Advertisement

Polarography of substituted and bridged bis(cyclopentadienyl)-titanium dichlorides in tetrahydrofuran

  • V. V. Strelets
  • G. L. Soloveichik
  • A. I. Sizov
  • B. M. Bulichev
  • A. Rusina
  • A. A. Vlchek
Physical Chemistry

Conclusions

  1. 1.

    Substituted and bridged bis (cyclopentadienyl) titanium dichlorides such as Cp2TiCl2, in THF solution at a dropping mercury electrode undergo stepwise irreversible two-electron reduction.

     
  2. 2.

    In the absence of steric effects the increase in electron density at the Ti atom whan the ring contains alkyl substituants causes first-step E1/2 to shift to the cathodic potential region, and second-step E1/2 to shift to the anodic region.

     
  3. 3.

    When the ring contains bulky alkyl substituents, or alkylidene bridges that connect the cyclopentadiene ligands, the main influence on E1/2 of the complexes is that of steric effects that facilitate the first reduction step. The rigid alkylidene bridges hinder the second reduction step.

     

Keywords

Dichloride Steric Effect Reduction Step Alkyl Substituants Polarography 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature cited

  1. 1.
    R. E. Dessy, R. B. King, and M. Waldrop, J. Am. Chem. Soc.,88, 5112 (1966).Google Scholar
  2. 2.
    E. Laviron, J. Besanson, and F. Hug, J. Organomet. Chem.,159, 279 (1978).Google Scholar
  3. 3.
    N. El Murr, A. Chaloyard, and J. Tirouflet, J. Chem. Soc. Chem. Communs., 446 (1980).Google Scholar
  4. 4.
    Y. Mugnier, C. Moise, and E. Laviron, J. Organomet. Chem.,204, 61 (1981).Google Scholar
  5. 5.
    A. N. Nesmeyanova and K. A. Kochetkova (ed.), Methods of Heteroorganic Chemistry. The Copper-Scandium-Titanium-Vanadium-Chromium-Manganese Subgroups. Lanthanides and Actinides [in Russian], Vol. 1, Nauka, Moscow (1974), p. 181.Google Scholar
  6. 6.
    J. E. Bercaw, R. H. Marvich, L. G. Bell, and H. H. Brintzinger, J. Am. Chem. Soc.,94, 1219 (1972).Google Scholar
  7. 7.
    J. A. Smith, J. von Seyerl, G. Huttner, and H. H. Brintzinger, J. Organomet. Chem.,173, 175 (1979).Google Scholar
  8. 8.
    T. Leigh, J. Chem. Soc., 3294 (1964).Google Scholar
  9. 9.
    S. Herzog and J. Dehmert, Z. Chem., 1 (1964).Google Scholar
  10. 10.
    S. P. Gubin, Izv. Akad. Nauk SSSR, Ser. Khim., 1551 (1966).Google Scholar
  11. 11.
    I. A. Suskina, B. G. Gribov, R. A. Idrisova, L. I. Denisovich, and S. P. Gubin, Izv. Akad. Nauk SSSR, Ser. Khim., 425 (1971).Google Scholar
  12. 12.
    H. A. Skinner, Adv. Organomet. Chem.,2, 49 (1964).Google Scholar
  13. 13.
    J. L. Peterson and L. F. Dahl, J. Am. Chem. Soc.,97, 6422 (1975).Google Scholar
  14. 14.
    B. R. Davis and I. Bernal, J. Organomet. Chem.,30, 75 (1971).Google Scholar
  15. 15.
    T. C. McKenzie, R. D. Sanner, and J. E. Bercaw, J. Organomet. Chem.,102, 457 (1975).Google Scholar
  16. 16.
    R. D. Sanner, D. M. Duggan, T. C. McKenzie, R. E. Marsh, and J. E. Bercaw, J. Am. Chem. Soc.,98, 8358 (1976).Google Scholar

Copyright information

© Plenum Publishing Corporation 1984

Authors and Affiliations

  • V. V. Strelets
    • 1
    • 2
    • 3
  • G. L. Soloveichik
    • 1
    • 2
    • 3
  • A. I. Sizov
    • 1
    • 2
    • 3
  • B. M. Bulichev
    • 1
    • 2
    • 3
  • A. Rusina
    • 1
    • 2
    • 3
  • A. A. Vlchek
    • 1
    • 2
    • 3
  1. 1.Institute of Chemical PhysicsAcademy of Sciences of the USSR, Chernogolovka BranchUSSR
  2. 2.Institute of New Chemical ProblemsAcademy of Sciences of the USSRChernogolovka
  3. 3.Ya. Geirovskii Institute of Physical Chemistry and ElectrochemistryAcademy of Sciences of the Czechoslovak SSRPrague

Personalised recommendations