A5053263506- Lanthanide and Transition Metal Complexes
- X-ray Diffraction in Crystallography
- Radioactive element chemistry and processing
- Crystallization and Solubility Studies
- Boron Compounds in Chemistry
- Chemical Thermodynamics and Molecular Structure
- Magnetism in coordination complexes
- Boron and Carbon Nanomaterials Research
- Diamond and Carbon-based Materials Research
- Luminescence Properties of Advanced Materials
- Radiopharmaceutical Chemistry and Applications
- Thermal and Kinetic Analysis
- Sulfur-Based Synthesis Techniques
- Polymer Science and PVC
- Nanofabrication and Lithography Techniques
- Advanced Photocatalysis Techniques
- Nuclear Physics and Applications
- Perovskite Materials and Applications
- Material Properties and Applications
- Organophosphorus compounds synthesis
- Radical Photochemical Reactions
- Catalytic C–H Functionalization Methods
- Coordination Chemistry and Organometallics
- Synthesis and Reactivity of Sulfur-Containing Compounds
- Asymmetric Hydrogenation and Catalysis
Enamine (Ukraine)
2020-2025
National Academy of Sciences of Ukraine
2015-2022
Palladin Institute of Biochemistry
2015-2019
Institute of General and Inorganic Chemistry
2018
Potassium poly(heptazine imide), a carbon nitride based semiconductor with high structural order and valence band potential of +2.2 V vs. NHE, in the presence hole scavengers under visible light irradiation gives corresponding polymeric radical anion, which specific density unpaired electrons reaches 112 μmol g-1. The obtained anion is stable anaerobic conditions for several hours. It was characterized using UV-vis absorption, time resolved steady state photoluminescence spectra. electronic...
Abstract Addition of N -centered radicals to C=C bonds or insertion into C–H is well represented in the literature. These reactions have a tremendous significance, because they afford polyfunctionalized organic molecules. Despite tetrahydroisoquinoline (THIQ) moiety widely occurring natural biologically active compounds, -unsubstituted THIQs as source are not studied. Herein, we report photocatalytic reaction between and chalcones that gives -fused...
A new synthetic procedure for preparing tetrabutylammonium closo-dodecaborate (Bu4N)2B12H12 by the solvent-free pyrolysis of tetrahydroborate Bu4NBH4 has been developed. The also provides isolation pure octahydrotriborate Bu4NB3H8 as a by-product. main advantages route proposed are convenience and utilization readily available starting materials. compounds prepared have characterized NMR IR spectroscopy. Based on DFT calculations normal modes [B3H8]- [B12H12]2- anions, assignment absorption...
Several methods for preparation of closo-decaborate (B10H102- as polyalkylammonium salts) – a key compound synthesis carborane by pyrolysis tetraethylammonium borohydride were examined. The studied reactions included variation decomposition temperature, liquid medium, pressure and reaction time. products analyzed 11B 1H NMR spectroscopy, and, in some cases, IR-spectroscopy. It was found that Et4NBH4 solid state well suspension silicone fluid led to the mixtures (Et4N)2B10H10 (Et4N)2B12H12....
Abstract Novel Yb(III) complex with unsaturated β-diketone methacrylacetophenone and its adduct 1,10-phenanthroline were synthesized characterized by a number of physicochemical methods (chemical thermal analysis, infrared, electronic luminescent spectroscopy). The results obtained indicate the possibility using these compounds as precursors NIR-emitting (near infrared) materials. Keywords: Ytterbium complexunsaturated β-diketoneluminescence
New heterometallic complexes of Nd(III) and Co(II) based on ethylenediaminetetraacetic ethylenediaminedisuccinic acids have been synthesized. The studied by electron absorption spectroscopy, IR-spectroscopy, thermogravimetric analysis. influence a number factors the properties structure heteronuclear is discussed. spectral characteristics homonuclear are compared. A theoretical analysis geometry with ethylenediaminesuccinic acid was carried out semi-empirical PM7 method. It has shown that...
New heterometallic f-d-complexes of Pr (III), Co(II), Zn(II) with aminopolycarboxylic acids (ethylenediaminetetraacetic, ethylenediaminedisuccinic acids) have been synthesized and spectroscopically characterized. It was found that complexes a molar ratio Pr:M3d: EDTA=1:2:2 are formed for ethylenediaminetetraacetic compounds, in the case based on EDDS, heteronuclear compounds equimolar composition Pr: M3d: EDDS = 1: 1 formed. is shown it expedient to carry out synthesis basis mononuclear...
The third generation Buchwald precatalysts Pd(ABP)(Phos)(OMs) (also known as Phos Pd G3)) with XPhos and RuPhos were prepared in multigram scale by a modified procedure (ABP = fragment of C-deprotonated 2-aminobiphenyl, 2-dicyclohexylphosphino-2′,4′,6′-triisopropylbiphenyl, 2-dicyclohexylphosphino-2′,6′-diisopropoxybiphenyl, OMs− CH3SO3−). 1H- 31P-NMR spectra the title complexes some impurities, measured various 1D 2D techniques, analyzed detail. solvent-dependent isomerization...
Pyrolyses of tetraethylammonium and tetrabutylammonium borohydrides were performed. The obtained products examined by 11B NMR spectroscopy. It was shown that formation higher boranes is extremely sensitive to the presence water vapor (2.7-2.8 kPa partial pressure). pyrolysis conditions Et4NBH4 Bu4NBH4 suitable for synthesis salts containing B3H8- B12H122- found optimized. High-yield syntheses Bu4NB3H8 (Bu4N)2B12H12 with developed.
The study shows that traditional methods for synthesizing ortho-carboranes from nido-B10H14 and its complexes (B10H12L2) using donor- acceptor-disubstituted acetylenes yielding low efficiencies (yields 0 - 12%). Attempts to improve yields with ionic liquids silver salts as catalysts were unsuccessful disubstituted acetylenes. However, it has been found the use of mono-substituted (phenylacetylene, ethyl propiolate) in presence reaction B10H12L2 substrates produces high (~90%). This suggests...
Институт общей
The complexation between methyl acetoacetate and certain lanthanides was studied in the mixed ethanol–water solvent (90% ethanol) using electronic absorption spectroscopy. formation of cationic 1:2 type complexes shown at alkalescent medium. Based on energy f–f transitions, interelectronic repulsion parameters (Slater integrals) were determined by a least-square fit effective Hamiltonian comprised electrostatic spin–orbit components nephelauxetic ratio calculated as second-order Slater...
This paper presents the study of mixed-ligand complexes Ln(III), which are used as volatile precursors in CVD processes for preparation lanthanide-containing films and coatings. New acetylacetonate lanthanides (III) with acetic (propionic) acid acetonitrile or dimethylformamide were synthesized investigated by physic-chemical methods analysis (elemental analysis, differential thermal IR spectroscopy, powder X-ray diffraction). Using complexation, properties initial lanthanide β-diketonates...
Mono- and mixed-ligand complexes of La (III) with aliphatic β-ketoesters were synthesized in the solid state. The have general formulas LаL2OH·H2O (L=meacac, etacac, alacac) La(meacac)2X·nCH3OH(X = NO3, CH3COO; n 1, 2). Their composition, structure, thermal properties established by chemical analysis, IR spectroscopy. It is shown that are coordinated to ion bidentate-cyclically into monoligand hydroxocomplexes. Ligand methylacetoacetate an oligomeric structure. They consist cationic...