Features of the Crystal Structure of Polynuclear Metallamacrocyclic Copper (II) Complexes Containing Polycarboxylate Anions

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-09-04 DOI:10.1134/S0022476624080158

G. S. Zabrodina, R. V. Rumyantsev, M. A. Katkova, S. Y. Ketkov

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Abstract

The addition of tartrate, oxalate and citrate anions during the one-pot synthesis of 12-MC-4 metallacrown based on β-alaninehydroximate ligands leads, respectively, to dimeric complex Cu₁₀(β-alaha)₈ (tartrate)₂·10H₂O (1) and two one-dimensional coordination polymers, Cu₅(β-alaha)₄Cu(oxalate)₂·8H₂O (2) and Cu₁₀(β-alaha)₈Cu(citrate)₂·19H₂O (3). According to X-ray diffraction data for 2 and 3, in the presence of oxalate and citrate anions, infinite chains containing alternating molecules of cationic copper (II) 12 –MC-4 metallacrown and polycarboxylate cuprate anion are formed in crystals. The distance between the metallacrown molecules in the crystal depends significantly on the choice of the initial polycarboxylate anion. In contrast to the oxalate and citrate anions, the dibasic tartrate guest anion does not lead to the formation of endless one-dimensional chains in the crystal. In this case, dimeric complex 1 is formed, for which short Cu–O contacts occur between neighboring 12-MC-4 metallamacrocycles.

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含多羧酸阴离子的多核金属杂环铜 (II) 配合物晶体结构的特征

摘要在基于β-丙氨酸羟基配体的12-MC-4金属冠的一锅合成过程中，加入酒石酸根、草酸根和柠檬酸根阴离子分别导致二聚配合物 Cu10(β-alaha)8 (酒石酸盐)2-10H2O（1）和两种一维配位聚合物 Cu5(β-alaha)4Cu(草酸盐)2-8H2O（2）和 Cu10(β-alaha)8Cu(柠檬酸盐)2-19H2O（3）。根据 2 和 3 的 X 射线衍射数据，在草酸盐和柠檬酸阴离子存在的情况下，晶体中会形成含有阳离子铜（II）12 -MC-4 金属冠和聚羧酸铜阴离子交替分子的无限链。晶体中金属冠分子之间的距离在很大程度上取决于初始聚羧酸阴离子的选择。与草酸阴离子和柠檬酸阴离子相反，二盐基酒石酸客体阴离子不会导致在晶体中形成无穷无尽的一维链。在这种情况下，会形成二聚复合物 1，在相邻的 12-MC-4 金属环之间会出现短的 Cu-O 接触。

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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.