Materials Data on Ce8C8Cl5 by Materials Project

Abstract

Ce8C8Cl5 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are four inequivalent Ce+3.12+ sites. In the first Ce+3.12+ site, Ce+3.12+ is bonded in a 9-coordinate geometry to six C+2.50- and three Cl1- atoms. There are a spread of Ce–C bond distances ranging from 2.54–2.72 Å. There are two shorter (2.95 Å) and one longer (3.26 Å) Ce–Cl bond lengths. In the second Ce+3.12+ site, Ce+3.12+ is bonded to five C+2.50- and three Cl1- atoms to form a mixture of distorted face and corner-sharing CeC5Cl3 hexagonal bipyramids. There are a spread of Ce–C bond distances ranging from 2.34–2.67 Å. There are a spread of Ce–Cl bond distances ranging from 2.90–3.16 Å. In the third Ce+3.12+ site, Ce+3.12+ is bonded in a 1-coordinate geometry to five C+2.50- and three Cl1- atoms. There are a spread of Ce–C bond distances ranging from 2.32–2.89 Å. There are a spread of Ce–Cl bond distances ranging from 3.01–3.21 Å. In the fourth Ce+3.12+ site, Ce+3.12+ is bonded in a 2-coordinate geometry to four C+2.50- and three Cl1- atoms. There are a spread of Ce–C bond distances ranging from 2.32–2.62 Å. There are a spread of Ce–Cl bond distances ranging from 3.02–3.42 Å. There are four inequivalent C+2.50- sites. In the first C+2.50- site, C+2.50- is bonded to five Ce+3.12+ and one C+2.50- atom to form distorted corner-sharing CCe5C octahedra. The corner-sharing octahedral tilt angles are 66°. The C–C bond length is 1.39 Å. In the second C+2.50- site, C+2.50- is bonded in a 6-coordinate geometry to five Ce+3.12+ and one C+2.50- atom. In the third C+2.50- site, C+2.50- is bonded in a 6-coordinate geometry to five Ce+3.12+ and one C+2.50- atom. The C–C bond length is 1.39 Å. In the fourth C+2.50- site, C+2.50- is bonded in a 6-coordinate geometry to five Ce+3.12+ and one C+2.50- atom. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a 5-coordinate geometry to five Ce+3.12+ atoms. In the second Cl1- site, Cl1- is bonded in a distorted rectangular see-saw-like geometry to four Ce+3.12+ atoms. In the third Cl1- site, Cl1- is bonded in a 6-coordinate geometry to six Ce+3.12+ atoms.