Structural, spectral, magnetic and thermal studies of 5-(thiophene-2-ylmethine azo) uracil metal complexes

Abdel‐Monem, Yasser K.; Abouel‐Enein, Saeyda A.

doi:10.1007/s10973-017-6507-x

Cited by 25 publications

(3 citation statements)

References 53 publications

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“…Ratio of cathodic peak currents to anodic peak currents (I C /I a = 0.4 and 0.45 for [Cu(L)(OAc).H 2 O] and [Cu(L) 2 ] respectively) is less than one, which corresponds to a simple one electron process. [ 43–45 ]…”

Section: Resultsmentioning

confidence: 99%

Synthesis, spectral characterization, and antimicrobial evaluation of new imine derived from 3‐methylthiophene‐2‐carboxaldehyde and its Co(II), Ni(II), Cu(II), and Zn(II) metal complexes

Singh

Turk

Dhanda

2021

Applied Organom Chemis

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Some new 1:1 (ML) and 1:2 (ML2) metal complexes of Co(II), Ni(II), Cu(II), and Zn(II) have been synthesized with novel ligand, that is, 4‐(3‐methylthiophene‐2‐ylmethyleneamino)‐3‐mercapto‐6‐methyl‐5‐oxo‐1,2,4‐triazine. Ligand and its metal complexes were characterized on the basis of various physicochemical techniques like elemental analysis, magnetic moment, molar conductance, cyclic voltammetry, and spectroscopic (1H‐NMR, infrared [IR], electronic, fluorescence, and electron spin resonance [ESR]) data. On the basis of these studies, octahedral and square planar geometries have been proposed for Co(II), Ni(II), Zn(II), and Cu(II) metal complexes, respectively. Thermogravimetric analysis (TGA) was carried out to study the thermal decomposition and stability of metal complexes. Electrochemical behavior of Cu(II) complexes have also been explored by cyclic voltammetry. The complexes have shown promising antimicrobial activity when checked by in vitro method against some bacterial and fungal strains. In addition to these studies, quantum mechanical approach was also performed in order to find some structural information of newly synthesized compounds.

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Section: Resultsmentioning

confidence: 99%

Synthesis, spectral characterization, and antimicrobial evaluation of new imine derived from 3‐methylthiophene‐2‐carboxaldehyde and its Co(II), Ni(II), Cu(II), and Zn(II) metal complexes

Singh

Turk

Dhanda

2021

Applied Organom Chemis

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“…The metal complexes were prepared according to the general procedure by mixing equal amounts (0.02 mol) [34][35][36][37] of hot ethanol solution of the ligand (HL) with the same ratio of metal salt (M:L = 1:1 molar ratio). The reaction mixture was refluxed under constant magnetic stirring for 12 h at 80 C. The resulting product was filtered and washed several times with ethanol.…”

Section: Synthesis Of the Metal Complexesmentioning

confidence: 99%

New mononuclear Fe(III), Co(II), Ni(II), Cu(II), and Zn(II) complexes incorporating 4‐{[(2 hydroxyphenyl)imino]methyl}phenyl‐4‐methylbenzenesulfonate (HL): Synthesis, characterization, theoretical, anti‐inflammatory, and molecular docking investigation

