| abstract |
Compounds of formula I. wherein X₁, X₂ and X₃ are independently S or Se, R₁ and R₂ independently of one another H, linear or branched C₁-C₁₈ alkyl or C₁-C₁₈ alkyl-X₄- or R₁ and R₂ together mean in which X₄ is S or Se, z = 0 and n are an integer from 2 to 6 or z = 1 and n are an integer from 1 to 4, R₄ and R₅ independently represent H or C₁-C₆ alkyl, and R₃ is linear or branched C₁-C₁₂ alkyl or phenyl.n n n The compounds can be converted into unsymmetrically substituted chalcogen fullvalenes, from which electrically conductive charge transfer complex salts can be prepared. |