Sun W Y, Fan J, Okamura T, Xie J, Yu K B, Ueyama N
Coordination Chemistry Institute, Nanjing University, China.
Chemistry. 2001 Jun 18;7(12):2557-62. doi: 10.1002/1521-3765(20010618)7:12<2557::aid-chem25570>3.0.co;2-u.
Three five-component architectures, compounds 3, 4, and 5 were obtained by self-assembly of tripodal 1,3,5-tris(imidazol-1-ylmethyl )-2,4,6-trimethylbenzene (6) and 1,3,5-tris(benzimidazol-2-ylmethyl)benzene (7) ligands with silver(I) salts. The structures of these novel complexes have been determined by X-ray crystallography. The results of structural analysis indicate that these frameworks have same M3L2 components, but different structures. Compounds 3 and 4 are both M3L2 type cage-like complexes, while the 5 is an open trinuclear complex. The complex 3 is a cylindrical cage with simultaneous inclusion of a perchlorate anion inside of the cage as a guest molecule. Such guests can be exchanged for other anions through the open edge of the cage as evidenced by crystal structure of 4. The results demonstrate that the molecular M3L2 type cage can act as a host for anions and provide a nice example of supramolecular architectures with interesting properties and possible applications.
通过三脚架状的1,3,5-三（咪唑-1-基甲基）-2,4,6-三甲基苯（6）和1,3,5-三（苯并咪唑-2-基甲基）苯（7）配体与银（I）盐自组装，得到了三种五组分结构，即化合物3、4和5。这些新型配合物的结构已通过X射线晶体学确定。结构分析结果表明，这些骨架具有相同的M3L2组分，但结构不同。化合物3和4均为M3L2型笼状配合物，而化合物5是一种开放的三核配合物。配合物3是一个圆柱形笼子，笼内同时包含一个高氯酸根阴离子作为客体分子。如化合物4的晶体结构所示，此类客体可以通过笼子的开口边缘与其他阴离子进行交换。结果表明，分子M3L2型笼子可以作为阴离子的主体，为具有有趣性质和可能应用的超分子结构提供了一个很好的例子。
