Design Considerations for the Group 15 Elements: The Pnictogen•••π Interaction As a Complementary Component in Supramolecular Assembly Design
Design Considerations for the Group 15 Elements: The Pnictogen•••π Interaction As a Complementary Component in Supramolecular Assembly Design
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DOI：
10.1021/cg100444n
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发表时间：
2010-08-01
影响因子：
3.8
通讯作者：
Johnson, Darren W.
中科院分区：
文献类型：
--
作者：
Cangelosi, Virginia M.;Pitt, Melanie A.;Johnson, Darren W.
结合关于pNictogen中心点pi相互作用的新的结构报告，对详尽的结构调查进行了分析。在剑桥结构数据库中搜索位于其范德华半径与芳环之和内的pNictogen原子(As、Sb和Bi)的例子。对结果进行了分析，结果表明，由于原子上孤子对的弥散性质，对于较重的致癌物质，相互作用距离较短。距离与相互作用角度之间的弱相关性被发现，这意味着相互作用本质上是部分共价的，但主要是色散相互作用。这些芳烃中心点pi相互作用可以作为超分子组装的驱动力，并给出了两个新的含砷组装的晶体结构。对这些结构的联合分析和结构调查表明，我们的超分子设计策略可以微调，以利用pNictogen中心点pi相互作用。
An exhaustive structural survey was analyzed in combination with new structural reports on pnictogen center dot center dot center dot pi interactions. The Cambridge Structural Database was searched for examples of pnictogen atoms (As, Sb, and Bi) that lie within the sum of their van der Waals radii with an arene ring. The results were analyzed, and it was concluded that the interaction distance is shorter for the heavier pnictogens due to the increasingly diffuse nature of the lone pair of electrons on the atom. A weak correlation between the distance and the angle of the interaction was found, implying that the interaction is partially covalent in nature but is primarily a dispersion interaction. These arene center dot center dot center dot pi interactions can be used as driving forces for supramolecular assembly, and the crystal structures of two new arsenic-containing assemblies are presented. The combined analysis of these structures and the structural survey suggest that our supramolecular design strategy can be fine-tuned to take advantage of the pnictogen center dot center dot center dot pi interaction.