Straightforward access to aryl-substituted/fused 1,3-dithiole-2-chalcogenones by Cu-catalyzed C–S coupling between aryl iodides and zinc–thiolate complex (TBA)2[Zn(DMIT)2]
The Cu-catalyzed CâS coupling between iodoaryl and a zincâthiolate complex was achieved. This protocol provides a facile and efficient synthetic approach for aryl-substituted/fused 1,3-dithiole-2-chalcogenones, which can be converted to TTFs.
Four new nickel bis(dithiolene) complexes with different substituent groups on their benzene rings were synthesized and characterized. X-ray structure analysis reveals that the anions of these Ni-complexes exhibit chair-like configurations. Magnetic measurements confirm that compounds 1–4 show antiferromagnetic interactions. The absorption spectra show strong and broad absorptions in the near-infrared
to form cocrystals. In the cocrystals, the fullerene molecules are encapsulated by the curved surfaces of TTN molecules through multiple intermolecular atomic contacts. While the interaction modes between TTNs and fullerene molecules are very similar, the packing patterns of the cocrystals can be finely tuned by varying the solvents. Moreover, the fullerene molecules form tight stacks as column arrays
1,4,5,8-四硫代萘(TTN)是四硫富瓦烯(TTF)的结构异构体。在本文中,标题的芳基稠合的TTN(TTN1-TTN9)是通过二倍的Cu催化的C-S偶联反应从硫醇锌复合物(TBA)2 [Zn(DMIT)2 ]合成的。这些TTN可以通过与FeCl 3反应转化为相应的芳基稠合的TTF异构体。通过吸收光谱,电化学和理论计算研究了这些TTN的电子性质,这表明这些TTN与其TTF异构体相比显示出较弱的给电子能力。晶体学分析表明这些TTN具有椅子样构型,即具有两个与富勒烯分子互补的曲面。因此,这些TTN显示出对C 60 / C 70的强亲和力以形成共晶体。在共晶体中,富勒烯分子通过多个分子间原子接触被TTN分子的曲面包裹。尽管TTN与富勒烯分子之间的相互作用模式非常相似,但可以通过改变溶剂来微调共晶的堆积模式。此外,富勒烯分子形成紧密的堆叠,如柱状阵列或二维薄片。