Infrared Study of Intercomponent Interactions in a Switchable Hydrogen-Bonded Rotaxane
作者:Dhiredj C. Jagesar、František Hartl、Wybren Jan Buma、Albert M. Brouwer
DOI:10.1002/chem.200701531
日期:2008.2.18
states. In addition, the solvent effect on the vibrational frequencies was analyzed; a correlation with the solvent acceptor number (AN) was observed. The conformational switching upon reduction could be detected by monitoring the hydrogen-bond-induced shifts of the nu(CO) frequencies of the C double bond O groups of the succinamide and the reduced naphthalimide stations. The macrocycle was found to shield
轮烷1中的大环优选以中性形式氢键合至琥珀酰胺站,但是可以通过后者的单电子还原将其转移至萘二甲酰亚胺站。通过红外光谱研究了两种状态下不同溶剂中大环酰胺NH基团与线中结合位点的C双键O基团之间的氢键关系。另外,分析了溶剂对振动频率的影响。观察到与溶剂受体数(AN)的相关性。还原时的构象转换可以通过监测氢键引起的琥珀酰胺和还原的萘二甲酰亚胺的C双键O基团的nu(CO)频率的氢键引起的位移来检测。发现大环化合物可保护包封的工作站免受溶剂的影响: