Resonance Raman studies of benzene derivatives with strong conjugation

Horst Lueck; Bruce S. Hudson; Marek Z. Zgierski

doi:10.1117/12.220861

18 September 1995 Resonance Raman studies of benzene derivatives with strong conjugation

Horst Lueck, Bruce S. Hudson, Marek Z. Zgierski

Proceedings Volume 2548, Laser Techniques for State-Selected and State-to-State Chemistry III; (1995) https://doi.org/10.1117/12.220861
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Resonance Raman spectroscopy under conditions of resonance with the B_1u state of benzene exhibits strong binary overtone activity due to the vibronic activity of the e_2g vibrations, especially (nu) _g. Resonance with the analogous L_a state of benzene derivatives exhibits activity in both the fundamental and two-quantum overtone of this mode in a fashion that reflects the relative amounts of vibronic and substituent induced allowed character of the electronic transition. The Raman spectra can be used to test simple perturbative ideas concerning inductive effects originally proposed by Petruska. In this work we describe recent theoretical and experimental studies of such effects. The theory includes the Jahn-Teller and pseudo-Jahn-Teller effects in a non-perturbative fashion. The experiments are aimed at determining what happens when the interaction of the substituent with the benzene (pi) -electron system is strong so that perturbative arguments are no longer expected to apply.

Citation Download Citation

Horst Lueck, Bruce S. Hudson, and Marek Z. Zgierski "Resonance Raman studies of benzene derivatives with strong conjugation", Proc. SPIE 2548, Laser Techniques for State-Selected and State-to-State Chemistry III, (18 September 1995); https://doi.org/10.1117/12.220861

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