Synthesis, characterization, EPR, electrochemical, and<i>in situ</i>spectroelectrochemical studies of salen-type oxovanadium(IV) and copper(II) complexes derived from 3,4-diaminobenzophenone

Erçağ, Ayşe; Şahın, Musa; Koca, Atıf; Bozkurt, Esat

doi:10.1080/00958972.2013.787530

Cited by 16 publications

(11 citation statements)

References 60 publications

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“…At odd with the similar VOsalen complex, which showed a good correlation of E 1/2 with the solvents DN [17], in the present study, using the same parameters, no linear correlation could be obtained whatsoever. Therefore, it appears that the effect exhibited by the salophen scaffold on vanadium metal is too complicated to allow a simple single parameter correlation, as discussed also in a recent paper [31]. The non-significant variation of oxidation potential observed there is probably due to the naphthalene moiety present in the salophen complex.…”

Section: Electrochemical Measurementsmentioning

confidence: 92%

Investigation of VO–salophen complexes electronic structure

Bertini

Coletti

Floris

et al. 2015

Journal of Inorganic Biochemistry

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Vanadyl N,N′-bis(salicylidene)-o-phenylenediamine (salophen) complexes have been extensively investigated by cyclic voltammetry, UV-visible spectroscopy and theoretical calculations in MeCN, THF (tetrahydrofuran) and DMF (N,N-dimethylformamide), in order to elucidate the overall factors that influence the electronic density of the metal and therefore the properties of these complexes in various applications. Different substituents were introduced into the salophen skeleton to change the vanadium electron density. Results obtained and here presented showed that the substituents influence the metal electronic character in a way that cannot be easily predicted by considering only the electronic effect. Similarly, the solvent polarity or coordination ability affects the metal complex properties in an unpredictable way. Therefore, experimental and theoretical data here collected are a powerful tool to a priori design salophen ligands to obtain vanadyl complexes having the specific electronic properties suitable for desired applications.

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Section: Electrochemical Measurementsmentioning

confidence: 92%

Investigation of VO–salophen complexes electronic structure

Bertini

Coletti

Floris

et al. 2015

Journal of Inorganic Biochemistry

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“…The monoimine ligand (HL) used in complexation reactions was synthesized by us for the first time and presented in our previous study. [26] Its complexes and PL synthesized in this study have not been previously reported in the literature. thermogravimetric analysis (TGA) and differential thermal analysis (DTA) were applied to determine the thermal stability of the synthesized compounds.…”

Section: Introductionmentioning

confidence: 94%

“…HL was synthesized by us for the first time and presented in our previous study. [26] HL: Yield: 85%. Color: orange.…”

Section: Synthesis Of Hlmentioning

confidence: 99%

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Synthesis, characterization, and investigation of some properties of the new symmetrical bisimine Ni(II), Zn(II), and Fe(III) complexes derived from the monoimine ligand

Portakal

Kaya

Demirayak

et al. 2021

Applied Organom Chemis

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The new symmetrical bisimine (ONNO donor, salen type) Ni(II), Zn(II), and Fe(III) complexes were synthesized in one step from metal ions and monoimine ligand (HL: 4-amino-3-{[(2-hydroxynaphthalen-1-yl)methylidene] amino}phenyl)(phenyl)methanone). The complexes were characterized by analytical, spectral, conductance, magnetic, and thermal data. According to these analysis results, while the bisimine ligand, spontaneously forming during complexation, is attached to the metal by two nitrogen atoms and two phenolic oxygen atoms (N 2 O 2 ) in all complexes, in the Fe(III) complex, the fifth coordination is completed by the chlorine molecule. A square pyramidal geometry for [FeLCl] and a square planar geometry for [NiL], [ZnL] were proposed. The three-dimensional structure of [FeLC1] was also evaluated by single-crystal Xray diffraction, and the square pyramidal structure was clearly revealed. The molar conductivity data of the complexes confirmed their nonelectrolytic nature. Poly(imine) (PL) was obtained by the oxidative polymerization reaction of HL, and some of its properties were investigated. The electrochemical properties of the ligand and the complexes were studied by means of cyclic voltammetry. Highest and lowest occupied molecular orbital (HOMO-LUMO) energy levels and electrochemical band gaps were calculated. The thermogravimetric analysis (TGA) and differential thermal analysis (DTA) of the synthesized compounds were carried out. TGA results showed that the thermal stability of the complexes is high. The solid-state electrical conductivities of the iodine doped states of the synthesized compounds were measured by the fourpoint probe technique. PL has approximately 35 times higher electrical conductivity than the HL and complexes. Fluorescence-sensor properties of HL were also investigated and predicted that HL could be a selective fluorescence probe for Pb 2+ .

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“…After that Schiff bases have been worked on by many researchers. These works show that Schiff bases can be used for many purposes [11] such as biosensors [12] optic sensors [13], electro-catalytic [14], antimicrobial [15] inhibitors of corrosion [16]. Besides their sensitivity, metal can lead to electrochemical characterization of many biometalomolecules and metalomolecules [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

A Novel MPTHP Modified Glassy Carbon Sensor Electrode: Investigation of Electrochemical Behaviors and Determination of Cu (II) Ions in Drinking Water Sample

Adir

Yılmaz

Mülazımoğlu

et al. 2019

Asian Review of Environmental and Earth Sciences

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In the present work report, 2-methyl-6-((2-(4-(3-methyl-3-phenylcyclobutyl)thiazol-2yl)hydrazono)methyl) phenol (MPTHP) has been newly synthesized and characterized. The new molecule has been used to modify the glassy carbon (GC) electrode surface through the alcohol oxidation method due to-OH group on its structure. MPTHP modified GC (MPTHP/GC) electrode has been used as a chemical sensor electrode for the quantitative determination of Cu (II) ions. Following the modification process, the surface characterization process of the modified electrode has been carried out by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM). In this work, Cu (II) ions have been quantitatively determined by using differential pulse voltammetry (DPV) technique. A quite low detection limit (based on 3sbl/m) for Cu (II) using developed sensor electrode was found to be as 1.0x10-9 M. For the calibration curve, solutions of Cu (II) ions changing from 1.0x10-9 M to 1.0x10-3 M have been prepared using Britton-Robinson (BR) buffer solution at pH 5. The developed sensor electrode has been applied to tap water sample for the quantitation of Cu (II) ions and the amount of Cu (II) was determined as 4.07 x 10-9 M in this sample.

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Synthesis, characterization, EPR, electrochemical, andin situspectroelectrochemical studies of salen-type oxovanadium(IV) and copper(II) complexes derived from 3,4-diaminobenzophenone

Cited by 16 publications

References 60 publications

Investigation of VO–salophen complexes electronic structure

Investigation of VO–salophen complexes electronic structure

Synthesis, characterization, and investigation of some properties of the new symmetrical bisimine Ni(II), Zn(II), and Fe(III) complexes derived from the monoimine ligand

A Novel MPTHP Modified Glassy Carbon Sensor Electrode: Investigation of Electrochemical Behaviors and Determination of Cu (II) Ions in Drinking Water Sample

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