DOI: 10.17188/1740127
title: Materials Data on FeAs2S4(O2F3)4 by Materials Project

description: FeAs2S4(O2F3)4 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four FeAs2S4(O2F3)4 clusters. Fe2+ is bonded to four O2- and two F1- atoms to form FeO4F2 octahedra that share corners with two AsF6 octahedra. The corner-sharing octahedra tilt angles range from 23–31°. There are a spread of Fe–O bond distances ranging from 2.12–2.17 Å. There are one shorter (2.05 Å) and one longer (2.11 Å) Fe–F bond lengths. There are two inequivalent As5+ sites. In the first As5+ site, As5+ is bonded to six F1- atoms to form AsF6 octahedra that share a cornercorner with one FeO4F2 octahedra. The corner-sharing octahedral tilt angles are 23°. There are a spread of As–F bond distances ranging from 1.75–1.88 Å. In the second As5+ site, As5+ is bonded to six F1- atoms to form AsF6 octahedra that share a cornercorner with one FeO4F2 octahedra. The corner-sharing octahedral tilt angles are 31°. There are a spread of As–F bond distances ranging from 1.75–1.84 Å. There are four inequivalent S4+ sites. In the first S4+ site, S4+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.44 Å) and one longer (1.47 Å) S–O bond length. In the second S4+ site, S4+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.44 Å) and one longer (1.47 Å) S–O bond length. In the third S4+ site, S4+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.44 Å) and one longer (1.46 Å) S–O bond length. In the fourth S4+ site, S4+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.44 Å) and one longer (1.46 Å) S–O bond length. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe2+ and one S4+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one S4+ atom. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe2+ and one S4+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one S4+ atom. In the fifth O2- site, O2- is bonded in a distorted linear geometry to one Fe2+ and one S4+ atom. In the sixth O2- site, O2- is bonded in a single-bond geometry to one S4+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Fe2+ and one S4+ atom. In the eighth O2- site, O2- is bonded in a single-bond geometry to one S4+ atom. There are twelve inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the second F1- site, F1- is bonded in a bent 150 degrees geometry to one Fe2+ and one As5+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the fifth F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the sixth F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the seventh F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the eighth F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the ninth F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the tenth F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the eleventh F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the twelfth F1- site, F1- is bonded in a bent 150 degrees geometry to one Fe2+ and one As5+ atom.