title: Rare-earth-metal dialkynyl dimethyl aluminates.
abstract: A new class of rare-earth-metal alkynyl complexes has been prepared. The reactions of the tris(tetramethylaluminate)s of lanthanum, praseodymium, samarium, yttrium, holmium, and thulium, [Ln(AlMe₄)₃], with phenylacetylene afforded compounds [Ln{(μ-C≡CPh)₂AlMe₂}₃] (Ln=La (1), Pr (2), Sm (3), Y (4), Ho (5), Tm (6)). All of these compounds have been characterized by NMR spectroscopy, X-ray crystallography, and by elemental analysis. NMR spectroscopic studies of the series of para- magnetic compounds [Ln(AlMe₄)₃] and [Ln{(μ-C≡CPh)₂AlMe₂}₃] have also been performed.
authors.affiliation: Lehrstuhl für Anorganische Chemie und Strukturchemie, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld, Germany.
authors.forename: Anja
authors.initials: A
authors.lastname: Nieland
authors.forename: Andreas
authors.initials: A
authors.lastname: Mix
authors.forename: Beate
authors.initials: B
authors.lastname: Neumann
authors.forename: Hans-Georg
authors.initials: HG
authors.lastname: Stammler
authors.forename: Norbert W
authors.initials: NW
authors.lastname: Mitzel