Electronic structure and spectra of organic molecules

Józef Stanislaw (“Staszek”) Kwiatkowski, (1936 to 2000)

“…His studies dealt both with neutrals and ions (anionic and cationic forms of molecules) and at that time he proposed a model which—as was shown—is well suited to the interpretation of electronic spectra of protonated derivatives of pyridines and pyrimidines 6. At the end of the 1960s, Staszek extended his earlier modification of the PPP method to such a form that made it possible to perform a thorough analysis of a huge number of data on the electronic spectra of the anions of hydroxy and mercapto derivatives of benzenes, naphthalenes, pyridines, pyrimidines, and purines 7. Moreover, using that same method, he was able to interpret several aspects of the phenomenon of tautomerism in the lactan and thione forms of organic compounds 7, 8.…”

“…At the end of the 1960s, Staszek extended his earlier modification of the PPP method to such a form that made it possible to perform a thorough analysis of a huge number of data on the electronic spectra of the anions of hydroxy and mercapto derivatives of benzenes, naphthalenes, pyridines, pyrimidines, and purines 7. Moreover, using that same method, he was able to interpret several aspects of the phenomenon of tautomerism in the lactan and thione forms of organic compounds 7, 8.…”