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Threshold Ionization of Cobaltocene: The Metallocene Molecule Revealing Zero Kinetic Energy States

Authors

  • Prof. Dr. Sergey Y. Ketkov,

    Corresponding author
    1. G.A. Razuvaev Institute of Organometallic Chemistry RAS, Tropinin St. 49, GSP-445, 603950 Nizhny Novgorod (Russia)
    • G.A. Razuvaev Institute of Organometallic Chemistry RAS, Tropinin St. 49, GSP-445, 603950 Nizhny Novgorod (Russia)
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  • Priv.-Doz. Dr. Heinrich L. Selzle

    1. Department Chemie, Technische Universität München, Lichtenbergstrasse 4, 85748 Garching (Germany)
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  • This work was supported in part by the Alexander von Humboldt Foundation, DFG, and RFBR (No 11-03-97051).

Abstract

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Playing it cool: The mass-analyzed threshold ionization (MATI) spectrum of jet-cooled cobaltocene shows a surprisingly rich vibronic structure which provides high-resolution adiabatic (Iad.) and vertical (Ivert.) ionization energies of the neutral molecule, as well as vibrational frequencies of the gas-phase cation. The spectrum is indicative of both Jahn–Teller (JT) and pseudo-Jahn–Teller (PJT) activity in the 19-electron [Cp2Co] sandwich complex.

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