Affiliation:
1. Anorganisch-chemisches Institut der Technischen Universität München, Lichtenbergstraße 4, D-85747 Garching b. München
Abstract
It is shown that the introduction of sterically demanding ligands in lanthanoid metal complexes can depend more on the precise composition of the lanthanoid precursor than on the size of the new ligand. Thus, tris(r-butyl)methanol (“rmojt-H”) does not react with the amides Ln[N(SiMe3)2]3 of the “late” (small) lanthanoid metals. However, fast and clean reactions occur with the sterically less demanding derivatives Ln[N(SiHMe2)2]3, with new homoleptic complexes Ln(tritox)3 (Ln = Y, Nd) being formed with practically all metals of this group of elements. The molecular and crystal structures of some lanthanoid amides and alkoxides are described.
Cited by
115 articles.
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