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Synthesis of a Ferrolite: A Zeolitic All‐Iron Framework
Author(s) -
Latshaw Allison M.,
Chance W. Michael,
Morrison Gregory,
zur Loye Karl D.,
Wilkins Branford O.,
Smith Mark D.,
Whitfield Pamela S.,
Kirkham Melanie J.,
Stoian Sebastian A.,
zur Loye HansConrad
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201607800
Subject(s) - sodalite , crystallography , zeolite , yield (engineering) , ion , chemistry , analytical chemistry (journal) , mössbauer spectroscopy , hydroxide , materials science , inorganic chemistry , catalysis , chromatography , metallurgy , biochemistry , organic chemistry
Crystals of the first sodalite‐type zeolite containing an all‐iron framework, a ferrolite, Ba 8 (Fe 12 O 24 )Na y (OH) 6 ⋅ x H 2 O, were synthesized using the hydroflux method in nearly quantitative yield. Ba 8 (Fe 12 O 24 )Na y (OH) 6 ⋅ x H 2 O crystallizes in the cubic space group P m 3 ‾ m with a= 10.0476(1) Å. Slightly distorted FeO 4 tetrahedra are linked to form Fe 4 O 4 and Fe 6 O 6 rings, 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 the 57 Fe 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.