scholarly journals On the differential capacity and pzc of Au(111) in some aprotic solvents

2021 ◽  
Author(s):  
Ahmed S. Shatla ◽  
Manuel Landstorfer ◽  
Helmut Baltruschat
Keyword(s):  
Aprotic Solvents ◽  
Differential Capacity

Solvation of ions by dipolar aprotic solvents and water. A CNDO/2 study

1985 ◽  
Vol 50 (11) ◽  
pp. 2493-2508 ◽  
Author(s):  
Petr Kyselka ◽  
Zdeněk Havlas ◽  
Ivo Sláma
Keyword(s):  
Binary Mixtures ◽  
Quantum Chemical ◽  
Chemical Method ◽  
Molecular Structures ◽  
Dimethyl Sulphoxide ◽  
Ternary Mixtures ◽  
Aprotic Solvents ◽  
Quantum Chemical Method ◽  
Solvation Of Ions ◽  
Dipolar Aprotic Solvents

Solvation of Li+, Be2+, Na+, Mg2+, and Al3+ ions has been studied in binary mixtures with dimethyl sulphoxide, dimethylformamide, acetonitrile and water, and in ternary mixtures of the organic solvents with water. The CNDO/2 quantum chemical method was used to calculate the energies of solvation, molecular structures and charge distributions for the complexes acetonitrile...ion (1:1, 2:1, 4:1), dimethyl sulphoxide...ion (1:1), dimethylformamide...ion (1:1), and acetonitrile (dimethyl sulphoxide, dimethylformamide)...ion...water (1:1:1).

Oxidation of (1-hydroxybenzyl)ferrocene and its derivatives substituted in phenyl ring with bis(triphenylsilyl) chromate

1982 ◽  
Vol 47 (12) ◽  
pp. 3375-3380 ◽  
Author(s):  
Jaroslav Holeček ◽  
Karel Handlíř ◽  
Milan Nádvorník ◽  
Milan Vlček
Keyword(s):  
Linear Dependence ◽  
Rate Constants ◽  
Oxidation Rate ◽  
Phenyl Ring ◽  
Equilibrium Constants ◽  
Aprotic Solvents ◽  
Protonation Equilibrium ◽  
Oxidation Of Alcohols ◽  
Hammett Σ Constants ◽  
Sulphuric Acid Medium

Kinetics have been studied of oxidation of (1-hydroxybenzyl)ferrocenes substituted in phenyl ring with bis(triphenylsilyl) chromate in benzene solutions as well as protonation of these alcohols in sulphuric acid medium. Logarithms of the oxidation rate constants (kobs, 20-40 °C) and those of the protonation equilibrium constants (KR+, 25 °C) show linear dependence on the Hammett σ constants, the ρ constant values being -0.86 to -0.40 and -2.50, respectively. These negative values suggest that the both processes are influenced by the same effects and confirm the mechanism proposed earlier for oxidation of alcohols with ferrocenyl substituent by action of bis(triphenylsilyl) chromate in aprotic solvents.

1H and 13C NMR spectra of 2,2’-disubstitutedtrans-azobenzenes suitable for preparation of metallized azo dyes

1991 ◽  
Vol 56 (10) ◽  
pp. 2160-2168 ◽  
Author(s):  
Josef Jirman
Keyword(s):  
Nmr Spectra ◽  
Electron Pair ◽  
Phenyl Group ◽  
Aprotic Solvents ◽  
1H And 13C Nmr ◽  
Predominant Form ◽  
Rapid Equilibrium ◽  
Dipolar Aprotic Solvents ◽  
Free Electron Pair ◽  
C Nmr

The 1H and 13C NMR spectra have been measured of six trans-azobenzenes substituted at 2 and 2’ positions with substituents favourable for complex formation with a metal (OH, NH2, NHCOCH3, COOH). From the standpoint of NMR such substituted trans-azobenzenes are present in solution in a rapid equilibrium following from rotation around the bond between C-1 of phenyl group and N atom of azo linkage. The predominant form has the substituent in the syn-position with respect to the free electron pair of the nearer azo nitrogen atom. The equilibrium is affected by dipolar aprotic solvents (such as hexadeuteriodimethyl sulfoxide) by decreasing the presence of the predominant form by 1 to 11%.

The excited state behaviors of 3-(benzo[d]thiazol-2-yl)-2-hydroxy-5-methoxybenzaldehyde system in aprotic solvents

2021 ◽  
pp. 111280
Author(s):  
Junyu Li ◽  
Shiquan Feng ◽  
Xuechao Feng ◽  
Jie Wu ◽  
Liancai Xu
Keyword(s):  
Excited State ◽  
Aprotic Solvents

Integration of the aprotic CO2 reduction to oxalate at a Pb catalyst into a GDE flow cell configuration

2021 ◽  
Author(s):  
Maximilian König ◽  
Shih-Hsuan Lin ◽  
Jan Vaes ◽  
Deepak Pant ◽  
Elias Klemm
Keyword(s):  
Oxalic Acid ◽  
Co2 Reduction ◽  
Flow Cell ◽  
Aprotic Solvents ◽  
Cell Configuration ◽  
Carbon Neutral

The electrochemical CO2 reduction to oxalic acid in aprotic solvents could be a potential pathway to produce carbon-neutral oxalic acid. One of the challenges in the aprotic CO2 reduction are...

Electrochemical tools to disclose the electrochemical reduction mechanism of CO2 in aprotic solvents and ionic liquids

2021 ◽  
pp. 115411
Author(s):  
Silvia Mena ◽  
Esteve Ribas ◽  
Clara Richard ◽  
Iluminada Gallardo ◽  
Jordi Faraudo ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Electrochemical Reduction ◽  
Aprotic Solvents ◽  
Reduction Mechanism

ChemInform Abstract: REACTION OF 4-NITROBENZIL WITH CYANIDE ION IN APROTIC SOLVENTS

1974 ◽  
Vol 5 (41) ◽  
Author(s):  
W. C. REARDON ◽  
J. E. WILSON ◽  
J. C. TRISLER
Keyword(s):  
Aprotic Solvents ◽  
Cyanide Ion
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