Substituent effects on gas-phase photodissociation dynamics: resonance Raman spectra of ethyl iodide, isopropyl iodide, and tert-butyl iodide

1991 ◽  
Vol 95 (23) ◽  
pp. 9085-9091 ◽  
Author(s):  
David L. Phillips ◽  
Barbara A. Lawrence ◽  
James J. Valentini
Keyword(s):  
Gas Phase ◽  
Raman Spectra ◽  
Resonance Raman ◽  
Substituent Effects ◽  
Ethyl Iodide ◽  
Tert Butyl ◽  
Resonance Raman Spectra

The Raman and resonance Raman spectra of some substituted dialkyl dithioesters and their rotational isomers

1982 ◽  
Vol 60 (2) ◽  
pp. 190-198 ◽  
Author(s):  
Y. Ozaki ◽  
A. C. Storer ◽  
P. R. Carey
Keyword(s):  
Liquid Phase ◽  
Raman Spectra ◽  
Solid Phase ◽  
Resonance Raman ◽  
Spectral Features ◽  
Tert Butyl ◽  
Rotational Isomers ◽  
Butyl Group ◽  
Tert Butyl Group ◽  
Resonance Raman Spectra

The Raman spectra of ethyl dithioacetate, methyl dithiopropionate, and ethyl thionoacetate are presented for the liquid phase at 25 °C and for the solid phase at approximately −130 °C. Certain spectral features disappear upon going from the liquid to the solid phase allowing the assignment of these bands to rotational isomers which are present in the liquid state only. The consequences of placing a tert-butyl group proximal to the CSS moiety in dithioesters are explored by considering the absorption, Raman, and resonance Raman spectra of ethyl dithiotrimethylacetate and tert-butyl dithioacetate. The resonance Raman spectra of the ionized and unionized forms of dithioacetic acid are also presented. The vibrational spectra of ethyl thiolacetate, and ethyl and methyl thionoacetate are compared to the spectra of the corresponding dithioesters.

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