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


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 


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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

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