DOI: 10.17188/1662635
title: Materials Data on FeH7SO8 by Materials Project

description: Fe2H8S2O13(H2O)3 crystallizes in the triclinic P-1 space group. The structure is one-dimensional and consists of six water molecules and one Fe2H8S2O13 ribbon oriented in the (1, 0, 0) direction. In the Fe2H8S2O13 ribbon, there are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with two equivalent FeO6 octahedra, corners with three SO4 tetrahedra, and an edgeedge with one FeO6 octahedra. The corner-sharing octahedra tilt angles range from 49–51°. There are a spread of Fe–O bond distances ranging from 1.95–2.11 Å. In the second Fe3+ site, Fe3+ is bonded to six O2- atoms to form FeO6 octahedra that share corners with two equivalent FeO6 octahedra and corners with two SO4 tetrahedra. The corner-sharing octahedra tilt angles range from 49–51°. There are a spread of Fe–O bond distances ranging from 1.95–2.08 Å. There are eight 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 distorted single-bond geometry to one O2- atom. The H–O bond length is 1.01 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.01 Å. In the fifth 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 sixth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the seventh 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 eighth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. There are two inequivalent S6+ sites. In the first S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share corners with two FeO6 octahedra. The corner-sharing octahedra tilt angles range from 43–45°. There are a spread of S–O bond distances ranging from 1.47–1.52 Å. In the second S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share corners with three FeO6 octahedra. The corner-sharing octahedra tilt angles range from 36–49°. There are a spread of S–O bond distances ranging from 1.46–1.51 Å. There are thirteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Fe3+ and one S6+ atom. In the second O2- site, O2- is bonded in a distorted water-like geometry to one Fe3+ and two H1+ atoms. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+ and one S6+ atom. In the fourth O2- site, O2- is bonded in a distorted water-like geometry to one Fe3+ and two H1+ atoms. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+ and one S6+ atom. In the sixth O2- site, O2- is bonded in a single-bond geometry to one S6+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one S6+ atom. In the eighth O2- site, O2- is bonded in a single-bond geometry to one S6+ atom. In the ninth O2- site, O2- is bonded in a distorted water-like geometry to one Fe3+ and two H1+ atoms. In the tenth O2- site, O2- is bonded in a distorted trigonal planar geometry to three Fe3+ atoms. In the eleventh O2- site, O2- is bonded in a bent 150 degrees geometry to one Fe3+ and one S6+ atom. In the twelfth O2- site, O2- is bonded in a distorted water-like geometry to one Fe3+ and two H1+ atoms. In the thirteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe3+ and one S6+ atom.