Alexey V. Zakharov

Kazan Federal University

*This is an algorithmically generated author record based on publicly available information.

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Kazan Federal University

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Alexey V. Zakharov has a total of 38 co-authors. Here are the top co-authors by number of shared publications:

Valery G. Shtyrlin
Alexander Butlerov Institute of Chemistry, Kazan Federal University, Kazan 420008, Russia
11 shared publications
T. I. Bychkova
Kazan State University
4 shared publications
E. L. Gogolashvili
State University
3 shared publications
A. R. Shakirova
Kazan State University
2 shared publications
E. R. Sadykova
Kazan State University, Kazan
2 shared publications
G. V. Afanas’EVa
Kazan State University
2 shared publications

Latest Publications

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Cited by 13
- 1 July 2017
- Published by Elsevier in Journal of Molecular Liquids
An NMR relaxivity and ESR study of the interaction of the paramagnetic manganese(II) and gadolinium(III) ions with anionic, cationic and neutral water-soluble polymers and their mixtures
by Rustem R. Amirov, Evgenia A. Burilova, Zuleykha T. McMillan, Lyaysan R. Amirova, Anna B. Ziyatdinova, Julia R. Shayimova, Mikhail S. Bukharov, Airat M. Dimiev, Alexei V. Zakharov
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- 1 July 2017
- Published by Elsevier in Journal of Molecular Liquids
An NMR relaxivity and ESR study of the interaction of the paramagnetic manganese(II) and gadolinium(III) ions with anionic, cationic and neutral water-soluble polymers and their mixtures
by Rustem R. Amirov, Evgenia A. Burilova, Zuleykha T. McMillan, Lyaysan R. Amirova, Anna B. Ziyatdinova, Julia R. Shayimova, Mikhail S. Bukharov, Airat M. Dimiev, Alexei V. Zakharov
Cited by 13
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Cited by 34
- 28 November 2011
- Published by Royal Society of Chemistry (RSC) in Dalton Transactions
Complex formation, chemical exchange, species structure, and stereoselective effects in the copper( ii )- l / dl -histidine systems
by Valery G. Shtyrlin, Yulia I. Zyavkina, Edward M. Gilyazetdinov, Mikhail S. Bukharov, Alexander A. Krutikov, Ruslan R. Garipov, Anvar S. Mukhtarov, Alexey V. Zakharov
The formation of copper(II) complexes with L- and DL-histidine (HisH) has been studied by means of pH-potentiometry and spectrophotometry over a wide range of pH (2–14), ligand-to-metal ratio (1 : 1–15 : 1), and temperature (15–55 °C) in aqueous solutions with 1.0 mol dm⁻³KNO₃ as background. Formation constants and spectral characteristics of 13 complex types were found. Fine stereoselective effects have been detected with preferential coordination of two ligands with identical configuration in Cu(His)(HisH)⁺ and opposite configuration in Cu(His)₂. The stereoselective effect for Cu(His)(HisH)⁺ is explained by hydrogen bond formation between the carboxyl and imidazolyl groups of neighboring ligands at cis-arrangement of amino groups (3N_eq-form). The opposite sign of stereoselective effect for Cu(His)₂ is derived from favourable axial coordination of the imidazole group in meso-form with cis-structure (3N_eqN_ax-form). A significant tetrahedral distortion was revealed for the first time in the prevalent cis-isomer of the Cu(L-His)₂ 4N_eq-form. These findings were confirmed by EPR data and DFT computations at the B3LYP/TZVP level. The prevalence of cis-isomers for these complexes has been assigned to the rather strong trans effect of the amino groups. The structures of other detected complexes are briefly discussed on the basis of spectroscopic data. Chemical exchange reactions in the copper(II)- L/DL-hishidine systems have been investigated by the NMR relaxation of water protons. A unique proton exchange reaction with short-term proton dissociation from the coordinated imidazolyl group catalyzed by hydroxide ion was characterised for the first time. The discovered enantioselective effects in the ligand exchange reactions between Cu(His)₂ and HisH or His⁻ species were attributed to the associative substitution mechanism.
