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Wyniki wyszukiwania dla: BINUCLEAR COMPLEXES
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Heteroleptic cobalt(II)tri-tert-butoxysilanethiolates in search of new biomimetic complexes
PublikacjaW ramach prowadzonych badań mających na celu syntezę układów mimikujących centra aktywne wybranych metaloprotein zostały otrzymane dwa nowe heterlopetyczne tri-tert-butoksysilanotiolany kobaltu(II) w reakcji bimetalicznego kompleksu kobaltu(II) zawierającego już reszty silanotiolanowe z pochodnymi pirydyny: 3,5-dimetylopirydyny i dibenzyloaminy. Otrzymane związki zostały scharakteryzowane strukturalnie za pomocą analizy rentgenostrukturalnej,...
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The new diphosphanylphosphido complexes of tungsten(VI) and molybdenum(VI). Their synthesis, structures and properties
PublikacjaWe report on the reactivity of R2P–P(Li)–PR’2 (R = tBu, iPr, R’ = NEt2, iPr) towards diimido complexes [(dippN)2MCl2·dme] (M = Mo, W and dipp = 2,6-iPr2C6H3). A series of new complexes with diphosphanylphosphido ligands R2P–P–PR’2 were isolated. The solid-state structures of [(dippN)2M(Cl)(1,2-η-iPr2P–P– PiPr2)] (2Mo and 2W) and [(dippN)2M(Cl){1,2-η-tBu2P–P–P(NEt2)2}] (3Mo and 3W) were established by single-crystal X-ray diffraction...
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Phosphanylphosphido and phosphanylphosphinidene complexes of zirconium(IV) supported by bidentate N,N ligands
PublikacjaPhosphanylphosphido complexes of zirconium, [NacNacZrCl2(η2-R2P–PSiMe3)] (R = t-Bu, i-Pr), were synthesized in the reaction of R2P–P(SiMe3)Li·nTHF (R = t-Bu, i-Pr) with a β-diketiminate complex, [NacNacZrCl3], in toluene. Elimination of Me3SiCl from [NacNacZrCl2(η2-R2P–PSiMe3)] provided the phosphanylphosphinidene complexes [NacNacZrCl(η2-R2P–P)] (R = t-Bu, i-Pr). Moreover, the reaction of [NacNacZrCl2(η2-R2P–PSiMe3)] with R2P–P(SiMe3)Li·nTHF...
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Resonance-Raman spectro-electrochemistry of intermediates in molecular artificial photosynthesis of bimetallic complexes
PublikacjaThe sequential order of photoinduced charge transfer processes and accompanying structure changes were analyzed by UV-vis and resonance-Raman spectroscopy of intermediates of a Ru(II) based photocatalytic hydrogen evolving system obtained by electrochemical reduction.
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Probing the Magnetic Anisotropy of Co(II) Complexes Featuring Redox-Active Ligands
PublikacjaCoordination complexes that possess large magnetic anisotropy (otherwise known as zero-field splitting, ZFS) have possible applications in the field of magnetic materials, including single molecule magnets (SMMs). Previous studies have explored the role of coordination number and geometry in controlling the magnetic anisotropy and SMM behavior of high-spin (S = 3/2) Co(II) complexes. Building upon these efforts, the present work...
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Ruthenium(II) and Iridium(III) Complexes as Tested Materials for New Anticancer Agents
PublikacjaThe oncological use of cisplatin is hindered by its severe side eects and a very important resistance problem. To overcome these problems, scientists have attempted to design new generation transition-metal anticancer complexes. In this study, we present new complexes, ruthenium(II) [(6-p-cymene)RuCl(py2CO)]PF6 (1), iridium(III) [(5-Cp)IrCl(py2CO)]PF6 (2), and NH4[IrCl4(py2CO)]H2O (3), based on di-2-pyridylketone (py2CO). The prepared...
