Skip to main content

19 Result(s)

within E. V. Karpova Remove this filter Chemistry Remove this filter

and

  1. No Access

    Chapter and Conference Paper

    Sedimentation studies of specific association of oligonucleosomes from sea urchin sperm chromatin

    It is known that oligonucleosomal chromatin fragments from chicken erythrocytes enriched in inactive genes can self-associate into pseudo-higher-order structures. In this paper, we demonstrate the similar aggr...

    E. V. Karpova, T. N. Osipova, V. I. Vorob’ev in Analytical Ultracentrifugation (1995)

  2. No Access

    Article

    Synthesis and Structure of Acetonitrile Solvates of Copper(II) Monofluoroacetate and Silver(I) Trifluoroacetate, [Cu2(CH2FCOO)4· 2CH3CN](CH3CN) and Ag3(CF3COO)3(CH3CN)2

    Compounds [Cu2(CH2FCOO)4· 2CH3CN](CH3CN) (I) and Ag3(CF3COO)3(CH3CN)2(II) were synthesized and studied by X-ray structural analysis. Crystals Iare monoclinic, space group C2/c, a= 27.854(6), b= 8.286(2), c= 19.42...

    E. V. Karpova, A. I. Boltalin, Yu. M. Korenev… in Russian Journal of Coordination Chemistry (2001)

  3. No Access

    Article

    Crystal Structure and Thermal Stability of Ag3(CHF2COO)3(H2O)2

    X-ray diffraction analysis of [Ag3(CHF2COO)3(H2O)2] revealed that its crystals are orthorhombic: space group Cmca, a = 13.809(4) Å, b = 15.975(2) Å, c = 12.244(2) Å, Z = 8. The thermogravimetric analysis showed t...

    A. I. Boltalin, S. A. Kas'yanov, E. V. Karpova… in Russian Journal of Coordination Chemistry (2004)

  4. No Access

    Article

    Ultrasonic Intensification of Reagent Flotation for Oil-Bearing Effluents

    V. G. Sister, E. V. Karpova, O. V. Abramov in Chemical and Petroleum Engineering (2005)

  5. No Access

    Article

    Acoustic waves in removing organic compounds from effluents

    Methods are considered for treating effluents by reagent flotation and electrocoagulation in ultrasonic (US) fields. Surfactants (SA) in the effluent have only a slight effect on the performance in removing oi...

    V. G. Sister, E. V. Karpova, E. V. Kirshankova in Chemical and Petroleum Engineering (2005)

  6. No Access

    Article

    Calculating pollutant removal from effluent in an acoustic field

    A technological scheme is given for treating effluents that contains ultrasonic stages, together with a method of calculating the treatment line to remove heavy metals, and also a method of calculation for a f...

    E. G. Krivoborodova, V. G. Sister, E. V. Karpova in Chemical and Petroleum Engineering (2005)

  7. No Access

    Article

    Thulium(III) trifluoroacetates Tm(CF3COO)3 · 3H2O and Tm2(CF3COO)6 · 2CF3COOH · 3H2O: Synthesis and crystal structure

    Thulium trifluoroacetate compounds have been synthesized, Tm(CF3COO)3 · 3H2O (I) and Tm2(CF3COO)6 · 2CF3COOH · 3H2O (II). The structure of I has been refined by the Rietveld method on the basis of the structural ...

    S. I. Gutnikov, E. V. Karpova, M. A. Zakharov… in Russian Journal of Inorganic Chemistry (2006)

  8. No Access

    Article

    Use of phosphoric anhydride and metaphoshoric acid for nitration of toluene

    Possibility of obtaining a 2,4-dinitrotoluene-enriched mixture of dinitrotoluenes in a single stage by nitration of toluene at 0°C with a mixture of nitric acid and phosphoric anhydride or metaphosphoric acid ...

    I. V. Morozov, E. V. Karpova, D. M. Palamarchuk… in Russian Journal of Applied Chemistry (2009)

  9. No Access

    Article

    Oxonitrates VO(NO3)3 and MoO2(NO3)2 and nitronium and nitrosonium nitratometallates as nitrating agents

    Dissolution of vanadium in anhydrous HNO3 followed by exposure of the solution in a dessicator over P2O5 gave liquid vanadyl trinitrate (I). The X-ray diffraction analysis of I was carried out for a single crysta...

    I. V. Morozov, E. V. Karpova, D. M. Palamarchuk… in Russian Journal of Inorganic Chemistry (2009)

  10. No Access

    Article

    Reactions of polyfluorinated chalcones with hydrazine hydrate and phenylhydrazine

    Polyfluorinated di-and triarylpyrazolines were synthesized by the reactions of polyfluorinated chalcones with hydrazine hydrate and phenylhydrazine, respectively. Reactions of benzyl-idenepolyfluoroacetophenon...

