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  • 1
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 12 (1982), S. 30-35 
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The resonance Raman spectra of 9,9′-bifluorenylidene have been measured in the 450-510 nm region either in solution or in the solid state by using six lines of the Ar+ laser. The analysis of the excitation profiles allowed inferences to be drawn concerning the vibronic structure of the lowest electronic excited state. The different behaviour shown by the profiles relative to the solid and the solution has been interpreted as due to different Franck-Condon overlap integrals between the ground and the excited electronic states. A vibrational assignment of the g modes is proposed on the basis of a polarized Raman spectrum in solution taken with the 632.8 nm line of a He-Ne laser. Electronic spectra of NaCl pellets and of oriented polycrystalline samples were also measured.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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