THE IONIZATION-POTENTIALS OF ALKOXYMETHYLDIALKYLAMINES AND THE ANOMERIC EFFECT

The ionization potentials IP1(n(N)) and IP2(n(O)) of alkoxymethyldialkylamines ROCH2NEt2 and MeOCH2NR2 were determined by photoelectron (PE) spectroscopy, and the conduction of the electronic effects of the substituents was studied. The anomeric n(N)-sigma*(C-O) interaction was appraised by comparison of the ionization potentials. Interaction between the n(O) and sigma*(C-N) orbitals was not detected The energies of charge transfer, strengthening of the N-C bond, and weakening of the C-O bond, due to the n(N)-sigma*(C-O) interaction, were determined