Materials Data on Te4N5F21 by Materials Project
(N2)5(TeF5)8F2 crystallizes in the tetragonal P-42_1c space group. The structure is zero-dimensional and consists of ten ammonia molecules, two hydrofluoric acid molecules, and eight TeF5 clusters. In each TeF5 cluster, Te5+ is bonded in a square pyramidal geometry to five F1- atoms. There are a spread of Te–F bond distances ranging from 1.85–1.95 Å. There are five inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Te5+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Te5+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one Te5+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one Te5+ atom. In the fifth F1- site, F1- is bonded in a single-bond geometry to one Te5+ atom.