Oxovanadium(IV) complexes containing tetradentate N2O2-type ligands: synthesis, crystal structure, antioxidant activity, and spectroscopic characterization

被引：1

作者：

Le, Ngoc Tram Anh ^{[1
]}

Jeong, Yuri ^{[2
,3
]}

Jang, Yoon Jung ^{[4
]}

Min, Kil Sik ^{[2
,3
]}

机构：

[1] Kyungpook Natl Univ, Dept Chem, Daegu 41566, South Korea

[2] Kyungpook Natl Univ, Dept Chem Educ, Daegu 41566, South Korea

[3] Kyungpook Natl Univ, Sci Educ Res Inst, Daegu 41566, South Korea

[4] Yeungnam Univ, Coll Basis Educ, Gyongsan 38541, Gyeong Buk, South Korea

来源：

JOURNAL OF INCLUSION PHENOMENA AND MACROCYCLIC CHEMISTRY | 2024年 / 104卷 / 5-6期

基金：

新加坡国家研究基金会;

关键词：

Vanadium complex; Tetradentate ligand; Crystal structure; Electron paramagnetic resonance; Magnetic properties; Antioxidant activity; MAGNETIC-PROPERTIES; OXIDATION; NI(II);

D O I：

10.1007/s10847-023-01215-z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two coordination complexes were synthesized using vanadyl(IV) acetylacetonate and H(2)denm/H(4)dpim in MeOH/CHCl3 and characterized. The complexes were [VO(denm)(H2O)]<middle dot>CH3OH (1) and [VO(H(2)dpim)(CH3COONa)]<middle dot>CH3OH (2) (H(2)denm = 2,2 '-[[(1R,2R)-1,2-diphenyl-1,2-ethanediyl]bis[(E)-nitrilomethylidyne]]bis[6-methoxyphenol]; H(4)dpim = [(2,2-dimethyl-1,3-propanediyl)bis(iminomethylene)bis(6-methoxyphenol)]. The vanadyl(IV) species of 1 and 2 exhibited distorted octahedral geometries with two N and two O atoms of each ligand and aqua/acetate ligand. Complex 1 did not exhibit emissions in the solid and solution states, whereas complex 2 exhibited strong band maxima in the solid state and a dimethyl sulfoxide solution. The magnetic properties and electron paramagnetic resonance spectra of 1 and 2 revealed that they were S = 1/2 spin systems. The antioxidant activity of 2 was higher than those of 1 and ascorbic acid.

引用

页码：277 / 287

页数：11

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