Croatica Chemica Acta, Vol. 68 No. 2, 1995.
Kratko priopćenje
Substituent Effects in Thiophenes
Igor Novak
; Department of Chemistry, National University of Singapore, Singapore 0511, Singapore
Sažetak
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.
Ključne riječi
Hrčak ID:
136761
URI
Datum izdavanja:
1.5.1995.
Posjeta: 899 *