Advertisement

Russian Chemical Bulletin

, Volume 46, Issue 12, pp 2032–2035 | Cite as

Interaction of the iridium(III) trihydridophosphine complex with fullerene C60 under thermal and photochemical excitation

  • N. F. Goldshleger
  • N. N. Denisov
  • V. A. Nadtochenko
  • M. G. Kaplunov
  • A. V. Kulikov
Physical Chemistry

Abstract

The interaction of the PPh3-stabilized iridium trihydrido complex H3Ir(PPh3)3 with fullerene C60 under thermal and photochemical excitation was studied under anaerobic conditions. Heating (100 °C) or photolysis by the visible light of the H3Ir(PPh3)3-C60 650 nm, which are characteristic of the ·2-coordinated C60 in several fullerene-containing metal complexes. The kinetic behavior of the H3Ir(PPh3)3)-C60 system in benzonitrile was investigated using a Nd3+-YAG laser (λ=532 nm). The quenching rate constant determined from the dependence of the effective first-order quenching constant of C60(T) on the concentration of H3Ir(PPh3)3 is equal to 1.1·109 L mol−1 s−1. The quenching of C60(T) by the iridium hydridophosphine complex follows the reductive mechanism to form a C60 monoanion. The ESR signal with g=2.000 and ΔH=0.17 mT (at room temperature) and characteristic absorption bands in the near-IR region at 940, 1004, and 1076 nm support the formation of the C60 monoanion during the interaction of the triplet-excited C60 with H3Ir(PPh3)3.

Key words

fullerene C60 laser photolysis quenching rate constant ESR spectroscopy near-IR spectroscopy iridium trihydrido complexes 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    V. I. Sokolov and I. V. Stankevich,Usp. Khim., 1993,62, 455 [Russ. Chem. Rev., 1993,62 (Engl. Transl.)].Google Scholar
  2. 2.
    A. Hirsch, Q. Li, and F. Wudl,Angew. Chem. Int. Ed., 1991,30, 1309.CrossRefGoogle Scholar
  3. 3.
    N. F. Gol'dshleger, A. S. Lobach, A. S. Astakhova, M. G. Kaplunov, A. V. Kulikov, A. P. Moravskii, O. S. Roshchupkina, and Yu. M. Shul'ga,Izv. Akad. Nauk, Ser. Khim., 1994, 1143 [Russ. Chem. Bull., 1994,43, 1081 (Engl. Transl.)].Google Scholar
  4. 4.
    V. Brezová, A. Staśko, P. Rapta, G. Domschke, A. Bartl, and L. Dunsch,J. Phys. Chem., 1995,99, 16234.CrossRefGoogle Scholar
  5. 5.
    A. V. Usatov, K. N. Kudin, E. V. Vorontsov, L. E. Vinogradova, and Yu. N. Novikov,J. Organomet. Chem., 1996,522, 147.CrossRefGoogle Scholar
  6. 6.
    A. L. Balch, J. W. Lee, B. C. Noll, and M. M. Olmstead,Inorg. Chem., 1993,32, 3577.CrossRefGoogle Scholar
  7. 7.
    R. S. Koefod, M. F. Hudgens, and J. R. Shapley,J. Am. Chem. Soc., 1991,113, 8957.CrossRefGoogle Scholar
  8. 8.
    N. N. Denisov, A. S. Lobach, and V. A. Nadtochenko,Izv. Akad. Nauk, Ser. Khim., 1996 1163 [Russ. Chem. Bull., 1996,45, 1103 (Engl. Transl.)].Google Scholar
  9. 9.
    J. Stinchcombe, A. Pénicaud, P. Bhyrappa, P. D. W. Boyd, and C. A. Rud,J. Am. Chem. Soc., 1993,115, 5212.CrossRefGoogle Scholar
  10. 10.
    M. M. Khaled, R. T. Carlin, P. C. Trulone, G. R. Eaton, and S. S. Eaton,J. Am. Chem. Soc., 1994,116, 3465.CrossRefGoogle Scholar
  11. 11.
    A. S. Lobach, N. F. Goldshleger, M. G. Kaplunov, and A. V. Kulikov,Chem. Phys. Lett., 1995,243, 22.CrossRefGoogle Scholar
  12. 12.
    D. E. Westerberg, L. F. Rhodes, J. Edwin, W. E. Geiger, and K. G. Caulton,Inorg. Chem., 1991,30, 1107.CrossRefGoogle Scholar
  13. 13.
    E. G. Lundquist, K. Folting, W. E. Streib, J. C. Huffman, O. Eisenstein, and K. G. Caulton,J. Am. Chem. Soc., 1990,112, 855.CrossRefGoogle Scholar
  14. 14.
    A. Weissberger, E. Proskauer, J. Riddick, and E. Toops,Organic Solvents, Wiley, New York, 1955.Google Scholar
  15. 15.
    J. J. Levison and S. D. Robinson,J. Chem. Soc., A, 1970, 2947.Google Scholar
  16. 16.
    V. A. Nadtochenko, N. N. Denisov, I. V. Rubtsov, A. S. Lobach, and A. P. Moravskii,Izv. Akad. Nauk, Ser. Khim., 1993, 1228 [Russ. Chem. Bull., 1993,42, 1171 (Engl. Transl.)].Google Scholar

Copyright information

© Plenum Publishing Corporation 1998

Authors and Affiliations

  • N. F. Goldshleger
    • 1
  • N. N. Denisov
    • 1
  • V. A. Nadtochenko
    • 1
  • M. G. Kaplunov
    • 1
  • A. V. Kulikov
    • 1
  1. 1.Institute of Chemical Physics in ChernogolovkaRussian Academy of SciencesChernogolovkaRussian Federation

Personalised recommendations