Materials Data on SmH4I3O11 by Materials Project

Abstract

SmH2O10I3H2O crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of two water molecules and one SmH2O10I3 sheet oriented in the (0, 1, 0) direction. In the SmH2O10I3 sheet, Sm3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sm–O bond distances ranging from 2.43–2.47 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. There are ten inequivalent O2- sites. In the first 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 second O2- site, O2- is bonded in a distorted water-like geometry to one Sm3+ and two H1+ atoms. In the third O2- site, O2- is bonded in a 2-coordinate geometry to one Sm3+ and one I5+ atom. The O–I bond length is 1.84 Å. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one Sm3+ and one I5+ atom. The O–I bond length is 1.84 Å. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sm3+ and one I5+ atom. The O–I bond length is 1.84 Å. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to one Sm3+ and one I5+ atom. The O–I bond length is 1.84 Å. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one I5+ atom. The O–I bond length is 1.85 Å. In the eighth O2- site, O2- is bonded in a bent 120 degrees geometry to one Sm3+ and one I5+ atom. The O–I bond length is 1.82 Å. In the ninth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Sm3+ and one I5+ atom. The O–I bond length is 1.85 Å. In the tenth O2- site, O2- is bonded in a bent 120 degrees geometry to one Sm3+ and one I5+ atom. The O–I bond length is 1.84 Å. There are three inequivalent I5+ sites. In the first I5+ site, I5+ is bonded in a 6-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.