E.S.R. studies of ion association. Part 3.—Mechanism of metal hyperfine splitting in pyrazine-alkali metal ion-pairs
Abstract
The relative importance of charge transfer states arising by excitation of electrons from π and from nitrogen non-bonding orbitals to the lowest vacant s-orbital of the alkali metal as mechanisms producing metal hyperfine splitting in the electron spin resonance spectra of pyrazine-alkali metal ion pairs is discussed using molecular orbital theory.