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Determination of stability constants of complexes of selected amide ionophores with alkali metal cations
PublikacjaPodano właściwości kompleksujące jony litowców czterech jonoforów typu amidów. Wyznaczono wartości stałych kompleksów z jonów Li+, Na+, K+ metodą potencjometryczną z zastosowaniem elektrod jonoselektywnych stosując dwie różne procedury: 1) stosując jako kation referencyjny TMA+, 2) stosując chromofor kompleksujący H+.
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Complexes of manganese(II) tri-tert-butoxysilanethiolate with chelating N-donor ligands.
PublikacjaTri-tert-butoksysilanotiolan manganu(II) jest związkiem wrażliwym i rozkładającym się w warunkach atmosferycznych. Z tego względu synteza jego pochodnych z chelatującymi zasadami heterocyklicznymi takimi jak 1,10-fenantrolinaza czy 2,2'-bipirydyl wydawał się dogodną metodą otrzymania bardziej stabilnych układów. Otrzymane w ten sposób krystaliczne proszki wykazują znacznie wyższą stabilność temperaturową, możliwe jest więc przechowywanie...
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Structural, physicochemical and anticancer study of Zn complexes with pyridyl-based thiazolyl-hydrazones
PublikacjaThiazolyl-hydrazones (THs) exhibit a wide spectrum of biological activity that can be enhanced by complexation with various metal ions. Zn(II) complexes with α-pyridine-1,3-TH ligands may represent an alternative to the standard platinum-based chemotherapeutics. In addition, they show photoluminescence properties and thus can be regarded as multifunctional materials. In this study, we synthesized and characterized three neutral...
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Comparative analysis of thermodynamic cycles of selected nuclear ship power plants with high-temperature helium-cooled nuclear reactor
PublikacjaThis paper presents a comparative analysis of thermodynamic cycles of two ship power plant systems with a high-temperature helium- cooled nuclear reactor. The first of them is a gas system with recuperator , in which classical gas chamber is substituted for a HTGR reactor (High Temperature Gas-cooled Reactor) . The second of the considered cycles is a combined gas-steam system where working medium flux from gas turbine outlet...
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Current situation in Polish nuclear medicine and Polish example of model Nuclear Medicine Centre meeting European Union requirements
PublikacjaNuclear medicine is currently a well-established part of medicine. It is applied in many fields of clinical medicine and science like endocrinology, oncology, cardiology, molecular medicine and engineering, radiopharmacy, physics and information science. Due to its increasing importance and application, several regulation and supervision bodies have been founded to ensure safe usage of radiation and to improve diagnostic and therapeutic...
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The importance of anchoring ligands of binuclear sensitizers on electron transfer processes and photovoltaic action in dye-sensitized solar cells
PublikacjaThe relatively low photon-to-current conversion efficiency of dye-sensitized solar cells is their major drawback limiting widespread application. Light harvesting, followed by a series of electron transfer processes, is the critical step in photocurrent generation. An in-depth understanding and fine optimization of those processes are crucial to enhance cell performance. In this work, we synthesize two new bi-ruthenium sensitizers...
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Modelling of Nuclear Power Plant Steam Turbine
PublikacjaThe paper describes the approach to a Nuclear Power Plant steam turbine modelling which would enable on-line optimal process control (model based) and diagnosis over wide range of operating conditions caused by changing power demand. Presented model is static, multivariable and nonlinear. Such model enables analyzing the heat cogeneration aspects. Developed model is validated and verified by using archive data gained from researches...
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The analysis of turbine propulsion systems in nuclear submarines
PublikacjaThe article systematises submarines, which are presently in service, according to their propulsion types (both conventional and nuclear), power output, and submersion depth. Contemporary types of propulsion systems installed and used in submarines are discussed. Calculations were performed for the PWR (Pressurized Water Reactor) type nuclear propulsion system and the supercritical turbine propulsion system (supercritical reactor...
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Modelling of Nuclear Power Plant Steam Turbine
PublikacjaThe paper describes the approach to a Nuclear Power Plant steam turbine modelling which would enable on-line optimal process control (model based) and diagnosis over wide range of operating conditions caused by changing power demand. Presented model is static, multivariable and nonlinear. Such model enables analyzing the heat cogeneration aspects. Developed model is validated and verified by using archive data gained from researches...
