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IR Spectrum and Structure of a Protonated Disilane: Probing the Si[BOND]H[BOND]Si Proton Bridge

Authors

  • Dipl.-Phys. Marco Savoca,

    1. Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin (Germany)
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  • Dr. Judith Langer,

    1. Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin (Germany)
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  • Prof. Dr. Otto Dopfer

    Corresponding author
    1. Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin (Germany)
    • Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin (Germany)
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  • This study was supported by the Deutsche Forschungsgemeinschaft (grant numbers DO 729/5 and FOR 1282).

Abstract

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Structure elucidation: The IR spectrum of the protonated disilane Si2H7+ has been derived by resonant IR photodissociation spectroscopy of weakly bound Si2H7+⋅Ne clusters (see picture). Analysis of the spectra provides the first characterization of this fundamental polysilane cation and direct evidence for the nonlinear Si[BOND]H[BOND]Si proton bridge with a three-center two-electron bond.

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