A5022330233- Radiopharmaceutical Chemistry and Applications
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Radioactive element chemistry and processing
- Lanthanide and Transition Metal Complexes
- Medical Imaging and Pathology Studies
- Medical Imaging Techniques and Applications
- Fluorine in Organic Chemistry
- Chemical Thermodynamics and Molecular Structure
- Organometallic Complex Synthesis and Catalysis
- Inorganic Fluorides and Related Compounds
- Metal complexes synthesis and properties
- Chemical Synthesis and Characterization
- Organometallic Compounds Synthesis and Characterization
- Molten salt chemistry and electrochemical processes
- Crystallography and molecular interactions
- Catalysis and Oxidation Reactions
- Inorganic and Organometallic Chemistry
- Extraction and Separation Processes
- Nuclear Materials and Properties
- Polymer Synthesis and Characterization
- Chemical Reactions and Isotopes
- Neutrino Physics Research
- Zeolite Catalysis and Synthesis
- Graphite, nuclear technology, radiation studies
V. G. Khlopin Radium Institute
2015-2024
National Research Nuclear University MEPhI
2022-2024
St Petersburg University
2017-2024
Technetium(I) and rhenium(I) pentacarbonyl complexes with ethyl 2-isocyanoacetate methyl 11-isocyanoundecanoate, [M(CO)5(CNCH2COOEt)]ClO4 (M = Tc (1) Re (2)) [M(CO)5(CN(CH2)10COOMe)]ClO4 (3) (4)), were prepared characterized by IR, 1H NMR, 13C{1H} NMR spectroscopy. The crystal structures of 1 2 determined using single-crystal X-ray diffraction. kinetics thermal decarbonylation technetium 3 in ethylene glycol was studied IR rate constants activation parameters this reaction compared those for...
Technetium(I) 2 + 1 tricarbonyl complexes with a combination of N,N-bidentate ligands (2,2'-bipyridine, bipy; 1,10-phenanthroline, phen) and ethyl isocyanoacetate were prepared characterized by NMR, IR, UV/visible, luminescence spectroscopies high-performance liquid chromatography (HPLC). The crystal structures [99Tc(CO)3(bipy)(CNCH2COOEt)](ClO4) (in the form solvate 0.5CH2Cl2) [99Tc(CO)3(phen)(CNCH2COOEt)](ClO4) an adduct outer-sphere phen molecule) determined single-crystal X-ray...
Technetium(I) tetracarbonyl complexes with diethyldithiocarbamate and methylxanthate ligands [TcL(CO)(4)] (L = S(2)CNEt(2) S(2)COMe) were prepared. Conditions required for the formation of these found. The crystal molecular structure xanthate complex was determined by single-crystal X-ray diffraction. [Tc(S(2)CNEt(2))(CO)(4)] undergoes decarbonylation both in solution course vacuum sublimation a dimer [Tc(S(2)CNEt(2))(CO)(3)](2) whose In donor solvents, [Tc(S(2)COMe)(CO)(4)] undergo...
A preparation of [99TcH(CO)5] as a neat liquid or solution in hydrocarbon solvent by treatment [99TcBr(CO)5] with Na[BH4] an organic solvent–water mixture is presented. was characterized 1H and 99Tc NMR spectroscopy, IR EI MS. The reactivity studied. It reacts readily strong acids such HClO4 F3CCOOH to form [99Tc(ClO4)(CO)5] [99Tc(O2C–CF3)(CO)5], respectively, but does not react weak HCOOH. moderately resistant atmospheric oxygen more air-sensitive the form, gradually transforming into...
Myocardial perfusion imaging is an established Nuclear Medicine investigation. Current myocardial agents sestamibi and tetrofosmin have number of drawbacks; low heart uptake coupled with into the surrounding tissues leads to a poorer image quality. There need for continued research designing evaluating potentially superior agents. Tri-carbonyl-technetium rhenium complexes were prepared by combination mono-dentate bi-dentate ligands. Complexes characterized HPLC, MAS, nuclear magnetic...
The procedure of the directed synthesis N‐vinylpyrrolidone‐N‐vinylformamide (VP‐VFA) copolymers with grafted iminodiacetate (IDA) chelating units is presented. methods for labelling resulting conjugates indium‐113m were developed. metal‐copolymer characterized by different physicochemical methods, including IR and NMR, viscometry, light scattering, exclusion high‐performance liquid chromatography. Parameters radiochemical labelled optimized. It was shown that VP‐VFA‐IDA copolymer firmly...
Reaction of [99Tc(CO)6]ClO4 with alkali in aqueous solutions yields yellow 99Tc3H(CO)14 as the major product. On other hand, [99TcH(CO)5] becomes product when reaction is combined extraction into hexane. The molecular structure 99Tc3H(CO)14, determined by SCXRD, composed 99Tc2(CO)9 fragment bound to 99Tc(CO)5 via hydrogen bridge and weak metal-metal bond. This compound crystallizes monoclinic system, space group P21/n, a = 9.6954(2) Å, b 15.0985(3) c 14.5090(3) β 104.925(2)°. was...
The title compound, [Tc(CO) 6 ]ClO 4 , was synthesized by the reaction of [TcCl(CO) 5 ] with AgClO followed acidification HClO under a CO atmosphere. + cation has close to idealized octahedral geometry, bond angles between cis -CO groups 90° and Tc—C lengths in range 2.025 (3)–2.029 (3)Å. perchlorate anion is disordered over two crystallographically equivalent half-occupied positions. Tc atom located on an inversion centre.
Technetium pentacarbonyl fluoride [TcF(CO)5] was prepared for the first time by reaction of [TcI(CO)5] with solid AgF in a dichloromethane solution at -23 °C. Low temperature crystallization resulting compound glass vial yielded an unusual complex [Tc(CO)3(OH)0.49F0.51]4·[Tc(CO)5(BF4)] characterized single crystal XRD.