摘要
以1H核磁共振技术和X射线单晶衍射分析方法考察了 3种瓜环与长链二胺 ( 1,7 庚二胺与 1,8 辛二胺 )相互作用的结构特征 .1HNMR分析表明瓜环 (Q[6]和Q[7] )与有机二胺 ( 1,7 庚二胺与 1,8 辛二胺 )有较强的相互作用 ,形成自组装类轮烷结构 ;Q[8]与 1,7 庚二胺与 1,8 辛二胺之间相互作用力相对较弱 ;晶体结构测定结果表明 ,六元瓜环与辛二胺自组装形成的类轮烷实体中 ,辛二胺是以直链状穿过六元瓜环的空腔 ,两配位氨基留在瓜环两端口之外 .
The structures of self-assembled pseudorotaxane of cucurbit [n] urils ( n = 6 similar to 8) with some alkyldiamines have been investigated by H-1 NMR technique and single crystal X-ray diffraction method. The results reveal that the interaction between cucurbit[6]uril or cucurbit[7]uril and 1,7-diaminoheptane or 1,8-diaminooctane is stronger than that between cucurbit[ 8] uril and 1,7-diaminoheptane or 1, 8-diaminooctane, and the pseudorotaxanes of cucurbit[n] urils with the alkyldiamines were observed. Particularly, in the pseudorotaxane of cucurbit [6] uril with 1, 8-diaminooctane, the amino groups of 1, 8-diaminooctane are left outside the ports of cucurbit [6] uril.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2004年第19期1927-1934,共8页
Acta Chimica Sinica
基金
国家自然科学基金(No.200261002)
贵州省重点基金(No.20023004)
贵州省国际合作(No.200211003)资助项目.
