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Unusual complex chemistry of rare-earth elements: Large ionic radii-small coordination numbers

Title data

Dehnicke, Kurt ; Greiner, Andreas:
Unusual complex chemistry of rare-earth elements: Large ionic radii-small coordination numbers.
In: Angewandte Chemie International Edition. Vol. 42 (2003) Issue 12 . - pp. 1340-1354.
ISSN 1521-3773
DOI: https://doi.org/10.1002/anie.200390346

Official URL: Volltext

Abstract in another language

Because of their large ionic radii and relatively low oxidation states rare-earth elements generally form complexes which have high coordination numbers and weak metal–ligand bonds. They are often not suitable for homogeneous catalysis on account of their instability of configuration in solution. Complexes of the corresponding metal atoms with low coordination numbers may be an improvement. This type of complex can be obtained in the classical way by the introduction of bulky ligands, and recently, they were also prepared in reactions with ligand groups which offer remarkable metal–ligand bond features. This concept is demonstrated for complexes with bulky bis(trimethylsilyl)amido ligands {N(SiMe3)2}− and “slim” phosphoraneiminato ligands (NPR3−). Their suitability as catalysts for the ring-opening polymerization of lactones is reported as well.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: coordination chemistry; ligand effects; N ligands; polymerization; rare-earth elements
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 08 Apr 2015 11:53
Last Modified: 08 Apr 2015 11:53
URI: https://eref.uni-bayreuth.de/id/eprint/9755