Materials Data on Ce2Br3N by Materials Project
Ce2NBr3 crystallizes in the tetragonal I4_1/a space group. The structure is three-dimensional. there are two inequivalent Ce3+ sites. In the first Ce3+ site, Ce3+ is bonded in a 2-coordinate geometry to two equivalent N3- and five Br1- atoms. There are one shorter (2.34 Å) and one longer (2.35 Å) Ce–N bond lengths. There are a spread of Ce–Br bond distances ranging from 3.01–3.32 Å. In the second Ce3+ site, Ce3+ is bonded in a 2-coordinate geometry to two equivalent N3- and six Br1- atoms. There are one shorter (2.31 Å) and one longer (2.37 Å) Ce–N bond lengths. There are a spread of Ce–Br bond distances ranging from 3.04–3.33 Å. N3- is bonded to four Ce3+ atoms to form edge-sharing NCe4 tetrahedra. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted T-shaped geometry to three Ce3+ atoms. In the second Br1- site, Br1- is bonded in a 4-coordinate geometry to four Ce3+ atoms. In the third Br1- site, Br1- is bonded in a 4-coordinate geometry to four Ce3+ atoms.