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Z. Naturforsch. 2014,
69b, 327 – 331
doi:10.5560/ZNB.2014-3289
Dicationic Methyl Complexes of the Rare-Earth Elements
Lehrstuhl für Anorganische Chemie und Strukturchemie, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
Reprint requests to Prof. Norbert W. Mitzel. E-mail:
mitzel@uni-bielefeld.de
Received October 25, 2013 / published online March 17, 2014
The reactions of Ln(AlMe4)3 (Ln = Ho, Tm) with the crown ether [12]crown-4 yield dicationic methyl rare-earth metal complexes [LnMe([12]crown-4)2][AlMe4]2 (Ln = Ho (1), Tm (2)). The reaction of La(AlMe4)3 with [18]crown-6 in thf affords [LaMe([18]crown-6)(thf)2][AlMe4]2 (3). The compounds have been characterized by X-ray diffraction, 1 and 3 additionally by elemental analyses as well as by 1H and 27Al, and 3 also by 13C NMR spectroscopy.
Key words: Lanthanoides, Crown Ethers, Alkyl Complexes, Structure, NMR