Tetrathiapentalene derivatives having long alkyl chains

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Description

New TTP derivatives with long alkyl chains, C n TET-TTP (1) and TTC n -TTP (2) (n= 2-4), have been synthesized. A charge transfer complex (C 2 TET-TTP) 2 ClO 4 is metallic down to helium temperature. C 3 TET-TTP and C 4 TET-TTP form 1:1 complexes with I 3 , and are semiconductive from room temperature. Symmetrical donors TTC 2 -TTP and TTC 4 -TTP give semiconductive radical-cation salts. A neutral crystal of TTC 4 -TTP consists of uniform stacking of chair-like molecules.

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