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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Pb(IO3)2 by Materials Project

Pb(IO3)2 crystallizes in the orthorhombic Pbcn space group. The structure is two-dimensional and consists of two Pb(IO3)2 sheets oriented in the (0, 0, 1) direction. Pb2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Pb–O bond distances ranging from 2.44–2.97 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Pb2+ and one I5+ atom. The O–I bond length is 1.85 Å. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one I5+ atom. The O–I bond length is 1.84 Å. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Pb2+ and one I5+ atom. The O–I bond length is 1.86 Å. I5+ is bonded in a 6-coordinate geometry to three O2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pb3(IO)2 by Materials Project

Pb3I2O2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are three inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a distorted L-shaped geometry to two equivalent O2- and four I1- atoms. Both Pb–O bond lengths are 2.32 Å. There are a spread of Pb–I bond distances ranging from 3.24–3.57 Å. In the second Pb2+ site, Pb2+ is bonded in a 4-coordinate geometry to four equivalent O2- and three equivalent I1- atoms. There are two shorter (2.45 Å) and two longer (2.49 Å) Pb–O bond lengths. There are two shorter (3.68 Å) and one longer (3.86 Å) Pb–I bond lengths. In the third Pb2+ site, Pb2+ is bonded in a distorted L-shaped geometry to two equivalent O2- and three equivalent I1- atoms. Both Pb–O bond lengths are 2.27 Å. There are one shorter (3.24 Å) and two longer (3.93 Å) Pb–I bond lengths. O2- is bonded to four Pb2+ atoms to form a mixture of edge and corner-sharing OPb4 tetrahedra. There are two inequivalent I1- sites. In the first I1- site, I1- is bonded in a 2-coordinate geometry to seven Pb2+ atoms. In the second I1- site, I1- is bonded in a 3-coordinate geometry to three equivalent Pb2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Pb(IO3)2 by Materials Project

Pb(IO3)2 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are two inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Pb–O bond distances ranging from 2.57–2.84 Å. In the second Pb2+ site, Pb2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Pb–O bond distances ranging from 2.43–3.10 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Pb2+ and one I5+ atom. The O–I bond length is 1.84 Å. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Pb2+ and one I5+ atom. The O–I bond length is 1.84 Å. In the third O2- site, O2- is bonded in a distorted single-bond geometry to two Pb2+ and one I5+ atom. The O–I bond length is 1.84 Å. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to one Pb2+ and one I5+ atom. The O–I bond length is 1.84 Å. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to one Pb2+ and one I5+ atom. The O–I bond length is 1.85 Å. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to one Pb2+ and one I5+ atom. The O–I bond length is 1.85 Å. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Pb2+ and one I5+ atom. The O–I bond length is 1.82 Å. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Pb2+ and one I5+ atom. The O–I bond length is 1.85 Å. In the ninth O2- site, O2- is bonded in a 1-coordinate geometry to one Pb2+ and one I5+ atom. The O–I bond length is 1.85 Å. In the tenth O2- site, O2- is bonded in a 1-coordinate geometry to one Pb2+ and one I5+ atom. The O–I bond length is 1.83 Å. In the eleventh O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Pb2+ and one I5+ atom. The O–I bond length is 1.83 Å. In the twelfth O2- site, O2- is bonded in a distorted single-bond geometry to two Pb2+ and one I5+ atom. The O–I bond length is 1.85 Å. There are four inequivalent I5+ sites. In the first I5+ site, I5+ is bonded in a 3-coordinate geometry to three 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↗