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Dynamic model of nuclear power plant turbine
PublikacjaThe paper presents the dynamic multivariable model of Nuclear Power Plant steam turbine. Nature of the processes occurring in a steam turbine causes a task of modeling it very difficult, especially when this model is intended to be used for on-line optimal process control (model based) over wide range of operating conditions caused by changing power demand. Particular property of developed model is that it enables calculations...
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Synthesis of novel dinuclear ruthenium polypyridine dye for dye-sensitized solar cells application
PublikacjaA new dinuclear ruthenium(II) polypyridine complex has been successfully synthesized. The new compound has been characterized by spectroscopic and electrochemical methods. Its potential application as a sensitizing dye in dye-sensitized solar cells has been checked under AM 1.5 G irradiation conditions (100 mW cm−2) and its performance was compared to that of a commercially available mononuclear analogous dye. The overall light-to-electricity...
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Nuclear Future
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NUCLEAR TECHNOLOGY
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NUCLEAR FUSION
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Novel complexes possessing Hg–(Cl, Br, I)⋯O=C halogen bonding and unusual Hg₂S₂(Br/I)₄ kernel. The usefulness of τ₄′ structural parameter
PublikacjaOne mononuclear and two binuclear Hg(II) complexes have been synthesized and characterized by X-ray diffraction, ATR IR and Hirshfeld surface analysis. Single-crystal X-ray diffraction showed that binuclear compounds are centrosymmetric and isostructural. All complexes form bifurcated intermolecular N–H···O hydrogen bonds that contribute to a formation of the centrosymmetric dimers. In binuclear complexes, sulfur atoms of thiourea...
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Structural studies on radiopharmaceutical DOTA-minigastrin analogue (CP04) complexes and their interaction with CCK2 receptor
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The site at the cape Zidine in Lopar in the context of coastal residential and commercial complexes of Rab Island
PublikacjaSince 2013, the “Archaeological topography of the island of Rab” project has approached the island’s archaeology holistically and interdisciplinary, tackling all periods and archaeological evidence present on the island. Nevertheless, mostly due to a large amount of new data, a significant segment of research is devoted to Roman residential and production complexes, located either in the island’s fields or along the coast. Thus,...
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Thermal analysis of manganese(II) complexes of general formula (Bu4N)2[MnBrnCl4−n]
PublikacjaBadano termiczną dekompozycję związków zawierających aniony tetrahalogenomanganese(II), [MnBrnCl4−n]2−(n = 0-4) i kationy tetrabutylammonium. Stosowane metody to: DSC, TG-FTIR, TG-MS i DTA. Pomiary prowadzono w argonie i powietrzu w zakresie temperatur 173-450K (DSC) i 300-1073K (TG). Stałe produkty dekompozycji identyfikowano metodami spektroskopii FT-FIR i dyfraktometrii rentgenowskiej.
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Synthesis of Bis(ethylenedithio)dithiadiazafulvalenes (BEDT-DTDAF) and Generation of Charge Transfer Complexes with Tetracyanoquinodimetane
PublikacjaW artykule opisana została synteza Bis(etylenoditio)ditiadiazafulwalenów (BEDT-DTDAF) wykorzystująca jako kluczowe związki przejściowe 4,5-(etylenoditio)tiazol oraz sole 3-aliklo-4,5-(etylenoditio)tiazoliowe oraz generowanie przewodzących kompleksów z przeniesieniem ładunku usyskanych z Bis(etylenoditio)ditiadiazafulwalenów oraz tetracyjanochinodimetanu.
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Thermal analysis of copper(II) complexes of general formula [Et4N]2[CuBrnCl4-n]
PublikacjaBadano dekompozycję termiczną związków składających sie z anionów: [CuBrnCl4-n]2- (n=0-4) i kationów tetrametyloamoniowych. Stosowano następujące metody badawcze: TG-FTIR, TG-MS, DTA i DTG. Pomiary przeprowadzono w atmosferze argonu i powietrza w zakresie temperatur od 293 K do 1073 K. Produkty dekompozycji identyfikowano metoda spektroskopii w podczerwieni (IR i FIR) oraz metodą dyfrakcji promieniowania rentgenowskiego.
