Materials Data on CsCeHgSe3 by Materials Project

Dataset · Wed Jul 15 04:00:00 EDT 2020

DOI:https://doi.org/10.17188/1276582· OSTI ID:1276582

CsCeHgSe3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Cs1+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of Cs–Se bond distances ranging from 3.71–3.94 Å. Ce3+ is bonded to six Se2- atoms to form CeSe6 octahedra that share corners with two equivalent CeSe6 octahedra, edges with two equivalent CeSe6 octahedra, and edges with four equivalent HgSe4 tetrahedra. The corner-sharing octahedral tilt angles are 38°. There are four shorter (3.02 Å) and two longer (3.03 Å) Ce–Se bond lengths. Hg2+ is bonded to four Se2- atoms to form HgSe4 tetrahedra that share corners with two equivalent HgSe4 tetrahedra and edges with four equivalent CeSe6 octahedra. There are two shorter (2.64 Å) and two longer (2.80 Å) Hg–Se bond lengths. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 6-coordinate geometry to two equivalent Cs1+, two equivalent Ce3+, and two equivalent Hg2+ atoms. In the second Se2- site, Se2- is bonded in a 6-coordinate geometry to three equivalent Cs1+, two equivalent Ce3+, and one Hg2+ atom.

• Research Organization: LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Contributing Organization: The Materials Project; MIT; UC Berkeley; Duke; U Louvain
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1276582
• Report Number(s): mp-574472
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Ce-Cs-Hg-Se
CsCeHgSe3
crystal structure