Materials Data on KOsNOF5 by Materials Project
KOsF5NO crystallizes in the monoclinic P2_1/m space group. The structure is two-dimensional and consists of two nitroxyl molecules and one KOsF5 sheet oriented in the (0, 0, 1) direction. In the KOsF5 sheet, K1+ is bonded in a 12-coordinate geometry to twelve F1- atoms. There are a spread of K–F bond distances ranging from 2.76–3.27 Å. Os1+ is bonded in a distorted square pyramidal geometry to five F1- atoms. There are a spread of Os–F bond distances ranging from 1.94–1.96 Å. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a 2-coordinate geometry to one K1+ and one Os1+ atom. In the second F1- site, F1- is bonded in a distorted single-bond geometry to three equivalent K1+ and one Os1+ atom. In the third F1- site, F1- is bonded in a distorted single-bond geometry to four equivalent K1+ and one Os1+ atom.