C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 517/06 (2006.01) H01B 1/12 (2006.01)
Patent
CA 2089631
FM/6- 18974/A Process for the preparation of tetraselenotetracene halides and electrically conductive Polymer compositions Abstract of the Disclosure A process for the preparation of tetraselenotetracene chlorides or bromides of formula I, Image (I), wherein R1, R2, R3 and R4 are each independently of one another H or F; R1 is CH3 and R2, R3 and R4 are H; R1, R2, R3 and R4 are each CH3; or R1 and R2 are CH3 or Cl, and R3 and R4 are H, and X is Cl or Br, which process comprises reacting a tetraselenotetracene of formula II Image (II) in a polar aprotic solvent, with stoichiometric amounts of an ammonium hydrochloride or hydrobromide, in the presence of oxygen at elevated temperature. An organic binder may be dissolved in the reaction solution and a substrate coated with this solution. After evaporation of the solvent, electrically conductive coatings are obtained that consist of a network of crystal needles of compounds of formula I in the binder matrix.
Mayer Carl W.
Minder Ernst
Ag Ciba-Geigy
Fetherstonhaugh & Co.
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