Materials Data on Fe2AsSO14 by Materials Project
Fe2AsSO14 crystallizes in the monoclinic P2_1/c space group. The structure is one-dimensional and consists of two Fe2AsSO14 ribbons oriented in the (1, 0, 0) direction. there are two inequivalent Fe sites. In the first Fe site, Fe is bonded in a 4-coordinate geometry to five O atoms. There are a spread of Fe–O bond distances ranging from 1.80–2.74 Å. In the second Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with two equivalent AsO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 1.76–1.95 Å. As is bonded to four O atoms to form AsO4 tetrahedra that share corners with two equivalent FeO6 octahedra. The corner-sharing octahedra tilt angles range from 48–51°. There are a spread of As–O bond distances ranging from 1.71–1.74 Å. S is bonded in a tetrahedral geometry to four O atoms. There are a spread of S–O bond distances ranging from 1.44–1.55 Å. There are fourteen inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one Fe atom. In the second O site, O is bonded in a single-bond geometry to one S atom. In the third O site, O is bonded in a single-bond geometry to one Fe atom. In the fourth O site, O is bonded in a single-bond geometry to one S atom. In the fifth O site, O is bonded in a single-bond geometry to one Fe atom. In the sixth O site, O is bonded in a bent 150 degrees geometry to two Fe atoms. In the seventh O site, O is bonded in a single-bond geometry to one S atom. In the eighth O site, O is bonded in a bent 120 degrees geometry to one Fe and one As atom. In the ninth O site, O is bonded in a distorted water-like geometry to one Fe and one O atom. The O–O bond length is 1.21 Å. In the tenth O site, O is bonded in a bent 120 degrees geometry to one Fe and one As atom. In the eleventh O site, O is bonded in a single-bond geometry to one O atom. In the twelfth O site, O is bonded in a bent 150 degrees geometry to one Fe and one As atom. In the thirteenth O site, O is bonded in a bent 150 degrees geometry to one Fe and one S atom. In the fourteenth O site, O is bonded in a bent 120 degrees geometry to one Fe and one As atom.