å. There are six inequivalent I sites. In the first I site, I is bonded in a distorted L-shaped geometry to four O atoms. In the second I site, I is bonded in a 3-coordinate geometry to three O atoms. In the third I site, I is bonded in a water-like geometry to two equivalent Cd atoms. In the fourth I site, I is bonded in a distorted rectangular see-saw-like geometry to four O atoms. In the fifth I site, I is bonded in a water-like geometry to two equivalent Cd atoms. In the sixth I site, I is bonded in a 4-coordinate geometry to four O atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on La2Si(IO2)2 by Materials Project

La2Si(O2I)2 crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of two La2Si(O2I)2 sheets oriented in the (0, 0, 1) direction. there are four inequivalent La3+ sites. In the first La3+ site, La3+ is bonded in a 8-coordinate geometry to five O2- and three I1- atoms. There are a spread of La–O bond distances ranging from 2.39–2.66 Å. There are a spread of La–I bond distances ranging from 3.33–3.39 Å. In the second La3+ site, La3+ is bonded in a 8-coordinate geometry to five O2- and three I1- atoms. There are a spread of La–O bond distances ranging from 2.41–2.67 Å. There are two shorter (3.33 Å) and one longer (3.38 Å) La–I bond lengths. In the third La3+ site, La3+ is bonded in a 9-coordinate geometry to seven O2- and two I1- atoms. There are a spread of La–O bond distances ranging from 2.40–2.96 Å. There are one shorter (3.31 Å) and one longer (3.49 Å) La–I bond lengths. In the fourth La3+ site, La3+ is bonded in a 9-coordinate geometry to seven O2- and two I1- atoms. There are a spread of La–O bond distances ranging from 2.41–2.98 Å. There are one shorter (3.29 Å) and one longer (3.50 Å) La–I bond lengths. There are two inequivalent Si4+ sites. In the first Si4+ site, Si4+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Si–O bond distances ranging from 1.63–1.66 Å. In the second Si4+ site, Si4+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Si–O bond distances ranging from 1.63–1.66 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to three La3+ and one Si4+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to three La3+ and one Si4+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to three La3+ and one Si4+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to three La3+ and one Si4+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to three La3+ and one Si4+ atom. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to three La3+ and one Si4+ atom. In the seventh O2- site, O2- is bonded in a 1-coordinate geometry to three La3+ and one Si4+ atom. In the eighth O2- site, O2- is bonded in a 1-coordinate geometry to three La3+ and one Si4+ atom. There are four inequivalent I1- sites. In the first I1- site, I1- is bonded in a 2-coordinate geometry to two La3+ atoms. In the second I1- site, I1- is bonded in a 2-coordinate geometry to two La3+ atoms. In the third I1- site, I1- is bonded in a 3-coordinate geometry to three La3+ atoms. In the fourth I1- site, I1- is bonded in a 3-coordinate geometry to three La3+ atoms.

36 MATERIALS SCIENCE↗