FjyrazineTCNQ (la) prepared from 5, 8-diiodoquinoxaline (4a) is, like TCNQ itself, a strong electron acceptor and givee a stable anion radical salt as well as highly conductive chargetransfer crystals with donors. Substituted derivatives lb-i were similarly prepared from 3, 6-diiodo-l, 2-phenylenediamine (5) as a common intermediate, and bulky substituents such as the phenyl or pyridyl groups have very little effect on either the redox properties or ...
