Synthesis and Structure of [{Ln(Me2Si(NMes)2)(THF)2}2(μ-L)2] (L = $\mathbf{BH}_{\mathbf{4}}^{-}$, Ln = Y, Dy; L = PhS–, Ln = Y, Tb, Dy) Complexes

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-04-30 DOI:10.1134/S0022476624030090

D. A. Bashirov, D. I. Lashchenko, T. S. Sukhikh, S. N. Konchenko

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Abstract

New silanediamide complexes of rare-earth elements are synthesized: [{Dy(Me₂Si(NMes)₂)(THF)₂}₂(μ-Cl)₂] (Dy1), [{Ln(Me₂Si(NMes)₂)(THF)₂}₂(μ-BH₄)₂] (Ln2, Ln = Y, Dy), and [{Ln(Me₂Si(NMes)₂)(THF)₂}₂ (μ-SPh)₂] (Ln3, Ln = Y, Tb, Dy), Mes = 2,4,6-(CH₃)C₆H₂=mesityl. The compounds are isolated as crystalline phases Dy1, Ln2 (Ln = Y, Dy), Y3·2THF, Tb3·2C₇H₈, Dy3·2THF, and Dy3·2C₇H₈ and characterized by single crystal X-ray diffraction. All complexes have a binuclear structure; a silanediamide ligand is chelated to each Ln atom, and Cl^–, $\text{BH}_{4}^{-}$, or SPh^– act as bridges. By photoluminescence spectroscopy of the solutions of Tb and Dy complexes in THF it is shown that (Me₂Si(NMes)₂)^2– is an effective ligand antenna, which sensitizes metal-centered emission of these lanthanides.

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{Ln(Me2Si(NMes)2)(THF)2}2(μ-L)2]（L = $$\mathbf{BH}_\{mathbf{4}}^{-}$，Ln = Y, Dy；L = PhS-，Ln = Y, Tb, Dy）络合物的合成与结构

摘要合成了新的稀土元素硅烷二酰胺配合物：[{Dy(Me2Si(NMes)2)(THF)2}2(μ-Cl)2]（Dy1）、[{Ln(Me2Si(NMes)2)(THF)2}2(μ-BH4)2]（Ln2，Ln = Y，Dy）和[{Ln(Me2Si(NMes)2)(THF)2}2 (μ-SPh)2] （Ln3，Ln = Y，Tb，Dy），Mes = 2,4,6-(CH3)C6H2=甲硅烷基。这些化合物被分离成 Dy1、Ln2（Ln = Y、Dy）、Y3-2THF、Tb3-2C7H8、Dy3-2THF 和 Dy3-2C7H8 结晶相，并通过单晶 X 射线衍射进行表征。所有配合物都具有双核结构；每个 Ln 原子上都螯合了一个硅烷二酰胺配体，Cl-、$\text{BH}_{4}^{-}$或 SPh- 充当桥。通过对 Tb 和 Dy 复合物在 THF 中的溶液进行光致发光光谱分析，结果表明 (Me2Si(NMes)2)2- 是一种有效的配体天线，可以敏化这些镧系元素的金属中心发射。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

Synthesis and Structure of [{Ln(Me2Si(NMes)2)(THF)2}2(μ-L)2] (L = \(\mathbf{BH}_{\mathbf{4}}^{-}\), Ln = Y, Dy; L = PhS–, Ln = Y, Tb, Dy) Complexes

Abstract