Structural Diversity of Heteroleptic 1,2,4-Triphenylcyclopentadienyl-Bipyridine Complexes of Rare Earth Metals

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-08-15 DOI:10.1134/S1070328423601565

D. A. Bardonov, K. A. Lyssenko, S. S. Degtyareva, I. E. Nifant’ev, D. M. Roitershtein

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Abstract

The reaction of triphenylcyclopentadienyl potassium and bipyridine with lanthanum, praseodymium, erbium, lutetium, and scandium chloride tetrahydrofuranates results in the formation of binuclear [Cp^Ph3Ln(Bipy)Cl(μ₂-Cl)]₂ (Ln = La (I), Pr (II)) and mononuclear [Cp^Ph3Ln(Bipy)Cl₂(THF)] (Ln = Er (III), Lu (IV), [Cp^Ph3Sc(Bipy)Cl₂] (V) complexes (Cp^Ph3 = 1,2,4-triphenylcyclopentadienyl, Bipy = bipyridine). The decrease in the REE radius in the series La…Sc results in the formation of mononuclear instead of binuclear complexes and in a decrease in the coordination number of the central ion. The coplanar arrangement of two different π-systems gives rise to stacking interactions between the triphenylcyclopentadienyl ligand and bipyridine. The molecular structure of complexes I–V was established by X-ray diffraction analysis (CCDC nos. 2308609 (I), 2308608 (II), 2308610 (III), 2308611 (IV), 2308607 (V)).

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稀土金属的 1,2,4-三苯基环戊二烯-联吡啶异性配合物的结构多样性

摘要三苯基环戊二烯钾和联吡啶与氯化镧、镨、铒、镥和钪四氢呋喃酸盐反应，生成双核[CpPh3Ln(Bipy)Cl(μ2-Cl)]2（Ln = La (I)、Ln=Er（III）、Lu（IV）、[CpPh3Sc（Bipy）Cl2]（V）配合物（CpPh3=1,2,4-三苯基环戊二烯，Bipy=联吡啶）。在 La...Sc 系列中，REE 半径的减小导致形成单核而非双核配合物，并降低了中心离子的配位数。两个不同 π 系统的共面排列使三苯基环戊二烯配体和联吡啶之间产生了堆叠作用。复合物 I-V 的分子结构是通过 X 射线衍射分析确定的（CCDC 编号：2308609 (I)、2308608 (II)、2308610 (III)、2308611 (IV)、2308607 (V)）。

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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.