Electron Transport in 4H-1,1-Dioxo-4-(dicyanomethylidene)thiopyrans. Investigation of X-ray Structures of Neutral Molecules, Electrochemical Reduction to the Anion Radicals, and Absorption Properties and EPR Spectra of the Anion Radicals

Article abstract of DOI:10.1021/jo00111a028

A series of 4H-1,1-dioxo-4-(dicyanomethylidene)thiopyrans 1-15, which are useful as electron-transport materials in xerography, were prepared by condensation of malononitrile with the corresponding 4H-1,1-dioxothiopyran-4-one.X-ray crystal structures of 1