Materials Data on CaH2F4 by Materials Project
Ca(HF2)2 crystallizes in the orthorhombic Fddd space group. The structure is three-dimensional. Ca2+ is bonded in a 8-coordinate geometry to eight equivalent F1- atoms. There are four shorter (2.38 Å) and four longer (2.39 Å) Ca–F bond lengths. H1+ is bonded in a linear geometry to two equivalent F1- atoms. Both H–F bond lengths are 1.15 Å. F1- is bonded in a distorted single-bond geometry to two equivalent Ca2+ and one H1+ atom.
36 MATERIALS SCIENCE↗