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- 28 November 2011
- Published by Royal Society of Chemistry (RSC) in Dalton Transactions
Complex formation, chemical exchange, species structure, and stereoselective effects in the copper( ii )- l / dl -histidine systems
by Valery G. Shtyrlin, Yulia I. Zyavkina, Edward M. Gilyazetdinov, Mikhail S. Bukharov, Alexander A. Krutikov, Ruslan R. Garipov, Anvar S. Mukhtarov, Alexey V. Zakharov
The formation of copper(II) complexes with L- and DL-histidine (HisH) has been studied by means of pH-potentiometry and spectrophotometry over a wide range of pH (2–14), ligand-to-metal ratio (1 : 1–15 : 1), and temperature (15–55 °C) in aqueous solutions with 1.0 mol dm⁻³KNO₃ as background. Formation constants and spectral characteristics of 13 complex types were found. Fine stereoselective effects have been detected with preferential coordination of two ligands with identical configuration in Cu(His)(HisH)⁺ and opposite configuration in Cu(His)₂. The stereoselective effect for Cu(His)(HisH)⁺ is explained by hydrogen bond formation between the carboxyl and imidazolyl groups of neighboring ligands at cis-arrangement of amino groups (3N_eq-form). The opposite sign of stereoselective effect for Cu(His)₂ is derived from favourable axial coordination of the imidazole group in meso-form with cis-structure (3N_eqN_ax-form). A significant tetrahedral distortion was revealed for the first time in the prevalent cis-isomer of the Cu(L-His)₂ 4N_eq-form. These findings were confirmed by EPR data and DFT computations at the B3LYP/TZVP level. The prevalence of cis-isomers for these complexes has been assigned to the rather strong trans effect of the amino groups. The structures of other detected complexes are briefly discussed on the basis of spectroscopic data. Chemical exchange reactions in the copper(II)- L/DL-hishidine systems have been investigated by the NMR relaxation of water protons. A unique proton exchange reaction with short-term proton dissociation from the coordinated imidazolyl group catalyzed by hydroxide ion was characterised for the first time. The discovered enantioselective effects in the ligand exchange reactions between Cu(His)₂ and HisH or His⁻ species were attributed to the associative substitution mechanism.
Cited by 34
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Cited by 6
- 1 May 2006
- Published by Pleiades Publishing Ltd in Russian Journal of General Chemistry
Composition, stability, and structure of Cu(II), Ni(II), and Co(II) complexes with adipic acid dihydrazide in aqueous and aqueous-ethanol solutions
by G. V. Afanas’EVa, T. I. Bychkova, V. G. Shtyrlin, A. R. Shakirova, A. V. Zakharov
Solvation and complexation of Cu(II), Ni(II), and Co(II) with adipic acid dihydrazide (L) in aqueous and aqueous-ethanol solutions (ethanol mole fraction 0.07–0.68) were studied by spectrophotometry....
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- 1 May 2006
- Published by Pleiades Publishing Ltd in Russian Journal of General Chemistry
Composition, stability, and structure of Cu(II), Ni(II), and Co(II) complexes with adipic acid dihydrazide in aqueous and aqueous-ethanol solutions
by G. V. Afanas’EVa, T. I. Bychkova, V. G. Shtyrlin, A. R. Shakirova, A. V. Zakharov
Solvation and complexation of Cu(II), Ni(II), and Co(II) with adipic acid dihydrazide (L) in aqueous and aqueous-ethanol solutions (ethanol mole fraction 0.07–0.68) were studied by spectrophotometry....
Cited by 6
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Cited by 8
- 1 March 2006
- Published by Pleiades Publishing Ltd in Russian Journal of General Chemistry
Complexation and ligand exchange in aqueous of Cu(II) and Ni(II) with hydrazides of some aromatic acids
by G. V. Afanas’EVa, T. I. Bychkova, V. G. Shtyrlin, A. R. Shakirova, R. R. Garipov, Yu. I. Zyavkina, A. V. Zakharov
Solvation and complexation of Cu(II) and Ni(II) with benzoic (L′), p-methoxybenzoic (L″), and isonicotinic (L) acid hydrazides in aqueous-ethanol solutions (ethanol mole fraction 0.07–0.68) were...
