Materials Data on FeSO6 by Materials Project
FeO3SO3 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four sulfur trioxide molecules and four FeO3 clusters. In each FeO3 cluster, Fe is bonded in a distorted trigonal non-coplanar geometry to three O atoms. All Fe–O bond lengths are 1.62 Å. There are three 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 Fe atom. In the third O site, O is bonded in a single-bond geometry to one Fe atom.