Elkanzi

Ali

Hrichi

et al. 2022

Applied Organom Chemis

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Herein, new Fe(III), Co(II), Ni(II), Cu(II), and Zn(II) complexes incorporating 4-{[(2-hydroxyphenyl)imino]methyl}phenyl 4-methylbenzenesulfonate Schiffbase ligand (HL) were designed, synthesized, and characterized. The structure of the new compounds was elucidated based on spectroscopic techniques (nuclear magnetic resonance [NMR], ultraviolet-visible [UV-vis], infrared [IR], mass), magnetic, conductivity, thermal analysis (thermogravimetric analysis [TGA], differential thermal analysis [DTA]) measurements, in addition to complex stoichiometry determination using molar ratio and Job's methods. The new complexes showed an interesting structural variation: square-planar (in the case of NiL), tetrahedral (in the case of CuL), and octahedral (in the case of FeL 2 , CoL 2 , and ZnL 2 ). Furthermore, density functional theory (DFT) calculations were performed to obtain deep insights into the structural features, orbital interactions, and electronic chemical descriptors evaluation.Moreover, the anti-inflammatory behavior of the titled compounds was in vitro investigated. Interestingly, the ZnL 2 complex showed the highest activity, whereas the CuL complex showed the lowest activity compared with the other compounds. In order to ascertain the bioactivity of the present compounds, their efficacy was compared with previously reported compounds showing high activity. The anti-inflammatory activity was supported by molecular docking analysis against cyclooxygenase-2 (COX-2) enzyme (PDB ID: 5IKT), which confirms the bioactivity behavior. The obtained results indicated that the titled compounds could be promising anti-inflammatory candidates.

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“…[NiSAP.Et2NH] and [NiSAP.pip] complexes. Numerous studies have been reported in the literature to prepare nanoparticles in this way [28][29][30][31][32][33][34][35][36][37][38][39]. The particle sizes of low soluble complexes were identified by Scanning Electron Microscope (SEM).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of NiO Nanoparticles by Using Thermal Decompositions of Ni(II) – ONO and ONNO Type Schiff Base Complexes

Öz

BOZKURT

Sopacı

et al. 2022

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Bir ONNO tipi Schiff bazı olan bis-N;N'(salisiliden)-1,3-propandiamin (LH2) ve ONO tipi Schiff bazı olan N(2-hidroksi)salisillaldimin (SAPH2) kullanılarak beş farklı Nikel (II) kompleksi NH3 veya amin varlığında hazırlandı ve bu komplekslerin havada termal bozunması ile NiO nanoparçacıkları elde edildi. Hazırlanan kompleksler ve Schiff bazları, element analizi, IR spektroskopisi, Termogravimetri (TG), 1HNMR ve 13CNMR spektroskopisi, Kütle Spektrometrisi (MS), Atomik absorpsiyon spektrometrisi (AAS), ve Taramalı Elektron Mikroskobu (SEM) ile karakterize edildi. Elde edilen nanoparçacık NiO malzemenin yüzey alanı Brunauer-Emmett-Teller (BET) yöntemi ile ölçüldü. NiO nanoparçacıklarının termal bozunma ürünleri XRD ve SEM teknikleri ile incelendi. SEM incelemeleri, hazırlanan iki kompleksin çözünürlüğünün çok az olması nedeniyle nanopartiküller halinde çöktüğünü gösterdi. Bu sebepten dolayı çözünmeyen komplekslerin termal bozunma sonucunda NiO nanoparçacıklarına dönüştüğü gözlemlendi.

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Structural, spectral, magnetic and thermal studies of 5-(thiophene-2-ylmethine azo) uracil metal complexes

Cited by 25 publications

References 53 publications

Synthesis, spectral characterization, and antimicrobial evaluation of new imine derived from 3‐methylthiophene‐2‐carboxaldehyde and its Co(II), Ni(II), Cu(II), and Zn(II) metal complexes

Synthesis, spectral characterization, and antimicrobial evaluation of new imine derived from 3‐methylthiophene‐2‐carboxaldehyde and its Co(II), Ni(II), Cu(II), and Zn(II) metal complexes

New mononuclear Fe(III), Co(II), Ni(II), Cu(II), and Zn(II) complexes incorporating 4‐{[(2 hydroxyphenyl)imino]methyl}phenyl‐4‐methylbenzenesulfonate (HL): Synthesis, characterization, theoretical, anti‐inflammatory, and molecular docking investigation

Synthesis and Characterization of NiO Nanoparticles by Using Thermal Decompositions of Ni(II) – ONO and ONNO Type Schiff Base Complexes

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