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- 1 March 2006
- Published by Pleiades Publishing Ltd in Russian Journal of General Chemistry
Complexation and ligand exchange in aqueous of Cu(II) and Ni(II) with hydrazides of some aromatic acids
by G. V. Afanas’EVa, T. I. Bychkova, V. G. Shtyrlin, A. R. Shakirova, R. R. Garipov, Yu. I. Zyavkina, A. V. Zakharov
Solvation and complexation of Cu(II) and Ni(II) with benzoic (L′), p-methoxybenzoic (L″), and isonicotinic (L) acid hydrazides in aqueous-ethanol solutions (ethanol mole fraction 0.07–0.68) were...
Cited by 8
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Cited by 22
- 1 January 2006
- Published by Elsevier in Chemical Physics
Combined EPR and DFT study of the copper(II) complexes with N-phosphoryl thioureas
by Ruslan R. Garipov, Valery G. Shtyrlin, Damir A. Safin, Yulia I. Zyavkina, Felix D. Sokolov, Alexander L. Konkin, Albert V. Aganov, Alexey V. Zakharov
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- 1 January 2006
- Published by Elsevier in Chemical Physics
Combined EPR and DFT study of the copper(II) complexes with N-phosphoryl thioureas
by Ruslan R. Garipov, Valery G. Shtyrlin, Damir A. Safin, Yulia I. Zyavkina, Felix D. Sokolov, Alexander L. Konkin, Albert V. Aganov, Alexey V. Zakharov
Cited by 22
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Cited by 5
- 1 November 2002
- Published by Wiley in European Journal of Inorganic Chemistry
Thermodynamics of Redox Processes and Kinetics and Mechanism of Electron Self-Exchange Reactions in the Bis(N,N-diethyldithiocarbamato)copper(II)/Iodine/Dichloromethane System
by Valery G. Shtyrlin, Alexey V. Zakharov, Andrey M. Kuznetsov, Ol’ga V. Kukushkina, Pavel P. Chernov
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- 1 November 2002
- Published by Wiley in European Journal of Inorganic Chemistry
Thermodynamics of Redox Processes and Kinetics and Mechanism of Electron Self-Exchange Reactions in the Bis(N,N-diethyldithiocarbamato)copper(II)/Iodine/Dichloromethane System
by Valery G. Shtyrlin, Alexey V. Zakharov, Andrey M. Kuznetsov, Ol’ga V. Kukushkina, Pavel P. Chernov
Cited by 5
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Cited by 27
- 6 August 2002
- Published by American Physical Society (APS) in Physical Review B
EPR, charge transport, and spin dynamics in doped polyanilines
by A. L. Kon’kin, V. G. Shtyrlin, R. R. Garipov, A. V. Aganov, A. V. Zakharov, V. I. Krinichnyi, P. N. Adams, A. P. Monkman
Charge transport and magnetic properties of films of polyaniline (PAN) doped with 10-camphorsulfonic acid and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPSA) have been studied by conductivity, magnetic-susceptibility superconducting quantum interference device measurements, and 3-cm and 8-mm electron paramagnetic resonance (EPR) spectroscopy at doping levels (x) from 0.3 to 0.9 over a temperature range from 15 to 300 K. The temperature dependences of conductivities were explained in terms of the advanced multiphase heterogeneous granular metallic (HGM) model with percolation including disordered metallic (DM) and nonmetallic (NM) phases. The anomalous conductivity change in the $PAN - {AMPSA}_{x}$ system at $T > 240 K$ was accounted quantitatively for a solid-phase equilibrium with the occurrence of the disordered anion phase from the metallic islands. A means for analysis of the EPR line shape in conducting media has been developed and, with this, conductivity and microwave dielectric constants were estimated and two EPR signals, $R_{1}$ and $R_{2},$ were detected in both systems. It was shown that $R_{1}$ signal belongs to pinned radicals of isolated polymer chains, whereas $R_{2}$ is the weight-averaged signal, resulting from three types of paramagnetic centers, localized and mobile spins in the NM and DM phases, which interact via exchange. From the temperature and frequency dependences of the $R_{2}$ linewidth the spin-diffusion parameters for the NM phase in both systems were determined. It was found that the HGM model allows good explanation of both charge transport and spin diffusion in the doped polyaniline films.
