Issue 16, 2010
From the journal:

Dalton Transactions

Single, double and triple deprotonation of a β-diketimine bearing pendant pyridyl group and the corresponding rare-earth metal complexes†

Xin Xu,ab   Yaofeng Chen,*b   Gang Zou*a  and  Jie Sunb  

* Corresponding authors

a Laboratory of Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Meilong Road, Shanghai, China
E-mail: zougang@ecust.edu.cn

b State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai, China
E-mail: yaofchen@mail.sioc.ac.cn
Fax: 86-21-64166128

Abstract

A new β-diketimine bearing the pendant pyridyl group, CH3C(2,6-(iPr)2C6H3NH)CHC(CH3)(NCH2–C5NH4) (L1), was synthesized. The reaction of L1 with one equivalent of Sc(CH2SiMe3)3(THF)2 at room temperature gave a singly deprotonated product (L1−H)Sc(CH2SiMe3)2 (1). Y(CH2SiMe3)3(THF)2 under the same conditions led to the unexpected dimer [(L1−H3)Y(THF)]2 (2), in which the ligand precursor L1 was triply deprotonated. The reaction of L1 with Y(CH2SiMe3)3(THF)2 at −35 °C provided a mixture of singly deprotonated product (L1−H)Y(CH2SiMe3)2 (3) and doubly deprotonated product (L1−H2)Y(CH2SiMe3)(THF)2 (4). The reactions of L1 with Ln[N(SiMe3)2]3 gave only singly deprotonated products (L1−H)Ln[N(SiMe3)2]2 (5: Ln = Y; 6: Ln = La). The complexes 1, 2 and 4–6 have been characterized by single-crystal X-ray diffraction.

Graphical abstract: Single, double and triple deprotonation of a β-diketimine bearing pendant pyridyl group and the corresponding rare-earth metal complexes

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Article information

DOI
https://doi.org/10.1039/B926898G
Article type
Paper
Submitted
22 Dec 2009
Accepted
16 Feb 2010
First published
16 Mar 2010

Dalton Trans., 2010,39, 3952-3958

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Single, double and triple deprotonation of a β-diketimine bearing pendant pyridyl group and the corresponding rare-earth metal complexes

X. Xu, Y. Chen, G. Zou and J. Sun, Dalton Trans., 2010, 39, 3952 DOI: 10.1039/B926898G

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