ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 21, Number 6
JKCSEZ 21(6)
December 20, 1977 

The electronic structures of 4-pyridone and lutidone are studied by the SCF MO-CI PPP method and by the configuration analysis method. The spectral data are consistent with the values calculated by the method. The polarization of S1 (π,π*) state is along the long molecular axis in both compounds. The lowest (π,π*)1 state shows significant charge transfer (16∼18%) from π bonding orbital of C=O moiety to π* antibonding orbital of divinyl amine moiety. The lowest triplet state shows much larger charge transfer (24∼29 %) but in opposite direction compared to that of S1(π,π*) state.