Scandium, yttrium, and ytterbium bisalkyl complexes stabilized by monoanionic amidopyridinate ligands


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详细

A reaction of Sc, Y, and Yb amidopyridinate dichlorides with the corresponding amount of LiCH2SiMe3 was used to synthesize bis(trimethylsilylmethyl) complexes (Ap)Ln(CH2SiMe3)2-(THF) (Ap is N-mesityl-6-(2,4,6-triisopropylphenyl)pyridine-2-amide (Ap9Me), Ln = Y (2); Ap is N-(2,6-diisopropylphenyl)-6-(2,4,6-triisopropylphenyl)pyridine-2-amide (Ap*), Ln = Sc (3), Yb (4)). An exchange reaction of yttrium amidopyridinate dichloride derivative 1 with 4 equiv. of ButLi in hexane gave the corresponding di-tert-butyl derivative Ap9MeY(But)2(THF) (5). Molecular structures of complexes 3 and 4 were established by X-ray diffraction. A method of the ligand solid angles was used to calculate the completion degree of the metal atom coordination sphere for the series of isomorphic derivatives (Ap*)Ln(CH2SiMe3)2(THF) containing the central metal ions with different ionic radii (Sc, Y, Yb, Lu). According to this method, the amidopyridinate ligand solid angle in these complexes virtually does not vary, while the solid angles of coordinated THF molecule and alkyl ligands vary within a wide range.

作者简介

D. Lyubov

G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences

Email: trif@iomc.ras.ru
俄罗斯联邦, 49 ul. Tropinina, Nizhny Novgorod, 603950

V. Rad’kov

G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences

Email: trif@iomc.ras.ru
俄罗斯联邦, 49 ul. Tropinina, Nizhny Novgorod, 603950

A. Cherkasov

G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences

Email: trif@iomc.ras.ru
俄罗斯联邦, 49 ul. Tropinina, Nizhny Novgorod, 603950

G. Fukin

G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences

Email: trif@iomc.ras.ru
俄罗斯联邦, 49 ul. Tropinina, Nizhny Novgorod, 603950

A. Trifonov

G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences; A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences

编辑信件的主要联系方式.
Email: trif@iomc.ras.ru
俄罗斯联邦, 49 ul. Tropinina, Nizhny Novgorod, 603950; 28 ul. Vavilova, Moscow, 119991

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