Russian Chemical Bulletin

, Volume 43, Issue 4, pp 583–587 | Cite as

Nature of low-lying electron excited states of (η5-cyclopentadienyl) (η7-cycloheptatrienyl)niobium

  • S. Yu. Ketkov
Physical Chemistry


Electron absorption spectra of (η5-cyclopentadienyl)(η7-cycloheptatrienyl)niobium in solution and in the vapor phase have been measured for the first time. Possible variants of the band assignment for the spectrum of the complex in a solution have been considered. In the spectrum of the vaporous compound the bands at 29570, 31730, and 34630 cm−1 correspond to the electron transitions from the 4d(σ+) orbital to the lowest Rydberg p- and d-levels. The values of Rydberg transition terms and symmetry of p-states have been determined.

Key words

5-cyclopentadienyl)(η7-cycloheptatrienyl)niobium electron absorption spectrum electron excited states Rydberg levels electron transitions 


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Copyright information

© Plenum Publishing Corporation 1995

Authors and Affiliations

  • S. Yu. Ketkov
    • 1
  1. 1.Institute of Organometallic ChemistryRussian Academy of SciencesNizhny NovgorodRussian Federation

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