    K. S. Smuilovich, N. A. Orlova, E. V. Karpova, M. M. Shakirov… in Russian Chemical Bulletin (2010)

  11. No Access

    Article

    Nitrosonium hexachlorostannate: synthesis, crystal structure, and nitrosating activity in the reactions with arylcyclopropanes

    Nitrosonium hexachlorostannate (NO)2[SnCl6] was synthesized by the reaction of NOCl and SnCl4 in CH2Cl2. According to the single-crystal X-ray diffraction analysis data, the structure of (NO)2[SnCl6] consists of ...

    I. V. Morozov, O. B. Bondarenko, E. V. Karpova… in Russian Chemical Bulletin (2010)

  12. No Access

    Article

    Photopolymerization kinetics of a thiol–enol composition determined via recording/playback of a transmission holographic diffraction grating

    The kinetics of thiol–enol photopolymerization of a hybrid composition based on a tetraacrylate monomer and a thiol-siloxane oligomer was studied with the use of a holographic recording of elementary transmiss...

    V. V. Shelkovnikov, D. I. Derevyanko, L. V. Ektova… in Polymer Science Series B (2016)

  13. No Access

    Article

    Trifluoroacetate complexes of 3d elements: Specific features of syntheses and structures

    Data on the syntheses and structures of trifluoroacetates of 3d elements mainly based on our results are reviewed. Specific features of the coordination chemistry of mono-, oligo-, and polynuclear trifluoroacetat...

    I. V. Morozov, E. V. Karpova, T. Yu. Glazunova… in Russian Journal of Coordination Chemistry (2016)

  14. Article

    Erratum to: “Trifluoroacetate complexes of 3d elements: Specific features of syntheses and structures”

    I. V. Morozov, E. V. Karpova, T. Yu. Glazunova… in Russian Journal of Coordination Chemistry (2017)

    Download PDF (66 KB)

  15. No Access

    Article

    Structure and thermal behavior of two bimetallic carboxylates: Cs[M(CCl3COO)3(H2O)3], M = Co, Ni

    Bimetallic trichloroacetates of the composition Cs[M(CCl3COO)3(H2O)3], where (I: M = Co, II: Ni) were synthesized. The structures of these compounds have been determined by the single crystal X-ray diffraction. T...

    E. V. Karpova, M. A. Zakharov, M. G. Medovik in Structural Chemistry (2019)

  16. No Access

    Article

    Synthesis and Crystal Structures of New Potassium Fluorotrifluoroacetatometallates: Kn[M3(µ3-F)(CF3COO)6L3]L' (M = Co, Ni; L = CF3COO–, CF3COOH, H2O; L' = CF3COOH, H2O; n = 1, 2)

    Four new representatives of potassium fluorotrifluoroacetatometallates are synthesized and crystallographically studied: K2[Co3(µ3-F)(CF3COO)6(CF3COO)(CF3COOH)2]·CF3COOH (I), K[Co3(µ3-F)(CF3COO)6(H2O)3]·H2O·2CF3C...

    T. Yu. Glazunova, D. S. Tereshchenko… in Russian Journal of Coordination Chemistry (2021)

  17. No Access

    Article

    Synthesis, Crystal Structure, and Thermal Properties of Metal-Containing Ionic Liquids with Spiro Cations: (Spiro)2MCl4 (Spiro = 2,8-Dioxo-5-azoniaspiro[4.5]decane or 2-Oxo-5-azoniaspiro[4.4]nonane, M = Mn, Ni, Co)

    Metal-containing ionic liquids composed of the 2,8-dioxo-5-azoniaspiro[4.5]decane (MorphOx) and 2-oxo-5-azoniaspiro[4.4]nonane (PyrOx) spiro cations and tetrachlorometallate anions

    M. A. Zakharov, E. A. Vyatchanina… in Russian Journal of Coordination Chemistry (2021)

  18. No Access

    Article

    Cobalt Triflates [Co(H2O)6](CF3SO3)2 and Co(CF3SO3)2: Synthesis, Crystal Structures, Thermal Stability, and Magnetic Properties

    Cobalt triflate hexahydrate [Co(H2O)6](CF3SO3)2 (I) is crystallized from aquos solution. The dehydration of salt I at 200°C in an argon flow affords anhydrous salt Co(CF3SO3)2 (II). The crystal structures of comp...

    E. V. Karpova, M. A. Ryabov, M. A. Zakharov… in Russian Journal of Coordination Chemistry (2022)

  19. No Access

    Article

    Characterization of New Pentanuclear Copper(II) and REE(III) Carboxylate Complexes

    New pentanuclear complexes [Cu3M2(CHF2COO)12(H2O)8]·2H2O, where M = Er (I) and Nd (II), were synthesized by reacting individual copper haloacetates and REE in aqueous solution. The molecular structure of complex

    O. S. Pushikhina, E. V. Karpova, D. A. Tsarev… in Russian Journal of Inorganic Chemistry (2023)