A5025503063- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Metal complexes synthesis and properties
- Lanthanide and Transition Metal Complexes
- Inorganic and Organometallic Chemistry
- Magnetism in coordination complexes
- Crystal structures of chemical compounds
- Chemical Thermodynamics and Molecular Structure
- Analytical Chemistry and Chromatography
- Electrochemical Analysis and Applications
- Electron Spin Resonance Studies
- Molecular spectroscopy and chirality
- Synthesis and biological activity
- Organometallic Compounds Synthesis and Characterization
- Chemical and Physical Properties in Aqueous Solutions
- Soil and Unsaturated Flow
- Origins and Evolution of Life
- Metal-Organic Frameworks: Synthesis and Applications
- Crystallography and molecular interactions
- Protein Structure and Dynamics
- Protein Interaction Studies and Fluorescence Analysis
- Organometallic Complex Synthesis and Catalysis
- Methane Hydrates and Related Phenomena
- Synthesis and Reactivity of Sulfur-Containing Compounds
- Free Radicals and Antioxidants
Kazan Federal University
2015-2024
University of Aberdeen
2021
Kazan Scientific Center
2021
Kazan State Medical University
2006
Structural features and dynamical behaviour of the copper(ii) bis-complexes with glycine, d-alanine, d-valine, l-serine, l-aspartic acid, l-glutamic l-lysine, l-proline, sarcosine were studied by combined EPR NMR relaxation methods. The cis trans isomers unambiguously assigned characterized data. It was found that addition a salt background has an influence on cis-trans isomer equilibrium in favour formation isomer. By comparison NMRD, DFT computations, structural data it shown only one...
Four new NiII, CoII, ZnII, and CuII complexes with the promising anti-tuberculosis drug (E/Z)-N′-((5-Hydroxy-3,4-bis(hydroxymethyl)-6-methylpyridin-2-yl)methylene)-isonicotino-hydrazide (LH) were synthesized characterized by structural methods: single-crystal X-ray diffraction, vibrational spectroscopy, mass spectrometry. The ZnII metal ions form only amorphous phases various morphologies according to spectrometry IR spectroscopy. forms a crystalline 1D coordination polymer relative formula...
The formation of copper(II) complexes with L- and DL-histidine (HisH) has been studied by means pH-potentiometry spectrophotometry over a wide range pH (2-14), ligand-to-metal ratio (1 : 1-15 1), temperature (15-55 °C) in aqueous solutions 1.0 mol dm(-3) KNO(3) as background. Formation constants spectral characteristics 13 complex types were found. Fine stereoselective effects have detected preferential coordination two ligands identical configuration Cu(His)(HisH)(+) opposite Cu(His)(2)....
EPR, NMR relaxation methods, and DFT calculations were jointly used to investigate the structural dynamical characteristics of solvation shells copper(II) complexes with iminodiacetic acid, glycylglycine, glycyglycylglycine in comparison bis-glycinate studied previously. A strong trans influence deprotonated peptide nitrogen was revealed EPR spectra parameters oligopeptides. With models experimental NMRD data literature X-ray information, it suggested that only one water molecule coordinates...
Charge transport and magnetic properties of films polyaniline (PAN) doped with 10-camphorsulfonic acid 2-acrylamido-2-methyl-1-propanesulfonic (AMPSA) have been studied by conductivity, magnetic-susceptibility superconducting quantum interference device measurements, 3-cm 8-mm electron paramagnetic resonance (EPR) spectroscopy at doping levels (x) from 0.3 to 0.9 over a temperature range 15 300 K. The dependences conductivities were explained in terms the advanced multiphase heterogeneous...
A new approach providing a direct calculations of equilibrium constants, parameters the chemical exchange reactions, and spectral characteristics complexes on basis data several methods including pH-potentiometry, multi-wavelength electronic spectroscopy, NMR relaxation within single computer program was proposed realized in STALABS. Application STALABS has been demonstrated example investigation complex nickel(II) - L-histidine system by joint usage above three methods.
It was shown that rotational mobility of molecules in crystals is affected by the symmetry their surroundings. A hypothesis proposed for discovered correlation. Three cases are possible location with respect to crystallographic elements: I – a general position; II special positions without disordering; III disordering. According experimental data, rotation barrier heights at and lower than case II. This fact explained amplitude phase shifts energy profiles two parts molecule increasing...
Hydration of the copper(II) bis ‐complexes with glycine, serine, lysine, and aspartic acid was studied by DFT MD simulation methods. The distances between water molecules in 1st 2nd coordination shells, average number their mean residence times hydration shells were calculated. Good agreement observed values obtained those found NMR relaxation Influence functional groups ligands cis – trans isomerism complexes on structural dynamical parameters displayed explained. Analysis trajectories...
Complex formation of copper(II) with glycylglycine (HL) has been studied spectrophotometrically over a wide range ligand concentration (0.005–1.0 mol dm–3) and pH (0.5–13) in aqueous potassium nitrate (1.0 dm–3 KNO3). The complexes [CuL]+, [Cu(HL)]2+, [Cu(LH–1)], [Cu(LH–1)(OH)]–, [Cu(LH–1)L]–, [Cu(LH–1)2]2–, [Cu2(LH–1)2(OH)]– were found their constants determined. [Cu(HL)]2+ is co-ordinated through the carboxylate group, terminal amino group remains protonated. Such co-ordination mode more...
Crystals of four new copper(II) complexes have been grown from acetate/chloride–1-ethyl-3-methylimidazolium acetate/chloride–water systems and characterized by X-ray analysis. The first complex, bis(1-ethyl-3-methylimidazolium) tetra-μ-acetato-bis[chloridocuprate(II)], [Emim] 2 [Cu (C H 3 O ) 4 Cl ] ( 1 (Emim is 1-ethyl-3-methylimidazolium, C 6 11 N ), contains 2− coordination anions with a paddle-wheel structure ionic liquid cations. Two the synthesized are one-dimensional polymers, namely...
Abstract Three new ytterbium complexes of the general formula [YbL 2 Cl 3 ] with expanded aromatic N‐donor based ligands on 1,10‐phenanthroline (dipyrido‐[3,2‐f : 2′,3′‐h]‐quinoxaline (DPQ), 2‐methyldipyrido‐[3,2‐f (MeDPQ) and (Phen)) were synthesized characterized using different structural analysis, simultaneous thermal photoluminescence, UV‐Vis‐NIR spectroscopy. The compounds obtained by reaction ytterbium(III) chloride hexahydrate corresponding through substitution water from...
Ionic liquid (1-ethyl-3-methylimidazolium acetate, [C2C1im][AcO])–copper(II) diacetate monohydrate–water–air (O2) systems have been investigated by 13C NMR, EPR, spectrophotometry, HPLC, and synthetic chemistry methods at different temperatures. The C–H bond activation of [C2C1im]+ with the formation unusual dication 1,1′-diethyl-3,3′-dimethyl-2,2′-biimidazolium ([(C2C1im)2]2+) 50 °C 1-ethyl-3-methyl-1H-imidazol-2(3H)-one (C2C1imO) 50–85 was revealed. Two new complexes above compounds,...