A world beyond hydrogen bonds? - Chalcogen chalcogen interactions yielding tubular structures

被引:154
作者
Gleiter, R [1 ]
Werz, DB [1 ]
Rausch, BJ [1 ]
机构
[1] Heidelberg Univ, Inst Organ Chem, D-69120 Heidelberg, Germany
关键词
alkynes; chalcogens; host-guest systems; noncovalent interactions; self-assembly;
D O I
10.1002/chem.200204684
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
It is shown that tubular structures arise in the solid state through close chalcogen-chalcogen (X...X) contacts. As examples a variety of cyclic systems containing sulfur and selenium centers is presented. Common to all of them are close contacts between the chalcogen centers of neighboring stacks giving rise to a zigzag or ladder-type arrangement. In the case of cyclic systems of ring size 24-33 the resulting tubes are able to include hydrocarbons as guest molecules. For 2,7-ditelluraocta-3.5-diyne (17) the close contacts between the tellurium centers of the acyclic G symmetric building blocks generate a helical arrangement in which n-hexane was included. The favored X...X contacts can be traced back to np(X)-sigma*(X-C) interactions.
引用
收藏
页码:2676 / +
页数:10
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