The application of rapid scan cyclic voltammetry and digital simulation to the study of the mechanism of diphenylamine oxidation, radical cation dimerization, and polymerization in acetonitrile

1991 ◽  
Vol 306 (1-2) ◽  
pp. 87-109 ◽  
Author(s):  
Hongjun Yang ◽  
Allen J. Bard
Keyword(s):  
Cyclic Voltammetry ◽  
Radical Cation ◽  
Digital Simulation ◽  
Rapid Scan

scholarly journals Voltammetric Studies of Anthracen-9-ylmethylene-(3,4-dimethyl-isoxazol-5-yl)-amine Compound at Platinium Electrode

2015 ◽  
Vol 18 (3) ◽  
pp. 177-181 ◽  
Author(s):  
A. A. Al-Owais ◽  
I. S. El-Hallag
Keyword(s):  
Cyclic Voltammetry ◽  
Radical Cation ◽  
Reaction Pathway ◽  
Digital Simulation ◽  
Electrode Reaction ◽  
Simulation Techniques ◽  
Electrochemical Parameters ◽  
Voltammetric Behavior ◽  
Voltammetric Studies

The voltammetric behavior of anthracen-9-ylmethylene-(3,4-dimethyl-isoxazol-5-yl)-amine compound at Platinium electrode has been performed via convolutive cyclic voltammetry and digital simulation techniques using a conventional platinium electrode in 0.1 mol L-1 tetrabutylammonium perchlorate (TBAP) in acetonitrile solvent (CH3CN). The compound loss one electron forming radical cation followed by fast chemical step and the radical cation loss another two electrons producing trication which followed by chemical reaction (ECEC). Cyclic voltammetry and convolutive voltammetry were used for determination of the chemical and the electrochemical parameters of the electrode reaction pathway of the investigated compound. The Electrochemical parameters such as α, ks, Eo , D, and kc of the investigated isoxazol derivative were verified via digital simulation technique. Voltammetric studies of the investigated isoxazol derivative compound under consideration was presented and discussed.

Real-space simulation of cyclic voltammetry in carbon felt electrodes by combining micro X-ray CT data, digital simulation and convolutive modeling

2020 ◽  
Vol 353 ◽  
pp. 136487
Author(s):  
Tim Tichter ◽  
Dirk Andrae ◽  
Jonathan Schneider ◽  
Marcus Gebhard ◽  
André Hilger ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Digital Simulation ◽  
Real Space ◽  
Carbon Felt ◽  
X Ray ◽  
Ct Data ◽  
Felt Electrodes

Cobalt Complexes of Tripodal Hexadentate Ligands: Electrochemically Driven Rearrangements

2006 ◽  
Vol 59 (11) ◽  
pp. 783 ◽  
Author(s):  
Paul V. Bernhardt ◽  
Yang Kim ◽  
Sujandi
Keyword(s):  
Cyclic Voltammetry ◽  
Crystal Structures ◽  
Thermodynamic Analysis ◽  
Chemical Reactions ◽  
Digital Simulation ◽  
Cobalt Complexes ◽  
Tripodal Ligands ◽  
Formal Potential ◽  
Working Electrode ◽  
Kinetic And Thermodynamic Analysis

The CoIII complexes of the hexadentate tripodal ligands HOsen (3-(2´-aminoethylamino)-2,2-bis((2´´-aminoethylamino)methyl)propan-1-ol) and HOten (3-(2´-aminoethylthia)-2,2-bis((2´´-aminoethylthia)methyl)propan-1-ol) have been synthesized and fully characterized. The crystal structures of [Co(HOsen)]Cl3∙H2O and [Co(HOten)](ClO4)Cl2 are reported and in both cases the ligands coordinate as tripodal hexadentate N6 and N3S3 donors, respectively. Cyclic voltammetry of the N3S3 coordinated complex [Co(HOten)]3+ is complicated and electrode dependent. On a Pt working electrode an irreversible CoIII/II couple (formal potential –157 mV versus Ag|AgCl) is seen, which is indicative of dissociation of the divalent complex formed at the electrode. The free HOten released by the dissociation of [Co(HOten)]2+ can be recaptured by Hg as shown by cyclic voltammetry experiments on a static Hg drop electrode (or in the presence of Hg2+ ions), which leads to the formation of an electroactive HgII complex of the N3S3 ligand (formal potential +60 mV versus Ag|AgCl). This behaviour is in contrast to the facile and totally reversible voltammetry of the hexaamine complex [Co(HOsen)]3+ (formal potential (CoIII/II) –519 mV versus Ag|AgCl), which is uncomplicated by any coupled chemical reactions. A kinetic and thermodynamic analysis of the [Co(HOten)]2+/[Hg(HOten)]2+ system is presented on the basis of digital simulation of the experimental voltammetric data.