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Electric field and charge induced quenching of luminescence in electroluminescent emitters based on lanthanide complexes
PublikacjaW pracy badano ładunkowe i elektrycznopolowe wygaszanie ekscytonóww układzie dwuamina TPD: organiczny kompleks europu przez pomiar zaników fotoluminescencji w zewnętrznym polu elektrycznym.
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Synthesis, coordination properties and biological activity of vanadium complexes with hydrazone Schiff base ligands
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Vanadium complexes with salicylaldehyde-based Schiff base ligands—structure, properties and biological activity
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Thermal analysis of manganese(II) complexes of general formula(Et4N)2[MnBrnCl4−n]
PublikacjaBadano termiczną dekompozycję związków zawierających aniony [MnBrnCl4−n]2− (n = 0-4) i kation tetraetylammonium. Wykorzystywano metody DSC i TG. Badania prowadzono w atmosferze argonu w temperaturze 173-500K (DSC)i 300-1073K (TG). Produkty dekompozycji określono za pomocą MS, FTIR, Far-FTIR i dyfraktometrii rentgenowskiej.
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The Analysis of Hyperfine Shifts of Mono-Ligand High-Spin Cobalt(II) Pyrazolylborate Complexes
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Molecular aspects of biogenesis of Escherichia coli Dr Fimbriae: characterization of DraB-DraE complexes
PublikacjaHemaglutynina Dr uropatogennych szczepów Escherichia coli jest fimbrialnym homopolimerem zbudowanym z podjednostek białkowych DraE kodowanych przez operon dra. Operon dra zawiera geny draB i draC, kodujące białka homologiczne do białek (białko opiekuńcze-białko kanałotwórcze) zaangażowanych w procesie biogenezy struktur polimerycznych eksprymowanych powierzchniowo. Białko DraB jest jednym z białek periplazmatycznych, należącym...
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Binuclear Co(II), Zn(II) and Cd(II) tri-tert-butoxysilanethiolates. Synthesis, crystal structure and spectroscopic studies.
PublikacjaA series of Co(II), Zn(II) and Cd(II) complexes have been synthesized in reaction of respective metal tri-tert-butoxysilanethiolates with pyrazine 1 and 2 and 1,2-bis(2-pyridyl)ethylene 3–5. All compounds have been characterized by single-crystal X-ray structure determination, elemental analysis, FT-IR and thermogravimetry. Obtained complexes are bimetallic with the formula of [M{SSi(OtBu)3}2(μ-L)]2 and metal ions bridged by N,N′-spacer....
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Waves in Random and Complex Media
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Complex Analysis and Operator Theory
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Complex Variables and Elliptic Equations
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Interdisciplinary Studies of Complex Systems
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Interdisciplinary Description of Complex Systems
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Complex Adaptive Systems Modeling
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Complex Systems and Complexity Science
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Mathematics and Mechanics of Complex Systems
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Nonlinear Phenomena in Complex Systems
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Complex Issues of Cardiovascular Diseases
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Complex Analysis and its Synergies
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Design process as complex system
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COMPLEX ISSUES IN ARCHITECTURAL DESIGN
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Multipath Complex Root Tracing
PublikacjaThe problem of multipath root tracing is being addressed in this communication. The self-adaptive complex root tracing algorithm, which was previously utilized for the investigation of various propagation and radiation problems, is analyzed here for the cases when the traced characteristic bifurcates. A procedure of multiroute detection is proposed and demonstrated on the coaxially loaded cylindrical waveguide example.
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Detection of neutrons with LiF fluorescent nuclear track detectors
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LITHIUM FLUORIDE CRYSTALS AS FLUORESCENT NUCLEAR TRACK DETECTORS
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3D imaging of nuclear reactions using GEM TPC
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