Spectroscopic and calculated ionization constants of some pyrazines and pyridazines
Abstract
The pH dependence of the electronic spectra of some pyrazines and pyridazines was measured in the region between pH 14.3 and H0– 10.02. The experimental data were used to investigate the structure of some ionic forms and to calculate the ionization constants. Many constants were also calculated by the CNDO/2 method. The experimental constants show a correlation with the calculated ones.