A5083500086- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Electrochemical Analysis and Applications
- Conducting polymers and applications
- Organometallic Complex Synthesis and Catalysis
- Molecular Sensors and Ion Detection
- Molecular Junctions and Nanostructures
- Analytical Chemistry and Sensors
- Radical Photochemical Reactions
- Chemical Reaction Mechanisms
- Magnetism in coordination complexes
- Crystallography and molecular interactions
- Sulfur-Based Synthesis Techniques
- Synthesis and Biological Evaluation
- Electrochemical sensors and biosensors
- Crystal structures of chemical compounds
- Metal complexes synthesis and properties
- Bacteriophages and microbial interactions
- Inorganic and Organometallic Chemistry
- Supramolecular Chemistry and Complexes
- Photochemistry and Electron Transfer Studies
- Luminescence and Fluorescent Materials
- Chemical Synthesis and Reactions
- Ferrocene Chemistry and Applications
- Boron Compounds in Chemistry
Czech Academy of Sciences, J. Heyrovský Institute of Physical Chemistry
2016-2025
University of Chemistry and Technology, Prague
1982-2017
Czech Academy of Sciences
1997-2014
University of Pardubice
2009
University of Colorado Boulder
2007
Clarkson University
1999-2006
Gazi University
2006
Graz University of Technology
2005
Unilever (United Kingdom)
2005
Université Toulouse III - Paul Sabatier
2005
The ferrocene derivative (η5-C5H4PPh2)Fe(η5-C5H4COOH) (3), a potential hybrid phosphine ligand with heteroannular soft and hard donor groups, was synthesized in 71% yield from 1-phenyl-1-phospha[1]ferrocenophane by ring opening phenyllithium, followed reaction carbon dioxide acidification. Oxidation of 3 hydrogen peroxide its esterification diazomethane provided the derivatives, oxide 4 methyl ester 5, respectively. new compounds were characterized IR, UV/vis, MS, NMR spectroscopy,...
SYNOPSIS. Ultrathin sections of Sarcocystis miescheriana were studied in the electron microscope. The banana‐shaped body parasite shows a polar ring with conoid at anterior conical pole similar to that S. tenella. Twenty‐two fine fibrils arise from passing radially pellicle. third cell is filled sarconemes converging conoid. Behind their ends center large osmiophilic central granules can be seen. A nucleus posterior double membrane contains small chromatin situated peripherally. Around and...
The Cu II complex of 1,8-bis(2-hydroxybenzyl)-cyclam forms an unexpected variety isomers differing in the mutual orientation substituents on cyclam nitrogen atoms, protonation phenolate pendant, and ligand denticity.
In this article, some new approaches to characterize the carbon paste mixtures and respective electrodes (CPEs) are presented, discussed, critically evaluated. Particular attention has been paid changes of ohmic resistance, relative dependence on composition CPE, materials used, time, position storage. Four types pastes were examined, for interpretation experimental data, a simple model "close-packing spheres" applied. This resembles percolation theory solid matter. our case, however, it is...
Abstract Palladium‐catalyzed Sonogashira cross‐coupling reactions of halopurines 9‐benzyl‐6‐chloropurine ( 2 a ), 9‐benzyl‐8‐bromoadenine b and 9‐benzyl‐2‐chloroadenine c ) with ethynylferrocene 1 gave the corresponding (ferrocenylethynyl)purines 3 a–c in moderate to good yields. Catalytic hydrogenation these alkynes over Pd/C afforded respective saturated [2‐(ferrocenyl)ethyl]purines 4 . The crystal structures , as determined by X‐ray diffraction show interesting solid‐state interactions,...
Eleven new, stable, push-pull systems that feature 4,5-bis[4-(N,N-dimethylamino)phenyl]imidazole and 4,5-dicyanoimidazole as the donor acceptor moieties systematically extended varied π-linker were prepared investigated. Evaluation of measured UV/Vis spectra, electrochemical data (cyclic voltammetry (CV), rotating-disc (RDV), polarography) calculated β γ polarizabilities showed efficient charge transfer (CT) in biimidazole-type chromophores. Push-pull system 27, which features a planar...
Abstract A series of substituted alloxazinium perchlorates has been prepared and tested as catalysts for the oxidation sulfides to sulfoxides with hydrogen peroxide. The logarithms observed rate constants thioanisole correlate Hammett σ substituents on catalysts, well their reduction potentials E 0′ p K R+ values, representing salt/pseudobase equilibrium. stronger electron‐withdrawing substituent, more efficient is catalyst. salts a cyano or trifluoromethyl group in position 8 proved be most...
A synthesis of ethene and ethyne derivatives carrying the anionic −C(BCH3)11- substituent on one or both carbon atoms is described. Two-electron oxidation dianions yielded stable isolable electroneutral title biradicals.
Cyclic voltammetry of 31 icosahedral carborane anions 1-X-12-Y-CB(11)Me(10)(-) at a Pt electrode in liquid SO(2) revealed completely reversible one-electron oxidation even low scan rates, except for the with Y = I, which are oxidized irreversibly up to rate 5.0 V/s, and anion X COOH H, whose is irreversible rates below 1.0 V/s. Relative potentials agree well RI-B3LYP/TZVPP,COSMO significantly less RI-BP86/TZVPP,COSMO or RI-HF/TZVPP,COSMO calculated adiabatic electron detachment energies....
The calix[4]arene skeleton is electrochemically inactive, but it a useful stable frame for building "smart" molecules and supramolecular assemblies. Suitable substitution on the upper (and/or lower) rim leads to unusual surprising properties in this system. Polynitrocalix[4]arenes with reducible nitro groups located at represent multiple redox centers where potential interactions between them focus of interest. title compounds are promising precursors, e.g., design synthesis sensors. In...