A5111440364- Electrochemical Analysis and Applications
- Photochemistry and Electron Transfer Studies
- Inorganic and Organometallic Chemistry
- Analytical Chemistry and Chromatography
- Analytical Chemistry and Sensors
- Radical Photochemical Reactions
- Electrochemical sensors and biosensors
- Spectroscopy and Quantum Chemical Studies
- Molecular Junctions and Nanostructures
- Ionic liquids properties and applications
- Molecular Sensors and Ion Detection
- Free Radicals and Antioxidants
- Phenothiazines and Benzothiazines Synthesis and Activities
- Various Chemistry Research Topics
- Lanthanide and Transition Metal Complexes
- Adsorption, diffusion, and thermodynamic properties of materials
- Mass Spectrometry Techniques and Applications
- Chemical Thermodynamics and Molecular Structure
- Chemical and Physical Properties in Aqueous Solutions
- Molecular spectroscopy and chirality
- History and advancements in chemistry
- Conducting polymers and applications
- Crystallography and molecular interactions
- Electrocatalysts for Energy Conversion
- Radioactive element chemistry and processing
University of Warsaw
1992-2009
Institute of Fundamental Technological Research
1976
Institute of Physics
1973
Polish Academy of Sciences
1973
Acid-base equilibria of aromatic ketyl radicals and their dimers (pinacols) were studied by flash photolysis ketones electrochemical methods. pK values the ketyls found: fluorenone, 9.5; xanthone, 9.8; benzophenone, 9.15; 4-chlorobenzophenone, 9.2. The corresponding pinacols are 13.7, 13.5, 12.6 13.6, respectively. difference in acidity between free is due to different hybridization C atom bonded OH group. Some new data reported on normal red-ox potentials ketone-ketyl anion systems,...
Dimerization equilibria and dismutation kinetics of fluorenone xanthone ketyl radicals were studied by electrochemical methods at various pH. The dimerization equilibrium constant in aqueous-ethanolic solution is 7.1×1011 1.3×1013 M–1 for neutral ketyl, respectively. constants the RH (neutral radical)+R–(radical anion) systems are much lower; those R–+R– negligible. Dismutation resolved into component reactions. Rate RH+R– higher than found RH+RH or support electron-transfer mechanism ketyls.
Abstract The formation of alkali metal cation complexes with 15-crown-5 and benzo-15-crown-5 in ten organic solvents has been investigated by cyclic voltammetry at 25°C. Stability constants the resulting 1 : have determined monitoring shift reduction potentials cations against ligand concentration. Based on results obtained dependences stabilities Gutmann donicity standard Gibbs transfer energies ion from water to a given solvent analyzed discussed.
Abstract Solvent effects on the Hammett ρ value for cathodic reduction of substituted benzophenones were determined. The electrochemistry a series 11 compounds was studied in acetonitrile, acetone, dimethyl sulphoxide, propylene carbonate, N , ‐dimethylformamide, ‐dimethylacetamide, ‐diethylformamide and hexamethylphosphoric triamide. values reversible one‐electron transfer are described by Lewis acid‐base model = − 0.006 AN + 0.003 DN 0.391, where solvent acceptor number donor number.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDo aromatic pinacols oxidize at a mercury electrodeWiktor Kemula, Zbigniew R. Grabowski, and Marek K. KalinowskiCite this: J. Am. Chem. Soc. 1969, 91, 24, 6863–6864Publication Date (Print):November 1, 1969Publication History Published online1 May 2002Published inissue 1 November 1969https://pubs.acs.org/doi/10.1021/ja01052a062https://doi.org/10.1021/ja01052a062research-articleACS PublicationsRequest reuse permissionsArticle...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDisproportionation of (azobenzene)-.cntdot....lithium(1+) ion pairs in dimethylformamideAndrzej Kapturkiewicz and Marek K. KalinowskiCite this: J. Phys. Chem. 1978, 82, 10, 1141–1144Publication Date (Print):May 1, 1978Publication History Published online1 May 2002Published inissue 1 1978https://pubs.acs.org/doi/10.1021/j100499a011https://doi.org/10.1021/j100499a011research-articleACS PublicationsRequest reuse permissionsArticle...