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- 6 August 2002
- Published by American Physical Society (APS) in Physical Review B
EPR, charge transport, and spin dynamics in doped polyanilines
by A. L. Kon’kin, V. G. Shtyrlin, R. R. Garipov, A. V. Aganov, A. V. Zakharov, V. I. Krinichnyi, P. N. Adams, A. P. Monkman
Charge transport and magnetic properties of films of polyaniline (PAN) doped with 10-camphorsulfonic acid and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPSA) have been studied by conductivity, magnetic-susceptibility superconducting quantum interference device measurements, and 3-cm and 8-mm electron paramagnetic resonance (EPR) spectroscopy at doping levels (x) from 0.3 to 0.9 over a temperature range from 15 to 300 K. The temperature dependences of conductivities were explained in terms of the advanced multiphase heterogeneous granular metallic (HGM) model with percolation including disordered metallic (DM) and nonmetallic (NM) phases. The anomalous conductivity change in the $PAN - {AMPSA}_{x}$ system at $T > 240 K$ was accounted quantitatively for a solid-phase equilibrium with the occurrence of the disordered anion phase from the metallic islands. A means for analysis of the EPR line shape in conducting media has been developed and, with this, conductivity and microwave dielectric constants were estimated and two EPR signals, $R_{1}$ and $R_{2},$ were detected in both systems. It was shown that $R_{1}$ signal belongs to pinned radicals of isolated polymer chains, whereas $R_{2}$ is the weight-averaged signal, resulting from three types of paramagnetic centers, localized and mobile spins in the NM and DM phases, which interact via exchange. From the temperature and frequency dependences of the $R_{2}$ linewidth the spin-diffusion parameters for the NM phase in both systems were determined. It was found that the HGM model allows good explanation of both charge transport and spin diffusion in the doped polyaniline films.
Cited by 27
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Cited by 16
- 1 March 2002
- Published by Springer Nature in Russian Journal of General Chemistry
Structure, Stability, and Lability of Copper(II) Complexes with Triglycine
by V. S. Ilakin, V. G. Shtyrlin, A. V. Zakharov, A. L. Kon'KIn
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- 1 March 2002
- Published by Springer Nature in Russian Journal of General Chemistry
Structure, Stability, and Lability of Copper(II) Complexes with Triglycine
by V. S. Ilakin, V. G. Shtyrlin, A. V. Zakharov, A. L. Kon'KIn
Cited by 16
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Cited by 1
- 1 September 2001
- Published by Springer Nature in Russian Journal of General Chemistry
Complexation of Ni(II) with Benzoic, p-Methoxybenzoic, and Isonicotinic Acids Hydrazides in Aqueous Acetonitrile
by T. I. Bychkova, V. G. Shtyrlin, E. R. Sadykova, A. V. Zakharov
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- 1 September 2001
- Published by Springer Nature in Russian Journal of General Chemistry
Complexation of Ni(II) with Benzoic, p-Methoxybenzoic, and Isonicotinic Acids Hydrazides in Aqueous Acetonitrile
by T. I. Bychkova, V. G. Shtyrlin, E. R. Sadykova, A. V. Zakharov
Cited by 1
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- 1 June 2001
- Published by Springer Nature in Russian Journal of General Chemistry
Solvation and Complex Formation of Nickel(II) with Benzoic, p-Chlorobenzoic, and p-Methoxybenzoic Hydrazides in Aqueous-Dioxane Media
by T. I. Bychkova, V. G. Shtyrlin, E. R. Sadykova, A. V. Zakharov, Yu. I. Popova
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- 1 June 2001
- Published by Springer Nature in Russian Journal of General Chemistry
Solvation and Complex Formation of Nickel(II) with Benzoic, p-Chlorobenzoic, and p-Methoxybenzoic Hydrazides in Aqueous-Dioxane Media
by T. I. Bychkova, V. G. Shtyrlin, E. R. Sadykova, A. V. Zakharov, Yu. I. Popova

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