期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 82, 期 11, 页码 5868-5872出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.7b00730
关键词
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资金
- Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan [JP15H05760, JP16H04187, JP17K04970]
- Nanotechnology Platform of MEXT, Japan, at the Center for Integrated Nanotechnology Support, Tohoku University
- Grants-in-Aid for Scientific Research [17K04970] Funding Source: KAKEN
Organic functionalization of lithium-ion-containing [60]fullerene, Li+@C-60, was performed by using diphenyl(diazo)methane as a stable, readily available diazo compound to obtain lithium-ion-containing [5,6]- and [6,6]-diphenylmethano[60]fullerenes, Li+@C61Ph2. The bis(trifluoromethanesulfonyl)imide (TFSI) salts of [5,6]- and [6,6]-Li+@C61Ph2 were successfully separated by using a cation exchange column with eluent containing LiTFSI. Improved separation protocol and high crystallinity of ionic components in less polar solvents enabled separate crystallization of each isomer. Both [5,6]-open and [6,6]-closed structures of Li+@C61Ph2 were determined by synchrotron radiation X-ray crystallography. Elucidating the [5,6] -open methano[60]fullerene (fulleroid) structure will contribute to materials research on fulleroids.
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