1,2,4,5‐Tetrakis(dimethylamino)benzene, a New Electron Donor with Unusual Properties

Abstract

A product consisting of two vinylogous amidinium ions is formed when the title compounds gives up two electrons to iodide. The resulting salt forms diamagnetic, blackish-violet crystals. The two mesomeric π-electron systems are almost planar; the sixmembered ring in 1 has a twist-conformation.