All Stories

  1. Crystal structure of chlorido{1-(2,3-dimethyl-5-oxido-1-phenyl-1H-pyrazol-2-ium-4-yl-κO)-2-[3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-ylidene-κO]hydrazin-1-ido-κN1}copper(II) from laboratory X-ray po...

    Article • Acta Crystallographica Section E Crystallographic Communications, January 2015, International Union of Crystallography

    Olga Kovalchukova

  2. Bis(N-nitroso-N-pentylhydroxylaminato-κ2O,O′)copper(II)

    Article • Acta Crystallographica Section E Structure Reports Online, March 2014, International Union of Crystallography

    Olga Kovalchukova

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

    Article • Reviews in Inorganic Chemistry, March 2014, De Gruyter

    Olga Kovalchukova

  4. Synthesis, spectral and crystallographic studies of coordination compounds of some d and f metals with N-nitrozo-N-(methyl)ethylhydroxylamine

    Article • Russian Journal of Inorganic Chemistry, March 2014, Pleiades Publishing Ltd

    Olga Kovalchukova

  5. Diaquabis[N-(2-fluorobenzyl)-N-nitrosohydroxylaminato-κ2O,O′]nickel(II)

    Article • Acta Crystallographica Section E Structure Reports Online, February 2014, International Union of Crystallography

    Olga Kovalchukova

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

    Article • Crystallography Reports, January 2014, Pleiades Publishing Ltd

    Olga Kovalchukova

  7. Hexaaquabis[3,5-bis(hydroxyimino)-1-methyl-2,4,6-trioxocyclohexanido-κ2N3,O4]barium tetrahydrate

    Article • Acta Crystallographica Section E Structure Reports Online, October 2013, International Union of Crystallography

    Olga Kovalchukova

  8. Electron density, electrostatic potential, and spatial organization of ammonium hydrooxalate oxalic acid dihydrate heteromolecular crystal from data of diffraction experiment at 15 K using synchrotron radiation and theoretical calculations

    Article • Russian Chemical Bulletin, August 2013, Springer Science + Business Media

    Olga Kovalchukova, Professor Vladimir G Tsirelson

  9. catena-Poly[ammonium [aquabis(μ-2,3,5,6-tetraoxo-4-nitropyridin-4-ido)argentate(I)]]

    Article • Acta Crystallographica Section E Structure Reports Online, July 2013, International Union of Crystallography

    Olga Kovalchukova

  10. Coordination compounds of some d metals with nitrophenylhydrazone oxopyridine (pyrimidine) derivatives: Crystal and molecular structure of C10H9N5O6

    Article • Russian Journal of Inorganic Chemistry, April 2013, Pleiades Publishing Ltd

    Olga Kovalchukova

  11. Hexaaquacobalt(II) and hexaaquacadmium(II) 4-nitro-2,3,5,6-tetraoxopyridinates [M(H2O)6](C5HN2O6)2 · 2H2O (M = Co and Cd): Synthesis, structures, and properties

    Article • Russian Journal of Coordination Chemistry, March 2013, Pleiades Publishing Ltd

    Olga Kovalchukova

  12. Crystal and molecular structures of 3-amino-4-hydroxy benzenesulfonamide and its hydrochloride: Quantum-chemical study of their tautomerism

    Article • Crystallography Reports, March 2013, Pleiades Publishing Ltd

    Olga Kovalchukova

  13. Synthesis, characterization, spectroscopic and crystallographic investigation of metal complexes of N-benzyl-N-nitrosohydroxylamine

    Article • Open Journal of Inorganic Chemistry, January 2013, Scientific Research Publishing, Inc,

    Olga Kovalchukova

  14. Crystal and Molecular Structure, and Spectral Characteristics of Sodium 3,5-Bis(Hydroxyimino)-1-Methyl-2,4,6-Trioxocyclohexanide

    Article • Crystal Structure Theory and Applications, January 2012, Scientific Research Publishing, Inc,

