Ma Ming-Liang, Li Xiao-Yan, Wen Ke
Division of Supramolecular Chemistry and Medicinal Chemistry, Key Laboratory of Brain Functional Genomics, MOE & STCSM, Shanghai Institute of Brain Functional Genomics, East China Normal University, Shanghai 200062, China.
J Am Chem Soc. 2009 Jun 24;131(24):8338-9. doi: 10.1021/ja900291w.
Coordination-driven self-assembly of ortho-linked oxacalix[2]benzene[2]pyrazine (1) as well as oxacalix[2]arene[2]pyrazine (2) with a silver cation resulted in the formation of a discrete molecular cage (3) and a one-dimensional chain of coordination cages (4), respectively. Single crystal X-ray diffraction analysis confirmed the structures of 3 and 4. The silver ions in 3 adopted tetrahedral coordination geometries while the silver ions in 4 adopted square-planar coordination geometries. The void of the metal-containing cage 3 was occupied by a methyl group of an acetonitrile bonded to a neighboring cage in the solid state, and one benzene ring was found to reside in the void of each cage of complex 4.
邻位连接的氧杂杯[2]苯[2]吡嗪（1）以及氧杂杯[2]芳烃[2]吡嗪（2）与银阳离子通过配位驱动的自组装分别形成了离散的分子笼（3）和一维配位笼链（4）。单晶X射线衍射分析证实了3和4的结构。3中的银离子采用四面体配位几何构型，而4中的银离子采用平面正方形配位几何构型。在固态下，含金属笼3的空隙被与相邻笼键合的乙腈的甲基占据，并且发现一个苯环位于配合物4每个笼的空隙中。
