title: Synthesis of a Ferrolite: A Zeolitic All-Iron Framework.
abstract: Crystals of the first sodalite-type zeolite containing an all-iron framework, a ferrolite, Ba8(Fe12O24)Nay(OH)6⋅x H2O, were synthesized using the hydroflux method in nearly quantitative yield. Ba8(Fe12O24)Nay(OH)6⋅x H2O crystallizes in the cubic space group Pm3‾m with a=10.0476(1) Å. Slightly distorted FeO4tetrahedra are linked to form Fe4O4and Fe6O6rings, which in turn yield channels and internal cavities that are characteristic of the sodalite structure. Barium, sodium, and hydroxide ions and water molecules are found in the channels and provide charge balance. Magnetic measurements indicate that the ferrolite exhibits magnetic order up to at least 700 K, with the field-cooled and zero-field-cooled curves diverging. Analysis of the57Fe Mössbauer spectra revealed two spectral components that have equal spectral areas, indicating the presence of two subsets of iron centers in the structure. Dehydrated versions of the ferrolite were also prepared by heating the sample.
authors.affiliation: Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, USA.
authors.forename: Allison M
authors.initials: AM
authors.lastname: Latshaw
authors.affiliation: Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, USA.
authors.forename: W Michael
authors.initials: WM
authors.lastname: Chance
authors.affiliation: Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, USA.
authors.forename: Gregory
authors.initials: G
authors.lastname: Morrison
authors.affiliation: Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, USA.
authors.forename: Karl D
authors.initials: KD
authors.lastname: Zur Loye
authors.affiliation: Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, USA.
authors.forename: Branford O
authors.initials: BO
authors.lastname: Wilkins
authors.affiliation: Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, USA.
authors.forename: Mark D
authors.initials: MD
authors.lastname: Smith
authors.affiliation: Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
authors.forename: Pamela S
authors.initials: PS
authors.lastname: Whitfield
authors.affiliation: Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA.
authors.forename: Melanie J
authors.initials: MJ
authors.lastname: Kirkham
authors.affiliation: National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, 32310, USA.
authors.forename: Sebastian A
authors.initials: SA
authors.lastname: Stoian
authors.affiliation: Chemistry and Biochemistry, University of South Carolina, Columbia, SC, 29208, USA. zurloye@mailbox.sc.edu.
authors.forename: Hans-Conrad
authors.identifier: 0000-0001-7351-9098
authors.initials: HC
authors.lastname: Zur Loye
keywords: Mössbauer spectroscopy; crystal growth; neutron diffraction; sodalite structure; zeolites