29 Photodetachment Photoelectron...

Accession Number
    XQ566-0004

Document Delivery
    The Genuine Article Number: XQ566

Authors
    Schiedt J. Weinkauf R .

Title
    PHOTODETACHMENT PHOTOELECTRON SPECTROSCOPY OF PERYLENE AND
    CS2 - TWO EXTREME CASES

Source
    Chemical Physics Letters. 274(1-3):18-22, 1997 Aug 1.

ISSN
    0009-2614

KeyWords Plus
    Jet-cooled perylene. Molecules.

Abstract
    Photodetachment photoelectron spectroscopy has been applied to the
    investigation of mass selected and supersonic jet cooled perylene and CS2
    anions, used as model systems for large and small molecules, Far perylene,
    the adiabatic electron affinity is determined to be 973 +/- 5 meV. In contrast,
    despite a resolved bending mode progression in the neutral ground state,
    only an upper limit of 800 meV can be given for the adiabatic electron affinity
    of CS2. This is due to poor Franck-Condon overlap between the bent anionic
    and the linear neutral molecular structures. The vibrational intensity
    distributions in the spectra of CS2 and perylene can be taken as prototypes
    for small and large molecules: the different affects of the surplus electron in
    either a localized or delocalized pi* orbital on geometry can be generalized.
    The spectra are the first anion photodetachment photoelectron spectra of
    these molecules. (C) 1997 Elsevier Science B.V. [References: 25]

Language
    English

Publication Type
    Article

CC Categories
    Physical chemistry/chemical physics.

Subset
    Current Contents/Physical, Chemical & Earth Sciences

Institution
    Reprint available from:
    Weinkauf R.
    HEINRICH-HEINE-UNIVERSITAET DUESSELDORF
    INST PHYSICAL CHEMISTRY & ELECTROCHEMISTRY I
    40204 DUESSELDORF
    GERMANY