Materials Data on FeCSO7 by Materials Project
FeCSO7 crystallizes in the monoclinic P2_1/m space group. The structure is two-dimensional and consists of one FeCSO7 sheet oriented in the (0, 0, 1) direction. Fe is bonded to six O atoms to form FeO6 octahedra that share corners with four equivalent SO4 tetrahedra. There are a spread of Fe–O bond distances ranging from 1.98–2.05 Å. C is bonded in a trigonal planar geometry to three O atoms. There is one shorter (1.25 Å) and two longer (1.30 Å) C–O bond length. S is bonded to four O atoms to form SO4 tetrahedra that share corners with four equivalent FeO6 octahedra. The corner-sharing octahedra tilt angles range from 32–40°. There are a spread of S–O bond distances ranging from 1.47–1.50 Å. There are six inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one C atom. In the second O site, O is bonded in an L-shaped geometry to one Fe and one C atom. In the third O site, O is bonded in an L-shaped geometry to one Fe and one C atom. In the fourth O site, O is bonded in a bent 150 degrees geometry to one Fe and one S atom. In the fifth O site, O is bonded in a bent 150 degrees geometry to one Fe and one S atom. In the sixth O site, O is bonded in a bent 150 degrees geometry to one Fe and one S atom.