Materials Data on CaAs2HF13 by Materials Project

Abstract

CaAs2HF13 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ca2+ is bonded in a 9-coordinate geometry to nine F1- atoms. There are a spread of Ca–F bond distances ranging from 2.36–2.74 Å. There are two inequivalent As5+ sites. In the first As5+ site, As5+ is bonded in an octahedral geometry to six F1- atoms. There are a spread of As–F bond distances ranging from 1.73–1.81 Å. In the second As5+ site, As5+ is bonded in an octahedral geometry to six F1- atoms. There are a spread of As–F bond distances ranging from 1.73–1.82 Å. H1+ is bonded in a single-bond geometry to one F1- atom. The H–F bond length is 0.94 Å. There are thirteen inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted bent 120 degrees geometry to one Ca2+ and one As5+ atom. In the second F1- site, F1- is bonded in a distorted bent 150 degrees geometry to one Ca2+ and one As5+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the fourth F1- site, F1- is bonded in a distorted bent 150 degrees geometry to one Ca2+ and one As5+ atom. In the fifth F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the sixth F1- site, F1- is bonded in a bent 150 degrees geometry to one Ca2+ and one As5+ atom. In the seventh F1- site, F1- is bonded in a bent 120 degrees geometry to one Ca2+ and one As5+ atom. In the eighth F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the ninth F1- site, F1- is bonded in a distorted single-bond geometry to one Ca2+ and one As5+ atom. In the tenth F1- site, F1- is bonded in a single-bond geometry to one Ca2+ and one H1+ atom. In the eleventh F1- site, F1- is bonded in a single-bond geometry to one Ca2+ and one As5+ atom. In the twelfth F1- site, F1- is bonded in a single-bond geometry to one As5+ atom. In the thirteenth F1- site, F1- is bonded in a bent 150 degrees geometry to one Ca2+ and one As5+ atom.