Molecular Crystals and Liquid Crystals, Vol.379, 77-82, 2002
Synthesis of new 2,7-diiodo-1,6-dithiapyrene and crystal structures of its charge-transfer salts
We have designed and synthesized 2,7-diiodo-1,6-dithiapyrene (DIDTPY) as a first halogenated DTPY derivative. The X-ray structural analyses showed that the charge-transfer salts, (DIDTPY)(PF6) and (DIDTPY)(1.5)(AuBr2), possessed dimeric pairs of the cationic donor molecules and columnar stack of donor molecules, respectively. The conductivity of the compressed pellet for (DIDTPY)(1.5)(AuBr2) exhibited a semiconducting behavior (sigma(rt) = 2x10(-2) Scm(-1)).
Keywords:1,6-dithiapyrene;halogen-halogen interaction;charge-transfer salt;semiconductor;dimensionality