Methyl Maltolate and Ethyl Maltolate Coordinated Oxidovanadium(V) Complexes with N'-(2-Hydroxy-5-methylbenzylidene)-4-trifluoromethylbenzohydrazide: Synthesis, Crystal Structures and Catalytic Epoxidation Property.

IF 1.2 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Acta Chimica Slovenica Pub Date : 2023-03-20 DOI:10.17344/acsi.2022.7903
Zhongduo Xiong, Ping Zhang
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Abstract

A mononuclear methyl maltolate (Hmm) coordinated oxidovanadium(V) complex [VOL1(mm)] (1), and a mononuclear ethyl maltolate (Hem) coordinated oxidovanadium(V) complex [VOL2(em)] (2), where L1 and L2 are the dianionic form of N'-(2-hydroxy-5-methylbenzylidene)-3-trifluoromethylbenzohydrazide (H2L1) and N'-(2-hydroxy-5-methylbenzylidene)-4-trifluoromethylbenzohydrazide (H2L2), respectively, have been prepared. The hydrazones and the complexes were characterized by elemental analysis, FT-IR and UV-Vis spectra. Structures of H2L1 and the two complexes were further characterized by single crystal X-ray diffraction. The two complexes have similar structures, with the V atoms in octahedral coordination. The hydrazones behave as ONO tridentate ligands with the V atoms. Both complexes have interesting properties on the catalytic epoxidation of cyclooctene.

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麦芽糖酸甲酯和麦芽糖酸乙酯配位氧化钒(V)配合物与N'-(2-羟基-5-甲基苄基)-4-三氟甲基苯并肼:合成、晶体结构和催化环氧化性能。
制备了一种单核麦草酸甲酯(Hmm)配位氧化钒(V)配合物[VOL1(mm)](1)和一种单核麦草酸乙酯(Hem)配位氧化钒(V)配合物[VOL2(em)](2),其中L1和L2分别是N'-(2-羟基-5-甲基苄基)-3-三氟甲基苯并肼(H2L1)和N'-(2-羟基-5-甲基苄基)-4-三氟甲基苯并肼(H2L2)的二阴离子形式。通过元素分析、红外光谱和紫外可见光谱对腙和配合物进行了表征。通过x射线单晶衍射进一步表征了H2L1及其配合物的结构。两种配合物结构相似,均为V原子八面体配位。该腙具有ONO三齿配体与V原子的行为。这两种配合物在环烯的催化环氧化反应上都有令人感兴趣的性能。
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来源期刊
Acta Chimica Slovenica
Acta Chimica Slovenica 化学-化学综合
CiteScore
2.50
自引率
25.00%
发文量
80
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.
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