Skip to main content

16 Result(s)

within A. I. Tolmachev Remove this filter Chemistry/Food Science, general Remove this filter

and

  1. No Access

    Article

    Synthesis, molecular, and crystal structure of 3,4-bis[(2,6-di-tert-butyl-4H-pyran-4-ylidene)methyl]cyclobut-3-ene-1,2-dione and -1,2-dithione

    Two new dyes have been prepared, 3,4-bis[(2,6-di-tert-butyl-4H-pyran-4-ylidene)methyl]-cyclobut-3-ene-1,2-dione and -1,2-dithione. Their molecular and crystal structures have been studied by X-ray diffraction, an...

    A. I. Tolmachev, V. V. Kurdyukov, Yu. G. Vlasenko… in Russian Journal of General Chemistry (2013)

  2. No Access

    Article

    Formation of frontier orbitals and the nature of electron transitions in dication-polyenes, analogs of cyanine dyes

    By spectral and quantum chemical methods the nature of the electron transitions in three types of linear conjugated compounds including polyenes, their dications, and polymethine cations containing indolenine ...

    A. D. Mel’nik, A. D. Kachkovskii, M. A. Kudinova… in Russian Journal of General Chemistry (2009)

  3. No Access

    Article

    Synthesis and structures of benzo[cd]furo[2,3-f]indol-4(5H)-one derivatives

    A procedure was developed for the synthesis of derivatives of the new heterocyclic system, benzo[cd]furo[2,3-f]indole, based on the cyclodehydration of 6-acylmethyloxy-1-alkyl-benzo[cd]indol-2(1H)-ones. Either 7-...

    I. G. Davydenko, Yu. L. Slominskii, O. I. Kalchenko… in Russian Chemical Bulletin (2008)

  4. No Access

    Article

    Fluorescence Properties of Thiacarbocyanine Dyes at Low Temperatures

    Measurements were carried out for time-resolved fluorescence spectra of dye solutions containing thiacarbocyanine and its derivatives with ethylene and vinylene bridges in the polymethine chain. At low tempera...

    Yu. P. Piryatinskii, V. G. Nazarenko… in Theoretical and Experimental Chemistry (2003)

  5. No Access

    Article

    Formations, analysis of cyanine dyes by means of the nuclear Overhauser effect

    The conformational composition of monomethine- and trimethinecyanine dyes containing pyrylium, thiopyrylium, and pyridinium rings as auxochromes in solution was established on the basis of the nuclear Overhaus...

    M. Yu. Kornilov, A. V. Turov, V. V. Kurdyukov… in Theoretical and Experimental Chemistry (1989)

  6. No Access

    Article

    Influence of length of the polymethine chain on width of absorption bands of symmetric cyanine byes

    A. A. Ishchenko, N. A. Derevyanko… in Theoretical and Experimental Chemistry (1984)

  7. No Access

    Article

    Influence of nature of solvent on position, intensity, and shape of absorption bands of polymethine dyes

    N. A. Derevyanko, G. G. Dyadyusha… in Theoretical and Experimental Chemistry (1983)

  8. No Access

    Article

    Study of the solvatochromism of cyanine dyes by the method of moments

    G. G. Dyadyusha, A. A. Ishchenko… in Theoretical and Experimental Chemistry (1980)

  9. No Access

    Article

    Chemical structure and shape of the absorption bands of pyrylocyanine dyes

    A. A. Ishchenko, N. A. Derevyanko, M. A. Kudinova… in Theoretical and Experimental Chemistry (1978)

  10. No Access

    Article

    Direction of protonation in polymethine dyes

    A. I. Tolmachev, M. Yu. Kornilov, E. F. Karaban in Theoretical and Experimental Chemistry (1976)

  11. No Access

    Article

    The geometric structure of adducts of the lanthanide shift reagents with carbonyl compounds

    M. Yu. Kornilov, A. V. Turov, A. A. Ishchenko… in Theoretical and Experimental Chemistry (1976)

  12. No Access

    Article

    Investigation of the electron-donor capacity of 2,5-dimethyl-4-pyrone and its thio and seleno analogs in hydrogen bonding

    V. K. Pogorelyi, I. I. Kukhtenko, A. I. Tolmachev in Theoretical and Experimental Chemistry (1976)

  13. No Access

    Article

    PMR spectra and structure of 2,6-dimethyl- and 2,6-diphenyl-4-pyrones and their analogs

    A. I. Tolmachev, M. Yu. Kornilov, L. M. Shulezhko… in Theoretical and Experimental Chemistry (1976)

  14. No Access

    Article

    Effects of shielding and PMR spectra of pyridine, quinoline, and acridine derivatives

    M. Yu. Kornilov, L. M. Shulezhko, A. I. Tolmachev in Theoretical and Experimental Chemistry (1976)

  15. No Access

    Article

    A study of derivatives of the 4-pyrone series by the methods of dielectric-constant measurements and infrared spectroscopy

    Yu. P. Egorov, Yu. Ya. Borovikov, L. V. Papp… in Theoretical and Experimental Chemistry (1975)

  16. No Access

    Article

    Basicity and electronic structure of the pyrones

    A. I. Tolmachev, G. G. Dyadyusha, L. M. Shulezhko in Theoretical and Experimental Chemistry (1972)