Encapsulation and dynamic behavior of two H2 molecules in an open-cage C70.
Encapsulation and dynamic behavior of two H2 molecules in an open-cage C70.
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DOI：
10.1021/ja801753m
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发表时间：
2008-04
影响因子：
15
通讯作者：
Y. Murata;Shuhei Maeda;M. Murata;K. Komatsu
中科院分区：
文献类型：
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作者：
Y. Murata;Shuhei Maeda;M. Murata;K. Komatsu
通过三步反应合成具有13元环开口(2)的开笼C70衍生物；C70与吡嗪衍生物的热反应，CC双键的氧化裂解，以及硫原子插入到开口。通过x射线分析确定了2的结构。在2中加入1个H2分子得到H2@2，产率为97%。此外，两个H2分子包封在2中，产率为3%。通过动态低温核磁共振测量，可以清楚地观察到两个H2分子在2中的位置交换。
An open-cage C70 derivative having a 13-membered ring opening (2) was synthesized by a three-step reaction; thermal reaction of C70 with a pyridazine derivative, oxidative cleavage of the CC double bond, and insertion of a sulfur atom to the opening. The structure of 2 was determined by X-ray analysis. One H2 molecule was introduced into 2 to give H2@2 in 97% yield. Furthermore, two H2 molecules were encapsulated in 2 in 3% yield. The positional exchange of two H2 molecules inside 2 was clearly observed by the dynamic low-temperature NMR measurements.