Materials Data on SrCeI4 by Materials Project
SrCeI4 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Sr is bonded in a 8-coordinate geometry to eight I atoms. There are a spread of Sr–I bond distances ranging from 3.37–3.56 Å. Ce is bonded in a 8-coordinate geometry to eight I atoms. There are a spread of Ce–I bond distances ranging from 3.31–3.42 Å. There are four inequivalent I sites. In the first I site, I is bonded in a distorted see-saw-like geometry to two equivalent Sr and two equivalent Ce atoms. In the second I site, I is bonded to two equivalent Sr and two equivalent Ce atoms to form a mixture of distorted edge and corner-sharing ISr2Ce2 trigonal pyramids. In the third I site, I is bonded to two equivalent Sr and two equivalent Ce atoms to form a mixture of distorted edge and corner-sharing ISr2Ce2 trigonal pyramids. In the fourth I site, I is bonded in a distorted see-saw-like geometry to two equivalent Sr and two equivalent Ce atoms.