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The PE Spectra of the Seleno Analogues of Thieno[3,4‐ b ]thiophene
Author(s) -
Gleiter Rolf,
EckertMaksic Mirjana,
Konar Andreas
Publication year - 1987
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19871201124
Subject(s) - chemistry , thiophene , ionization , ionization energy , spectral line , computational chemistry , perturbation theory (quantum mechanics) , stereochemistry , crystallography , organic chemistry , ion , physics , quantum mechanics , astronomy
The He(I α ) photoelectron (PE) spectra of the three isomeric seleno analogues 7, 8 and 11 of thieno [3,4‐ b ]thiophene have been recorded. The first four bands can be assigned to ionizations from π‐MO′s by comparing their energies with the calculated orbital energies derived from HMO and PPP calculations. The small changes of ionization energies of the three compounds can be rationalized in terms of first‐order perturbation theory.