ChemInform Abstract: Synthesis and Characterization of the Europium Fullerides EuxC60 (x = 1-6).
Abstract
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ChemInform Abstract
The title compounds are prepared by reaction of Eu with C60 in liquid ammonia and characterized by powder XRD, UV/VIS and FTIR spectroscopies, and magnetic measurements. According to the XRD data, all samples are amorphous and the phases with x = 1-3 contain unreacted C60. The compounds show Curie-Weiss behavior above 50 K and magnetic moments of 6.6, 6.9, and 5.9 μB per Eu atom for x = 4, 5, 6, respectively. The moment of ≈ 7μB for Eu4C60 and Eu5C60 indicates the presence of Eu mainly as Eu2+. In Eu6C60 a larger amount of Eu3+ may be present.