    Olga Kovalchukova

  15. Complex compounds of a series of d metals with rubazinic acid (HRub). Crystal and molecular structure of [Co(H2O)6](NO3)2 · 2HRub

    Article • Russian Journal of Coordination Chemistry, October 2010, Pleiades Publishing Ltd

    Olga Kovalchukova

  16. Synthesis and the crystal and molecular structures of (H3 L · Cl)[CoCl4] and H2 L[CuBr4] (L is 2,4,6-Tri(N,N-dimethylamino)methylphenol)

    Article • Crystallography Reports, May 2010, Pleiades Publishing Ltd

    Olga Kovalchukova

  17. Copper(II), iron(III), and chromium(III) complexes with 5,10-dioxo-4,5,9,10-tetrahydro-4,9-diazapyrene derivatives

    Article • Russian Journal of Inorganic Chemistry, May 2010, Pleiades Publishing Ltd

    Olga Kovalchukova

  18. Synthesis and the crystal and molecular structures of 4-(piperidyl-1)-2-phenylpyrido[2,3-a]anthraquinone-7,12 Mono- and dibromohydrates (HL)Br · 3H2O and (H2 L)Br2 · 3H2O

    Article • Crystallography Reports, January 2009, Pleiades Publishing Ltd

    Olga Kovalchukova

  19. Synthesis, spectral characteristics, and the crystal and molecular structures of 2,3-dimethyl-1-phenyl-4-(N-phthalimido)pyrazolone-5

    Article • Crystallography Reports, November 2008, Pleiades Publishing Ltd

    Olga Kovalchukova

  20. Synthesis, structure, geometrical, and spectral characteristics of the (HL n )2[CuCl4] complexes. Crystal and molecular structure of bis(2-methylimidazolium) tetrachlorocuprate(II)

    Article • Russian Journal of Coordination Chemistry, October 2008, Pleiades Publishing Ltd

    Olga Kovalchukova

  21. Complexation of 2,3-dihydroxyquinaline with some bivalent d metals. Crystal and molecular structures of 2,3-dihydroxyquinoline

    Article • Russian Journal of Coordination Chemistry, October 2008, Pleiades Publishing Ltd

    Olga Kovalchukova

  22. Interaction of copper(II) halides with 4-(piperidyl-1)-2-phenylpyrido[2,3-a]anthraquinone-7,12 (L) in acidic media: Crystal structure and spectral characteristics of (HL)2[Cu2Cl6] and (HL)[CuBr2]

    Article • Crystallography Reports, May 2008, Pleiades Publishing Ltd

    Olga Kovalchukova

  23. Synthesis and physicochemical properties of the d metal complexes with 2-phenyl-4-(piperidyl-1)-pyrido[2,3-a]anthraquinone. The molecular and crystal structures of 2-phenyl-4-(piperidyl-1)-pyrido[2,3-a]anthraquinonium-7,12 tetranitrozincate

    Article • Russian Journal of Coordination Chemistry, November 2007, Pleiades Publishing Ltd

    Olga Kovalchukova

  24. Interaction of copper(II) halides with 4-azafluorene derivatives in neutral and acid media. Crystal and molecular structure of 4-aza-9-oxofluorenium tetrabromocuprate hydrate (HL4)2CuB4 · H2O

    Article • Russian Journal of Inorganic Chemistry, May 2007, Pleiades Publishing Ltd

    Olga Kovalchukova

  25. Synthesis and Physicochemical Properties of d- and f-Metal Complexes with Alloxan

    Article • Russian Journal of Coordination Chemistry, January 2004, Springer Science + Business Media

    Olga Kovalchukova

  26. Complexes of d and f Metals with 2-Methyl-3-hydroxy(amino)pyrido[1,2-a]pyrimidine-4-one. Crystal Structure of 2-Methyl-3-hydroxypyrido[1,2-a]pyrimidine-4-one

    Article • Russian Journal of Coordination Chemistry, December 2003, Springer Science + Business Media

    Olga Kovalchukova