A graduate of the Faculty of Physics, Mathematics and Natural Sciences, RUDN, Russia(field of study-Chemistry).


A post-graduate student of the Department of Inorganic Chemistry, RUDN. Awarded the academic title of Associate Professor.


Defended her thesis on "Synthesis and study of complex compounds of cobalt, nickel and palladium with oxo derivatives of pyrimidine".

1982 - present

Assistant, researcher, associate professor of the Department of General Chemistry, Faculty of Physics, Mathematics and Natural Sciences, RUDN (30 years of scientific and pedagogical experience).


Associate Professor at the Department of Chemistry, Addis Ababa  University (Ethiopia).


Doctoral student of the Department of General Chemistry.


Defended her doctoral dissertation on "Coordination compounds of d- and f-metals with heterocyclic compounds of pyridine and pyrimidine series" (field of study -  Inorganic Chemistry).


Awarded the academic title of Professor.

2007 - present

Full Professor of the Department of General Chemistry, Faculty of Physics, Mathematics and Natural Sciences, RUDN, Russia. Full  Professor at the Department of Organic Chemistry, The A.N. Kosygin  Technical University of Russia.   (Technology, design, art – part time position).


Awarded  the Certificate of Honor of the Ministry of Education and Science of the Russian Federation for achievements in education and training highly qualified personnel.


Lectures on the following courses:

  • "General and Inorganic Chemistry" (in English)
  • "Spectral methods of analysis" (in English) within the framework of summer schools and      extracurricular courses
  • "General Chemistry"- for  the students of the Faculty of Engineering and Medical Faculty (field of study – “Stomatology”)
  • Holds  laboratory and seminar classes under curriculum of the Department of General Chemistry
  • Creator and head of the author master's program "Chemistry of the environment (in English)


  • Specialist in the field of coordination chemistry and spectroscopy of coordination compounds. The scientific team headed by Olga Kovalchukova have isolated and characterized more than 500 new compounds, studied their properties and areas of their possible application
  • Has a patent for an invention
  • Head of research grants of the Russian Foundation of Basic Research for 10 years
  • 2004, 2005 — Laureate of the “The Moscow Grant” competitions in the field of science and technology in education (2004 and 2005).
  • O.Kovalchukova has made a number of presentations at international conferences and seminars in Russia and abroad: Israel, the Czech Republic, Slovakia, Romania, etc., including plenary and invited papers
  • Member of the Expert Council of the Higher Certification Commission of the Russian Federation for Inorganic Chemistry
  • expert of the Russian Academy of Sciences
  • member of the editorial board of “Butlerov Communications” journal
  • reviewer of articles in scientific journals: " International Research Journal of Pure and Applied Chemistry“; “Journal of Applied Chemical Science international”; “American Chemical Science Journal”
  • Author of more than 180 scientific and methodological works and manuals
  • The citation index for the RINC database is 343, the Hirsch index is 7

Research interests

  • Synthesis and study of physicochemical properties and structure of metal complexes with polyfunctional nitrogen-containing heterocyclic ligands.
  • Combination of experimental approaches (synthesis, study of crystalline and molecular structure, spectral characteristics, ionic and tautomeric transformations, equilibrium of complexation reactions) and theoretical (quantum-chemical modeling) approaches to the description of organic ligands and their metal complexes, construction of “structure-property” correlations, search for possible areas of application of isolated compounds.

Olga Kovalchukova, Svetlana Strashnova

Coordination chemistry of polyoxo-carbocyclic compounds containing one or more neighboring oxo-groups

Reviews in Inorganic Chemistry. 2014.

DOI: 10.1515/revic-2013-0003

Abstract: This is a review of publications concerning the results of X-ray analysis of single crystals and spectrochemical characteristics of metal complexes containing polyoxo-carbocyclic compounds with one or more neighboring oxo-groups. The features of lattice characteristics and coordination modes, depending on the nature of the organic dianion, are shownin this paper. The squarate anions are predominantly involved in monodentate bridging coordination, and the derivatives containing five or six C-atoms in the cycle (croconate and rhodizonate anions) usually form bidentate chelating bridged modes. The stabilization of the crystal lattices of the metal complexes is due to the formation of hydrogen bonds and π - π stackings, which produce self-assembled three-dimensional (3D) structures with cavities and intercalation of some small molecules. The strong interlayer interactions lead to appearance of specific conductometric and magnetic properties, which together with their high thermal stabilities, make the oxocarbon complexes new and perspective materials for electronics and related areas.

Olga V. Kovalchukova

Features of structure, geometrical, and spectral characteristics of the (HL)2[CuX4] and (HL)2[Cu2X6] (X – Cl, Br) complexes.

In Current trends in X-Ray crystallography/ edited by Annamalai Chandrasekaran, 2011

ISBN 978-953-307-754-3

Abstract: The paper overviews the features of spatial structures of anionic halocuprate(II) complexes that are of a great interest for scientists because of the areas of their application. They show a large variety in composition and coordination geometry, and may be presented by mononuclear species or form dimers which can exist separately or be arranged in polymeric chains. Dimeric structures may exist as planar, twisted, or folded fragments. The coordination number of Cu(II) can change from 4 (tetrahedrons with different degrees of tetrahonal distortion or planar square configuration) to 5 (from the square pyramidal to the trigonal-bipyramidal configurations) and even 6 (more or less distorted octahedra). Structures that are more complicated can also exist despite the event they were out of our interest. Among the factors controlling on the type and finer details of coordination mode of Cu(II) there is the nature of the cation which neutralizes the negative charge of halocuprate(II) species, i.e. cation size, shape, flexibility, as well as the ability of formation of H-bonds. The nature of the halide atom (Cl or Br) affects the type of the structure much less. The relationship between the structure and spectral or magnetic properties appeared to be helpful by the prediction of the features of coordination modes, and physical properties as well as possible areas of application.

