Synthesis and Structures of Zigzag Shaped [12]Cyclo‑p‑phenylene Composed of Dinaphthofuran Units and Biphenyl Units

A [12]­Cyclo-p-phenylene 9 composed
of dinaphthofuran units and biphenyl units was synthesized through
reductive elimination of the corresponding trinuclear complex by applying
Yamago’s method. The X-ray crystallographic analyses of 9 revealed that it adopts a zigzag conformation in the solid
state. The UV–vis and fluorescence measurements of compound 9 indicated that it also preferentially took a zigzag conformation
in the solution state.

一种由二萘呋喃单元和联苯单元组成的 [12]Cyclo-p-phenylene 9，通过应用山口法对相应的三核复合物进行还原消除反应而合成。X射线晶体学分析显示，化合物9在固态下呈现出之字形构象。紫外-可见光和荧光光谱测量结果表明，该化合物在溶液状态下也优先采用之字形构象。