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Yttrium‐Amidopyridinate Complexes: Synthesis and Characterization of Yttrium‐Alkyl and Yttrium‐Hydrido Derivatives
Author(s) -
Luconi Lapo,
Lyubov Dmitrii M.,
Bianchini Claudio,
Rossin Andrea,
Faggi Cristina,
Fukin Georgii K.,
Cherkasov Anton V.,
Shavyrin Andrei S.,
Trifonov Alexander A.,
Giambastiani Giuliano
Publication year - 2010
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200900934
Subject(s) - chemistry , yttrium , alkyl , intramolecular force , deprotonation , pyridine , aryl , medicinal chemistry , metathesis , salt metathesis reaction , stereochemistry , organic chemistry , polymerization , ion , polymer , oxide
Aryl‐ or heteroaryl‐substituted aminopyridine ligands (N 2 H Ar ) react with an equimolar amount of [Y(CH 2 SiMe 3 ) 3 (thf) 2 ] to give yttrium(III)‐monoalkyl complexes. The process involves the deprotonation of N 2 H Ar by a yttrium alkyl followed by a rapid and quantitative intramolecular sp 2 ‐CH bond activation of the aryl or heteroaryl pyridine substituents. As a result, new Y complexes distinguished by rare examples of CH bond activations have been isolated and completely characterized. Selective σ‐bond metathesis reactions take place on the residual Y–alkyl bonds upon treatment with PhSiH 3 . Unusual binuclear metallacyclic yttrium(III)‐hydrido complexes have been obtained and characterized by NMR spectroscopy and X‐ray diffraction analysis.