Synthesis and Characterization of Novel 1,4‐Di(o‐thioaryl)benzene Buta‐1,3‐diynes

Abstract

AbstractThe dimers of terminal alkynes were synthesized through a room temperature reaction which used (diacetoxyiodo)benzene as oxidizing agent and acetonitrile as solvent. The structures were characterized by 1H NMR, 13C NMR. The electrochemical and spectrochemical properties of the compounds were also characterized by cyclic voltammetry and UV spectroscopy. Meanwhile, the single crystal X‐ray analysis of the model compound was discussed.Introduction of the thioaryl group in ortho position lead to the red shift of the UV absorption peaks, and the introduction of a large steric hindrance group reduced the influences of the intermolecular π‐π interactions on their electronic properties. Moreover the sulfur atom can form the stable S−Au bond with gold. These data indicated that compounds 3 b‐3 dare expected to be applied in the field of molecular wires.