Croatica Chemica Acta, Vol. 68 No. 2, 1995.
Short communication, Note
Substituent Effects in Thiophenes
Igor Novak
; Department of Chemistry, National University of Singapore, Singapore 0511, Singapore
Abstract
He I and He II photoelectron spectra (UPS) of 2-acetyl and 2-cyano thiophene have been measured. The electronic strucutre of the title compounds and, in particular, the effect of substituents on the thiophene % orbitals is discussed on the basis of band widths, He I/He II intensities and semi-empirical MO calculations. Definite assignments are given for the two molecules, thus completing the previous work. The available results on 2- and 3-monosubstituted thiophenes have been compiled and rationalized.
Keywords
Hrčak ID:
136761
URI
Publication date:
1.5.1995.
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