Russian Chemical Bulletin

, Volume 56, Issue 1, pp 174–177 | Cite as

Use of 1,4-bis(2,2,6,6-tetramethyl-1-oxyl-4-piperidyl)butane as a probe for studying acid sites

Brief Communications


ESR spectroscopy was applied to study paramagnetic complexes of the nitroxyl biradical of 1,4-bis(2,2,6,6-tetramethyl-1-oxyl-4-piperidyl)butane formed with AlCl3 in a toluene solution and resulted from the interaction with the acid sites on the SiO2 and γ-Al2O3 surface. This biradical in solution forms a complex with two AlCl3 molecules, and a complex with two hydroxyl groups is formed on the SiO2 surface. When the biradical is adsorbed on the γ-Al2O3 surface, complex formation is complicated because of steric hindrance preventing bidentate coordination.

Key words

1,4-bis(2,2,6,6-tetramethyl-1-oxyl-4-piperidyl)butane paramagnetic complexes aluminum chloride silica alumina electron paramagnetic resonance 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    E. V. Lunina, Appl. Spectrosc., 1996, 50, 1413.CrossRefADSGoogle Scholar
  2. 2.
    A. M. Tokmachev, N. D. Chuvylkin, A. V. Fionov, and E. V. Lunina, J. Mol. Catal. A: Chem., 2001, 172, 253.CrossRefGoogle Scholar
  3. 3.
    M. V. Sudnik, M. F. Romantsev, A. B. Shapiro, and E. G. Rozantsev, Izv. Akad. Nauk SSSR, Ser. Khim., 1977, 45 [Bull. Acad. Sci. USSR, Div. Chem. Sci., 1977, 26 (Engl. Transl.)].Google Scholar
  4. 4.
    L. M. Raikhman, E. P. Buzhinskii, and Yu. Sh. Moshkovskii, Dokl. Akad. Nauk SSSR, 1973, 212, 246 [Dokl. Chem., 1973 (Engl. Transl.)].PubMedGoogle Scholar
  5. 5.
    E. G. Rozantsev, Svobodnye iminoksil’nye radikaly [Free Iminoxyl Radicals], Khimiya, Moscow, 1970, 216 pp. (in Russian).Google Scholar
  6. 6.
    A. B. Shapiro, M. G. Goldfeld, and E. G. Rozantzev, Tetrahedron Lett., 1973, 14, 2183.CrossRefGoogle Scholar
  7. 7.
    WinEPR SimFonia, v. 1.25 © 1994–1996, Bruker Analytische Messtechnik GmbH;
  8. 8.
    A. L. Buchachenko and A. M. Vasserman, Stabil’nye radikaly [Stable Radicals], Khimiya, Moscow, 1973, 408 pp. (in Russian).Google Scholar
  9. 9.
    V. N. Parmon, A. I. Kokorin, and G. M. Zhidomirov, Stabil’nye Biradikaly [Stable Biradicals], Nauka, Moscow, 1980, 240 pp. (in Russian).Google Scholar
  10. 10.
    B. M. Hoffman and T. B. Eames, J. Am. Chem. Soc., 1969, 91, 5168.CrossRefGoogle Scholar
  11. 11.
    Spravochnik khimika [The Chemist’s Handbook], Ed. B. P. Nikol’skii, Goskhimizdat, Leningrad-Moscow, 1963, vol. 1, p. 966 (in Russian).Google Scholar

Copyright information

© Springer Science+Business Media, Inc. 2007

Authors and Affiliations

  1. 1.Department of ChemistryM. V. Lomonosov Moscow State UniversityMoscowRussian Federation

Personalised recommendations