The title thiophene derivatives bearing two 9-, 1-, or 2-anthryl groups were synthesized by cyclization of the corresponding 1,3-diynes with sodium sulfide or by Suzuki–Miyaura coupling. X-ray analysis and DFT calculations revealed that the molecules adopt nonplanar conformations depending on the steric demand of the anthryl groups. The dihedral angles between the arene units are an important contributor to the photophysical properties in the electronic spectra as well as the electrochemical data.
通过环化对应的1,3-二炔基与硫化钠或Suzuki–Miyaura偶联反应,合成了带有两个9-、1-或2-蒽基的噻吩衍生物。X射线分析和密度泛函理论计算表明,分子根据蒽基的立体位阻采用非平面构象。芳香环之间的二面角是电子光谱和电化学数据中光物理性质的重要贡献因素。