Materials Data on C2SeS2O7F6 by Materials Project
(CF3)2SeS2O7 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of eight fluoroform molecules and four SeS2O7 clusters. In each SeS2O7 cluster, Se4+ is bonded in a distorted trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.60–1.99 Å. There are two inequivalent S4+ sites. In the first S4+ site, S4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is two shorter (1.44 Å) and one longer (1.57 Å) S–O bond length. In the second S4+ site, S4+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of S–O bond distances ranging from 1.43–1.57 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to 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 bent 120 degrees geometry to one Se4+ and one S4+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Se4+ and one S4+ atom. In the fifth O2- site, O2- is bonded in a single-bond geometry to 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 single-bond geometry to one Se4+ atom.