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  1. No Access

    Article

    Thermochemistry of Heteroatomic Compounds. Enthalpy of Dissolution and Vaporization of Selected Trimethylsilyl Di- and Tetrathiophosphates

    Enthalpy of vaporization (ΔvapH°) of trimethylsilyl esters of dithio- and tetratiophosphoric acids (RX)2P(S)SSiMe3 (X = O, S) have been determined from the experimentally determined enthalpies of their dissolutio...

    V. V. Ovchinnikov, S. A. Mal’tseva, N. V. Kremleva in Russian Journal of General Chemistry (2019)

  2. Article

    Thermochemistry of heteroatomic compounds: XXIV. Calculation of the formation enthalpy of 2-methoxy-2-oxo-1,3,2-dioxaphoapholane

    V. V. Ovchinnikov, N. R. Muzafarov in Russian Journal of General Chemistry (2009)

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    Thermochemistry of heteroatomic compounds 26.* Calculation of the combustion and formation enthalpy of carbohydrate bicyclophosphites

    The enthalpies of combustion for five noncyclic and cyclic phosphites in the condensed state were calculated from the derived equation ΔHcomb/kJ mol-1 = —860.7 — 107.0(N — n), where N is the number of bonding val...

    V. V. Ovchinnikov, N. R. Muzafarov in Russian Chemical Bulletin (2009)

  4. No Access

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    Thermochemistry of heteroatomic compounds 22. Enthalpies of combustion and formation of alkyl(aryl)arsines and arsenites in the condensed and gaseous phases

    The enthalpies of combustion (ΔH comb) of five primary, secondary, and tertiary alkyl(aryl)arsines in the condensed state were calculated using the equation ΔH comb = −385.8–110.3N

    V. V. Ovchinnikov, N. R. Muzafarov, L. I. Lapteva in Russian Chemical Bulletin (2007)

  5. No Access

    Article

    Thermochemistry of heteroatomic compounds

    The enthalpies of combustion (ΔH comb) of 13 primary, secondary, and tertiary alkylphoshines in the condensed state were calculated using the equation ΔH comb = −860.7 − 107.0N, where N is the number of valent (b...

    V. V. Ovchinnikov, L. I. Lapteva, M. G. Kireev in Russian Chemical Bulletin (2004)

  6. No Access

    Article

    Thermochemistry of heteroatomic compounds

    The enthalpies of solvation of four geometric isomers of 2,5-dimethyl-1-phenyl-1-thioxophosphorinan-4-one in chloroform, nitrobenzene, and methanol were calculated using the enthalpies of vaporization of the i...

    V. V. Ovchinnikov, L. I. Lapteva, E. Yu. Sitnikova… in Russian Chemical Bulletin (2000)

  7. No Access

    Article

    Thermochemistry of heteroatomic compounds

    The vaporization enthalpies (ΔH vap) of 97 primary, secondary, and tertiary alkylphosphines and alkyl(aryl)phosphines with different spatial structures were calculated using the Trouton and Wadso ...

    V. V. Ovchinnikov, L. R. Khazieva, L. I. Lapteva… in Russian Chemical Bulletin (2000)

  8. No Access

    Article

    Dipole moments and structure of some cyclic phosphonic esters

    1. We were the first to determine the group dipole moment of the 4,4,5,5-tetramethyl-2-oxo-1,3,2-dioxaphospholan...

    É. A. Ishmaeva, V. V. Ovchinnikov… in Bulletin of the Academy of Sciences of the… (1978)

  9. No Access

    Article

    Ionization constants and structure of seven- and eight-membered cyclic phosphorous acid derivatives

    The spectral characteristics and ionization constants of some five-, seven-, and eight-membered cyclic arylenephosphorous acids were determined, and a conclusion regarding the effect of the size of the ring on...

    V. V. Ovchinnikov, O. A. Cherkasova… in Bulletin of the Academy of Sciences of the… (1978)

  10. No Access

    Article

    Ionization constants of cyclic derivatives of phosphorus acids in n-propyl alcohol

    1. Ionization constants for various types of cyclic phosphorus acids have been determined in abs. n-propanol. Th...

    V. V. Ovchinnikov, V. I. Galkin… in Bulletin of the Academy of Sciences of the… (1977)

  11. No Access

    Article

    Ionization constants and reactivity of spirophosphoranes with a P-H bond when reacted with diphenyldiazomethane

    1. The potentiometric titration method was used to determine the ionization constants of some spiro- and monocyc...

    V. V. Ovchinnikov, M. A. Pudovik… in Bulletin of the Academy of Sciences of the… (1977)

  12. No Access

    Article

    Investigation of conformational equilibrium in a series of some 1,3-dioxa-2-phosphorinanes

    1. The IR spectra of certain 1,3-dioxa-2-phosphorinanes were studied under conditions of various polarities of t...

    O. A. Raevskii, A. N. Vereshchagin… in Bulletin of the Academy of Sciences of the… (1972)

  13. No Access

    Article

    Dipole moments of cyclic thio- and dithiophosphonates

    The dipole moments of some cyclic thio- and dithiophosphonates were determined and it was postulated that the rings exhibit conformational lability.

    E. A. Ishmaeva, R. A. Cherkasov… in Bulletin of the Academy of Sciences of the… (1971)