Heterocycles · 1993 · 13 citations · 1 references
Natural SciencesChemistryMedicinal ChemistryCrystal StructureInorganic ChemistryOrganic ChemistryChemical BondingCoordination ChemistryCrystal ChemistryHeterocyclic ChemistryOrganic Electronic MaterialsOrganic SemiconductorsElectron DonorsIntramolecular Electron TransferOne-electron Transfer ReactionsOxidationThiadiazole ChemistryThiazole Chemistry
The title electron donors (1 and 2) were prepared from 4-bromo-7-dialkylaminobenzo[c][1,2,5]thiadiazole (3). They are electrochemically amphoteric, and the absorption maxima in the 500-550 nm region were assigned to the intramolecular charge-transfer (CT) bands. The X-ray analyses of 1b and 1b +. PF 6 revealed that the twisted geometry of 1b became planar upon one-electron oxidation, and a coplanar «ribbon»-like network was formed by S...N interactions in the crystal of 1b +. PF 6
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