Results 191 to 200 of about 7,821 (247)

Anodic oxidation of diphenylsulphoxide in aprotic solvent

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1974
Abstract The voltammetric behaviour of diphenylselenide has been investigated at a platinum electrode in acetonitrile medium. Evidence for three consecutive anodic peaks can be found in linear potential sweep voltammetry; the responses relative both to the second and to the third one are small in height and poorly defined. The processes corresponding
G. Bontempelli, F. Magno, G. A. Mazzocchin, SEEBER, Renato   +3 more
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Thermochemistry of Benzene Solution in Alcohols, Aprotic Solvents, and Mixtures of Aprotic Solvents with Methanol

Russian Journal of General Chemistry, 2003
The standard enthalpies of solution of benzene at 25°C in alcohols (methanol, 1-propanol, 1-pentanol, 1-decanol), aprotic solvents (1,4-dioxane, acetone, acetonitrile, dimethyl sulfoxide, dimethylformamide, propylene carbonate), and mixtures of methanol with these aprotic solvents were determined.
N. G. Manin, S. Yu. Belichenko, V. P. Korolev   +2 more
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Ionizing Power of Aprotic Solvents

European Journal of Organic Chemistry, 2011
AbstractRate constants for the heterolysis reactions (SN1) of a series of chloro‐diarylmethanes in aprotic solvents (dimethyl sulfoxide (DMSO), acetonitrile, carboxamides, etc.) have been determined conductometrically in the presence of amines or triphenylphosphane, which trap the intermediate ion‐pairs and suppress ion recombination.
Nicolas Streidl, Herbert Mayr
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Sulfolane as a Solvent for Aprotic Electrolytes

ECS Transactions, 2011
Physiochemical and electrochemical properties of sulfolane were tested for potential use as a solvent in lithium batteries. It is considerably less ignitable than solvents used in lithium batteries now. Its higher freezing point can be lowered by additives (Li salts and some other solvents) sufficienty below 0 °C.
Marie Sedlarikova, M. Zatloukal, Jiri Vondrak, P. Dvorak, J. Maca   +4 more
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Ozonolysis of verbenone in aprotic solvents

Mendeleev Communications, 2009
The ozonolysis of verbenone in methylene chloride and acetonitrile at –60 and 0 °C proceeds with cleavage of the double bond and neighbouring σ-bond to give (1 R ,3 S )-acetyl-2,2-dimethylcyclobutane carboxylic acid. The mechanism of the reaction has been proposed.
Olga S. Kukovinets, Tatyana I. Zvereva, Natalya N. Kabalnova, Vakhtang G. Kasradze, Elena V. Salimova, Lyucia R. Khalitova, Marat I. Abdullin, Leonid V. Spirikhin   +7 more
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Electrochemical reduction of benzenesulphenyl chloride in aprotic solvents

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1978
The cathodic behaviour of benzenesulphenyl chloride has been studied at a platinum electrode in acetonitrile by using cyclic voltammetry and controlled potential electrolysis. It has been evidentiated that PhSCl gives rise, in an one-electron reduction process, to PhSSPh and Cl− according to 2PhSCl+2e−→PhSSPh+2Cl− The chloride ions so generated ...
G. Bontempelli, F. Magno, SEEBER, Renato, G. A. Mazzocchin   +3 more
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Catalysis in aprotic solvents. Effect of the polarity of the catalyst.

Tetrahedron Letters, 1981
Abstract The catalytic constants for the n -butylaminolysis of sultones in aprotic-apolar solvents are linearly correlated with a combination of the hydrogen-bonding parameter and the polarity parameter of the catalyst.
CIUFFARIN E, ISOLA M, LEONI, PIERO
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Electrolyte solvation in aprotic solvents

Journal of Power Sources, 1989
Abstract The nature of specific ionsolvent, ionion and solventsolvent interactions is reviewed in the context of their relation to the development of lithium batteries. For aprotic solvents of permittivities > ≈ 15, the “medium effect” has been found to offer insights into basic problems ( e.g.
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Spin-Trapping of the Superoxide Radical in Aprotic Solvents

Free Radical Research Communications, 1991
The superoxide adduct of 5,5-dimethyl-l-pyrroline-N-oxide (DMPO) has been detected by EPR spectroscopy in aprotic solvents using KO2 solubilized in 18-crown-6-ether as a source of superoxide. The EPR hyperfine splitting constants of the DMPO-superoxide adduct were as follows: benzene/toluene (aN = 12.65 G; aH beta = 10.4 G; aH gamma = 1.3 G); heptane ...
K, Reszka, C F, Chignell
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Photochemistry of 5-aminoquinoline in protic and aprotic solvents

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2011
Photophysical properties of 5-aminoquinoline (5AQ) have been investigated in various non-polar and polar (protic and aprotic) solvents using steady state and time resolved fluorescence. In aprotic solvents, the spectral maxima depend on the polarity. However, in protic solvents both the fluorescence intensity as well decay time show decrease depending ...
Jagat P, Bridhkoti, Hirdyesh, Mishra, H C, Joshi, Sanjay, Pant   +3 more
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