Coordination Compounds of Alkali and Rare Earth Metals Based on Centrosymmetric Chlorine-Substituted Bismercaptooxazole. Synthesis, Structure, and Luminescence

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-08-15 DOI:10.1134/S1070328424600177

A. F. Rogozhin, V. A. Ilichev, L. I. Silantyeva, T. A. Kovylina, E. A. Kozlova, G. K. Fukin, M. N. Bochkarev

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Abstract

New coordination polymers were synthesized. A ditopic centrosymmetric organic ligand containing oxazole heterocycles, 4,8-dichlorobenzo[1,2d:4,5d']bis(oxazole)-2,6(3H,7H)-dithione (H₂L), was prepared and structurally characterized. It was shown that deprotonated H₂L forms non-luminescent binuclear molecular complexes Li₂L(THF)₆ (I) and Na₂L(DME)₄ (II) with alkali metals, while complexes of H₂L with lanthanides are ionic compounds [Ln(DMSO)₈][L]_1.5 (Ln = Nd (III), Yb (IV)) exhibiting moderate metal-centered emission in the near-infrared (IR) range, despite the absence of coordination of the ligand L to lanthanide ions. The molecular structures of H₂L·2DMSO and I–III were established by X-ray diffraction (CCDC nos. 2320461 (H₂L·2DMSO), 2320462 (I), 2320463 (II), 2320464 (III)).

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基于中心对称氯代双巯基恶唑的碱金属和稀土金属配位化合物。合成、结构和发光

摘要合成了新型配位聚合物。制备了一种含有噁唑杂环的二价中心对称有机配体--4,8-二氯苯并[1,2d:4,5d']双（噁唑）-2,6(3H,7H)-二硫酮（H2L），并对其进行了结构表征。研究表明，去质子化的 H2L 与碱金属形成非发光的双核分子配合物 Li2L(THF)6 (I) 和 Na2L(DME)4 (II)，而 H2L 与镧系元素的配合物为离子化合物 [Ln(DMSO)8][L]1.5（Ln = Nd (III)、Yb (IV)），尽管配体 L 与镧系离子之间没有配位，但在近红外（IR）范围内却表现出适度的金属中心发射。通过 X 射线衍射确定了 H2L-2DMSO 和 I-III 的分子结构（CCDC 编号：2320461（H2L-2DMSO）、2320462（I）、2320463（II）、2320464（III））。

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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.