Digital simulation of cyclic voltammetry on heterogenous electrodes

1991 ◽  
Vol 36 (7) ◽  
pp. 1129-1133 ◽  
Author(s):  
Guillermo Codina ◽  
Gaspar Sanchez ◽  
Antonio Aldaz
Keyword(s):  
Cyclic Voltammetry ◽  
Digital Simulation

Using Digital Simulation to Study Hydroquinone Oxidation on Porous Electrodes by Cyclic Voltammetry

2007 ◽  
Author(s):  
R. H. Carvalho ◽  
M. A. N. D. A. Lemos ◽  
F. Lemos ◽  
F. Ramo^a Ribeiro ◽  
Theodore E. Simos ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Digital Simulation ◽  
Porous Electrodes

scholarly journals Regioselective synthesis of chiral dimethyl-bis(ethylenedithio)tetrathiafulvalene sulfones

2015 ◽  
Vol 11 ◽  
pp. 1105-1111 ◽  
Author(s):  
Flavia Pop ◽  
Narcis Avarvari
Keyword(s):  
Cyclic Voltammetry ◽  
Radical Cation ◽  
Regioselective Synthesis ◽  
Methyl Groups ◽  
Space Group ◽  
Aerial Oxidation

Enantiopure (R,R) and (S,S)-dimethyl-bis(ethylenedithio)tetrathiafulvalene monosulfones have been synthesized by the aerial oxidation of the chiral dithiolates generated from the propionitrile-protected precursors. Both enantiomers crystallize in the orthorhombic chiral space group P212121. They show a boat-type conformation of the TTF moiety, a rather rigid dithiin sulfone ring and the methyl groups in a bisequatorial conformation. Cyclic voltammetry measurements indicate fully reversible oxidation in radical cation and dication species.

Electrochemical Studies of Some Carbazole Derivatives via Cyclic Voltammetry and Convolution – deconvolution Transforms

2011 ◽  
Vol 14 (4) ◽  
pp. 251-258 ◽  
Author(s):  
Abdullah M. Asiri ◽  
Salman A. Khan ◽  
Ibrahim S. El-Hallag ◽  
Ibrahim S. [email protected]
Keyword(s):  
Cyclic Voltammetry ◽  
Reaction Pathway ◽  
Digital Simulation ◽  
Simulation Method ◽  
Electrode Reaction ◽  
Tetraethylammonium Chloride ◽  
Cyclic Voltammetric Study ◽  
Simulation Techniques ◽  
Electrochemical Parameters ◽  
Sequential Electron

Three carbazole chromophores derivatives featuring dicyno, cyano, ethyl acetate and dimethyl acetate groups as an acceptor moiety with a ? – conjugated spacer and N-methyl dibenzo[b]pyrole as donor were investigated electrochemically at a platinum electrode in 0.1 mol/L tetraethylammonium chloride (TEACl) in acetonitrile solvent via cyclic voltammetry, convolution – deconvolution transforms and digital simulation techniques. Cyclic voltammetric study revealed that the presence of a single reversible oxidative peak due to two sequential electron transfer (EE scheme) and unidirectional reductive peak which proceed as ECEC mechanism. The electrode reaction pathway, the relevant chemical and electrochemical parameters of the investigated carbazole chromophores were determined using cyclic voltammetry, convolution- deconvolution transforms and chronoamperograms. The extracted electrochemical parameters and the nature of the electrode reaction were verified & confirmed via digital simulation method.

Untersuchungen an biochemisch wirksamen Ligandensystemen, V

1972 ◽  
Vol 27 (10) ◽  
pp. 1131-1136 ◽  
Author(s):  
P. Barz ◽  
H. P. Fritz
Keyword(s):  
Cyclic Voltammetry ◽  
Radical Cation ◽  
Epr Spectroscopy ◽  
Photoelectron Spectroscopy ◽  
Metal Cations ◽  
Redox Properties ◽  
Neutral Molecule ◽  
Ligand Field ◽  
Ligand Field Spectra

1,2-Dimethylhydrazine co-ordinates to numerous metal cations. The structures of the complexes of Cr, Mn, Co, Ni, Cu, Zn, Cd, Hg and Pt are discussed and the complexing abilities of the 1,2-dimethylhydrazine molecule are determined on the basis of the ligand field spectra of the nickel and the chromium derivative.The results of polarography, cyclic voltammetry and photoelectron spectroscopy yield evidence on the redox properties of the neutral molecule. By means of EPR spectroscopy the nature of the radical products obtained by irradiation of 1,2-dimethylhydrazine, especially of the radical cation, is determined.

Preparation and Spectroscopic Properties of the [Re2(C3S4Se)5]2- Anion Complex and Electrical Conductivities of the Oxidized Species [C3S4Se2- = 1,3-Dithiole-2-selone-4,5-dithiolate(2-)]

1995 ◽  
Vol 50 (11) ◽  
pp. 1748-1752 ◽  
Author(s):  
Takashi Maikawa ◽  
Motohiro Nakano ◽  
Ryuichi Arakawa ◽  
Gen-etsu Matsubayashi ◽  
Wasuke Mori
Keyword(s):  
Cyclic Voltammetry ◽  
Magnetic Susceptibility ◽  
Ir Spectra ◽  
Radical Cation ◽  
Room Temperature ◽  
Spectroscopic Properties ◽  
Anion Complex ◽  
Electrical Conductivities ◽  
Prepared Complex

The dinuclear rhenium(IV) complexes with the C3S4Se-ligand [1,3-dithiole-2-selone-4,5- dithiolate(2-)], [PPh4]2- (1) and [NEt4]2[Re2(C3S4Se)5] (2), were prepared. Complex 2 was oxidized by a reaction with [Fe(C5H5)2][PF6] or [TTF]3[BF4]2 (TTF·+ = the tetrathiafulvalenium radical cation) and by the current-controlled electrolysis to yield [NEt4]x[Re2(C3S4Se)5] (x = 0.15 and 0.5) and [TTF][Re2(C3S4Se)5]. The compounds exhibit electrical conductivities of 3.3 x 10-3 - 9.3 x 10-4 S cm-1 for compact pellets at room temperature. Electrochemical and spectroscopic properties of the complexes are discussed on the basis of cyclic voltammetry and ESR, XPS and IR spectra as well as the magnetic susceptibility of the TTF salt.

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