Flux Synthesis of a Metal Carbide Hydride Using Anthracene As a Reactant

La15(FeC6)4H was synthesized from the reaction of iron and anthracene in La/Ni eutectic flux. Anthracene was the source of both the carbon and hydrogen in the product. The structure of this metal carbide hydride features hydride ions in tetrahedral interstitial sites surrounded by lanthanum ions, wh...

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Bibliographic Details
Published in:Inorganic chemistry 2020-08, Vol.59 (16), p.11651-11657
Main Authors: Engstrand, Tate O, Cope, Emily M, Vasquez, Guillermo, Haddock, Jo W, Hertz, Mary B, Wang, Xiaoping, Latturner, Susan E
Format: Article
Language:English
Subjects:
anions
fluxes
hydrocarbons
inorganic carbon compounds
INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
metals
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Summary:La15(FeC6)4H was synthesized from the reaction of iron and anthracene in La/Ni eutectic flux. Anthracene was the source of both the carbon and hydrogen in the product. The structure of this metal carbide hydride features hydride ions in tetrahedral interstitial sites surrounded by lanthanum ions, which was confirmed by single-crystal neutron diffraction studies. The trigonal planar FeC6 units in which the central iron atom is coordinated by three ethylenide groups are similar to those found in La3.67FeC6, a previously reported compound that is formed in the absence of a hydride source. Magnetic susceptibility data confirm that the iron sites do not have magnetic moments. Density of states calculations indicate that La15(FeC6)4H is metallic and is stabilized by the incorporation of hydride anions.
ISSN:0020-1669
1520-510X
DOI:10.1021/acs.inorgchem.0c01505