Materials Data on Ta9(FeS3)2 by Materials Project

Abstract

Ta9(FeS3)2 crystallizes in the hexagonal P-62m space group. The structure is three-dimensional. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded in a 5-coordinate geometry to two equivalent Fe and three S atoms. Both Ta–Fe bond lengths are 2.49 Å. There are one shorter (2.42 Å) and two longer (2.55 Å) Ta–S bond lengths. In the second Ta site, Ta is bonded in a 3-coordinate geometry to three S atoms. There are two shorter (2.52 Å) and one longer (2.56 Å) Ta–S bond lengths. Fe is bonded in a 6-coordinate geometry to six equivalent Ta atoms. There are two inequivalent S sites. In the first S site, S is bonded in a distorted pentagonal planar geometry to five Ta atoms. In the second S site, S is bonded in a 4-coordinate geometry to four Ta atoms.