Materials Data on CIF7 by Materials Project

CF3IF4 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four fluoroform molecules and four IF4 clusters. In each IF4 cluster, I5+ is bonded in a rectangular see-saw-like geometry to four F1- atoms. There are a spread of I–F bond distances ranging from 1.95–1.97 Å. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one I5+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one I5+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one I5+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one I5+ atom.