Synthesis, structure, and physicochemical properties of singlet biradical oligomers

几种P-杂环单重态双自由基可以在室温下在空气中处理，这对于探索新材料是理想的。含有两个和三个双自由基单元的寡聚物（双自由基）被成功地合成为稳定的晶体化合物，并显示出相当大的双自由基单元之间的通过空间的相互作用。这些结果表明，单重态双自由基是有希望开发新的材料，为分子电子学没有积累的π共轭平面结构。

Several P-heterocyclic singlet biradicals can be handled in the air at ambient temperature, which is desirable for exploration of novel materials. Oligo(biradicals) containing catenated two and three biradical units were successfully synthesized as stable crystalline compound, and showed considerable through-space interaction between the biradical units. These findings indicate that the singlet biradicals are promising to develop novel materials for molecular electronics without accumulation of π-conjugated planar structures.