Materials Data on Sb8O11F2 by Materials Project
Sb8O11F2 crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of one Sb8O11F2 sheet oriented in the (1, 0, 0) direction. there are four inequivalent Sb3+ sites. In the first Sb3+ site, Sb3+ is bonded in a distorted T-shaped geometry to two O2- and one F1- atom. There is one shorter (1.99 Å) and one longer (2.00 Å) Sb–O bond length. The Sb–F bond length is 2.04 Å. In the second Sb3+ site, Sb3+ is bonded in a distorted T-shaped geometry to three O2- atoms. There are two shorter (2.00 Å) and one longer (2.01 Å) Sb–O bond lengths. In the third Sb3+ site, Sb3+ is bonded in a distorted square co-planar geometry to four O2- atoms. There are a spread of Sb–O bond distances ranging from 2.00–2.30 Å. In the fourth Sb3+ site, Sb3+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Sb–O bond distances ranging from 1.99–2.28 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to two Sb3+ atoms. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to two Sb3+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Sb3+ atoms. In the fourth O2- site, O2- is bonded in a linear geometry to two equivalent Sb3+ atoms. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to two Sb3+ atoms. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to three Sb3+ atoms. F1- is bonded in a single-bond geometry to one Sb3+ atom.