科研之友
微信
新浪微博
Facebook
分享链接
摘要
Using the achiral N,N'-bis(2-pyridylmethyl)-1,6-hexanediamine ligand bearing two end pyridyl groups as the source of conformational chirality, a novel type of TMeQ[6]-based helical polyrotaxane was prepared and characterized by X-ray crystallography and H-1 NMR spectroscopy. The chirality of the polyrotaxane was generated from twisting of the hexylidene of the N,N'-bis(2-pyridylmethyl)-1,6-hexanediamine "string" when bound within the hydrophoblic cavity of TMeQ[6]. Two opposite chiral helical polyrotaxanes crystallize as a racemic compound,
