5-溴-2-（（2-哌嗪-1-基乙基）甲基）苯酚衍生的两种铜（II）配合物的合成、晶体结构和催化氧化性能

IF 1.2 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Acta Chimica Slovenica Pub Date : 2025-03-01 DOI:10.17344/acsi.2025.9182

Ya Liu, Qiwen Yang, Shuang Wang, Runhan Liu, Haodong Yu, Wenhong Xu, Yuwei Ning

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引用次数: 0

摘要

制备了两个新的铜（II）配合物[Cu(HL)(ONO2)]NO3(1)和[CuCl(HL)]Cl∙H2O(2)，其中HL为希夫碱5-溴-2-（（2-哌嗪-1-基乙基氨基）甲基）苯酚（HL）的两性离子形式。用红外光谱和紫外可见光谱对希夫碱及其配合物进行了表征。并用1H NMR对游离席夫碱进行了表征。通过x射线单晶衍射进一步证实了配合物的结构。配合物中的Cu原子呈方形平面配位。两种铜配合物的晶体结构都由氢键稳定。该配合物对苯乙烯环氧化反应具有较高的催化活性，转化率和选择性均在90%以上。

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Synthesis, Crystal Structures and Catalytic Oxidation Property of Two Copper(II) Complexes Derived from 5-Bromo-2-((2-piperazin-1-ylethylimino)methyl)phenol.

Two new copper(II) complexes, [Cu(HL)(ONO2)]NO3 (1) and [CuCl(HL)]Cl∙H2O (2), where HL is the zwitterionic form of the Schiff base 5-bromo-2-((2-piperazin-1-ylethylimino)methyl)phenol (HL), have been prepared. The Schiff base and two complexes were characterized by IR and UV-Vis spectroscopy. In addition, the free Schiff base was characterized by 1H NMR spectroscopy. Structures of the complexes were further confirmed by single crystal X-ray diffraction. The Cu atoms in the complexes are in square planar coordination. Crystal structures of both copper complexes are stabilized by hydrogen bonds. The complexes have high catalytic activity for the epoxidation of styrene, with conversions and selectivity over 90%.

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来源期刊

Acta Chimica Slovenica 化学-化学综合

CiteScore

2.50

自引率

25.00%

发文量

审稿时长

1.0 months

期刊介绍： Is an international, peer-reviewed and Open Access journal. It provides a forum for the publication of original scientific research in all fields of chemistry and closely related areas. Reviews, feature, scientific and technical articles, and short communications are welcome.