Kovalchukova O.V., Namichemazi N., Strashnova S.B., Stash A.I., Zuzin I.N.

Complexes of some divalent metals with alcoxy-NNO-azoxy compounds: crystal and molecular structures of С5H12N4O6.

Russian Journal of Inorganic Chemistry. 2016.

DOI: 10.7868/S0044457X16060131

Abstract: Seven new metal complexes with alcoxy-NNO-azoxy compounds were synthesized and isolated in a crystalline state. The crystal and molecular structures of С5H12N4O6 were established by X-ray diffraction. Some spectral criteria of coordination were determined, and the complexation processes in solutions were studied.

Alabada R., Kovalchukova O., Strashnova S., Polyakova I., Sergienko V., Chernyshev V.V.

Crystal structure of poly[μ2-aqua(μ2-4-nitro-2,5,6-trioxo-1,2,5,6-tetrahydropyrimidin-3-olato)-HEMI-μ4-oxalato-barium(II)]

Acta Crystallographica. Section E: Structure Reports Online. 2015.

DOI: 10.1107/S2056989015006520

Abstract: X-ray diffraction data of a coordination polymer of the [Ba (C5HN2O6) (C2O4) 0.5 (H2O) 2] n composition are presented. The coordination sphere of the barium cation includes four oxygen atoms of two 2,5,6-trioxo-1,2,5,6-tetrahydropyridine-3-olate (L) anions, three oxygen atoms of two oxalate anions and three oxygen atoms of water molecules. Due to the formation of a complex system of hydrogen bonds, a three-dimensional supramolecular crystal lattice is formed.

Kovalchukova O.V., Bostanabad A.S., Lobanov N.N., Skarzhevskii Y.A., Rudakova T.A., Strashnov P.V., Zyuzin I.N.

Copper(II) alkyl- and benzylnitrosohydroxylaminates as precursors for the synthesis of copper(I) oxide micro- and nanoparticles of various morphologies

Inorganic Materials. 2014.

DOI: 10.1134/S0020168514110090

Abstract: We describe the thermal decomposition of a number of copper(II) alkyl and benzylnitrosohy droxylaminates via thermostating in polyethylene glycol and 2-dodecyl-1Himidazole for various time intervals. It has been shown, that this process leads to the formation of copper(I) oxide nanoparticles, which have been studied by X-ray diffraction and electron spectroscopy. The thermogravimetric analysis of copper copper nitrosohydroxylaminates (II) was carried out.

Kovalchukova O.V., Do N.D., Strashnova S.B., Zaitsev B.E., Stash A.I.

Crystal and molecular structures of selected oxidative nitration products of aminopyrazine and 2-amino-3-hydroxypyridine

Crystallography Reports. 2014.

DOI: 10.7868/S0023476113060179

Abstract: The crystalline and molecular structures of 2,3,5,6-tetraoxopiperazine (I), crystalline hydrate of 2,3,5,6-tetraoxo-4-nitropyridine ammonium (II), co-crystalite 2,3, 5,6-tetraoxo-4-nitropyridine dimethylammonium chloride and dimethylammonium (III) chloride and 2,6-dioxo-3,5-dinitropyridine ammonium (IV) have been isolated. It has been shown that all heterocycles are flat and are not aromatic, but consist of two conjugated fragments united by simple C-C bonds. In the case of I , short C ··· O contacts (2.841-3.048 Å) play the major role in the formation of the crystal structure, which combine molecules in zigzag two-dimensional chains; while in II-IV, hydrogen bonds forming three-dimensional lattice are of great importance for the formation of crystals .

A series of novel metal complexes Cu (II), Co (II), Ni (II) and Zn (II) with three N-heterocyclic 4-azo-pyrazole-5-one derivatives were isolated and identified by FTIR, 1H NMR, EPR and UV spectroscopy. The crystallographic data for a sodium salt, as well as Co (II) and Cu (II) complexes were obtained. The formation constants of the complexes in ethanol aqueous solutions were calculated. The structures of the yet unstudied metal complexes were proposed on quantum-chemical modeling at the DFT / B3LYP level.
A series of novel transition and rare-earth metals complexes of (Z) -4 - ((1- (benzo [d] thiazol-2-yl) -3-methyl-5-oxo-4,5-dihydro-1H-pyrazole-4 -yl) diazenyl) -1,5-dimethyl-2-phenyl-1H-pyrazole-3 (2H) -one (HL) were isolated and identified by a combination of physicochemical methods of analysis (FT IR, EPR, PMR and UV-VIS spectroscopy ). The crystallographic data for compound [Cu2Cl3 (L) (H2O)] 2 1.5H2O CH2Cl2 were obtained. The compound can exist as a tetramer with two different metal coordination modes of the Cu (II) cation. The coordination polyhedra of two cations can be described as somewhat distorted tetragonal pyramids as well as two other Cu atoms of the tetrameric molecule adopt the trigonal bypyramidal coordination. The bridging chlorine ligands link differently coordinated metal cations. The Quantum-chemical calculations indicate the existence of a ferromagnetic exchange interaction in cation pairs, which is confirmed by t the EPR spectra.
Coordination chemistry of alkyl- and aryl-substituted N-nitrosohydroxylamine compounds has been reviewed. The ways of preparing N-nitrosohydroxylamine derivatives and their metal complexes, their molecular, crystal and electronic structure, spectral criteria of coordination as well as ionic equilibria in solutions, the area of application of N-nitrosohydroxylamine derivatives and their metal complexes are discussed.