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

被引：0
|
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.
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页码：277 / 287
页数：11
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