Ce4B2C2F0.14H2.26: Cerium Borocarbides with Fluoride and Hydride Interstitials Grown from Ce/Cu Flux

James T. Larson, Christina Hoffmann, Susan E. Latturner

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Fluoride interstitials were introduced into an intermetallic structure by carrying out metal flux growth in the presence of a fluorocarbon. Decafluorobiphenyl and anthracene were reacted with boron in a melt composed of cerium and copper, yielding crystals of Ce4B2C2F0.14H2.26, a fluorinated analogue of previously reported Ce4B2C2H2.42. The siting and occupancies of the fluoride and hydride interstitials were confirmed using both single-crystal X-ray diffraction and neutron diffraction. The fluoride mixes with the hydride in an octahedral interstitial site surrounded by cerium cations; additional hydride ions occupy the tetrahedral sites. Magnetic susceptibility shows a change from canted antiferromagnetic ordering reported for the hydride to paramagnetic behavior upon fluorine substitution.

Original languageEnglish
Pages (from-to)5919-5924
Number of pages6
JournalCrystal Growth and Design
Volume23
Issue number8
DOIs
StatePublished - Aug 2 2023

Funding

This research was supported by the National Science Foundation Division of Materials Research (grants DMR-18-08471 and DMR-21-26077). This work used the X-ray Characterization Center in the Department of Chemistry and Biochemistry at Florida State University (FSU075000XRAY). The Scanning Electron Microscope in the Biological Sciences Imaging Resource (BSIR) of the FSU Department of Biology was also used; we thank Dr. Eric Lochner for assistance with this instrument. Single-crystal neutron diffraction data were collected using the TOPAZ instrument (BL-12) at the Spallation Neutron Source at the Oak Ridge National Laboratory, a DOE Office of Science User Facility.

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