Ngoc Tram Anh Le, Yuri Jeong, Yoon Jung Jang, Kil Sik Min
{"title":"Oxovanadium(IV) complexes containing tetradentate N2O2-type ligands: synthesis, crystal structure, antioxidant activity, and spectroscopic characterization","authors":"Ngoc Tram Anh Le, Yuri Jeong, Yoon Jung Jang, Kil Sik Min","doi":"10.1007/s10847-023-01215-z","DOIUrl":null,"url":null,"abstract":"<div><p>Two coordination complexes were synthesized using vanadyl(IV) acetylacetonate and H<sub>2</sub>denm/H<sub>4</sub>dpim in MeOH/CHCl<sub>3</sub> and characterized. The complexes were [VO(denm)(H<sub>2</sub>O)]·CH<sub>3</sub>OH (<b>1</b>) and [VO(H<sub>2</sub>dpim)(CH<sub>3</sub>COONa)]·CH<sub>3</sub>OH (<b>2</b>) (H<sub>2</sub>denm = 2,2′-[[(1<i>R</i>,2<i>R</i>)-1,2-diphenyl-1,2-ethanediyl]bis[(<i>E</i>)-nitrilomethylidyne]]bis[6-methoxyphenol]; H<sub>4</sub>dpim = [(2,2-dimethyl-1,3-propanediyl)bis(iminomethylene)bis(6-methoxyphenol)]. The vanadyl(IV) species of <b>1</b> and <b>2</b> exhibited distorted octahedral geometries with two N and two O atoms of each ligand and aqua/acetate ligand. Complex <b>1</b> did not exhibit emissions in the solid and solution states, whereas complex <b>2</b> exhibited strong band maxima in the solid state and a dimethyl sulfoxide solution. The magnetic properties and electron paramagnetic resonance spectra of <b>1</b> and <b>2</b> revealed that they were <i>S</i> = 1/2 spin systems. The antioxidant activity of <b>2</b> was higher than those of <b>1</b> and ascorbic acid.</p></div>","PeriodicalId":638,"journal":{"name":"Journal of Inclusion Phenomena and Macrocyclic Chemistry","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Inclusion Phenomena and Macrocyclic Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10847-023-01215-z","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Agricultural and Biological Sciences","Score":null,"Total":0}
引用次数: 0
Abstract
Two coordination complexes were synthesized using vanadyl(IV) acetylacetonate and H2denm/H4dpim in MeOH/CHCl3 and characterized. The complexes were [VO(denm)(H2O)]·CH3OH (1) and [VO(H2dpim)(CH3COONa)]·CH3OH (2) (H2denm = 2,2′-[[(1R,2R)-1,2-diphenyl-1,2-ethanediyl]bis[(E)-nitrilomethylidyne]]bis[6-methoxyphenol]; H4dpim = [(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.
期刊介绍:
The Journal of Inclusion Phenomena and Macrocyclic Chemistry is the premier interdisciplinary publication reporting on original research into all aspects of host-guest systems. Examples of specific areas of interest are: the preparation and characterization of new hosts and new host-guest systems, especially those involving macrocyclic ligands; crystallographic, spectroscopic, thermodynamic and theoretical studies; applications in chromatography and inclusion polymerization; enzyme modelling; molecular recognition and catalysis by inclusion compounds; intercalates in biological and non-biological systems, cyclodextrin complexes and their applications in the agriculture, flavoring, food and pharmaceutical industries; synthesis, characterization and applications of zeolites.
The journal publishes primarily reports of original research and preliminary communications, provided the latter represent a significant advance in the understanding of inclusion science. Critical reviews dealing with recent advances in the field are a periodic feature of the journal.