Arylpyrrolyldiketone boron complexes as anion‐responsive π‐electronic molecules were synthesized by Claisen condensations of acetylpyrrole and corresponding aryl esters. The synthesized π‐electronic molecules exhibited anion‐binding behavior with various binding modes including pyrrole‐inverted and non‐inverted [1+1]‐type anion complexes as well as [2+1]‐type complexes owing to the presence of only a single pyrrole ring. Furthermore, solid‐state ion‐pairing assemblies, comprising receptor–anion complexes and countercations, were constructed based on fairly planar [2+1]‐type complexes.

中文翻译：

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基于动态构象变化的各种阴离子结合模式的芳吡咯基二酮硼配合物

通过对乙酰基吡咯和相应的芳基酯进行克莱森缩合反应，合成了作为阴离子响应性π电子分子的芳基吡咯基二酮硼配合物。合成的π电子分子在各种结合模式下均表现出阴离子结合行为，包括吡咯转化的和非反转的[1 + 1]型阴离子配合物以及[2 + 1]型阴离子配合物，因为仅存在a单吡咯环。此外，基于相当平面的[2 + 1]型络合物构建了包含受体-阴离子络合物和抗衡阳离子的固态离子对组件。