X-ray observation of a helium atom and placing a nitrogen atom inside He@C60 and He@C70

被引：43

作者：

Morinaka, Yuta ^{[1
]}

Sato, Satoru ^{[2
]}

Wakamiya, Atsushi ^{[1
]}

Nikawa, Hidefumi ^{[2
]}

Mizorogi, Naomi ^{[2
]}

Tanabe, Fumiyuki ^{[1
]}

Murata, Michihisa ^{[1
]}

Komatsu, Koichi ^{[1
]}

Furukawa, Ko ^{[3
]}

Kato, Tatsuhisa ^{[4
]}

Nagase, Shigeru ^{[5
]}

Akasaka, Takeshi ^{[2
]}

Murata, Yasujiro ^{[1
,6
]}

机构：

[1] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan

[2] Univ Tsukuba, Life Sci Ctr Tsukuba Adv Res Alliance, Tsukuba, Ibaraki 3058577, Japan

[3] Inst Mol Sci, Okazaki, Aichi 4448585, Japan

[4] Kyoto Univ, Inst Promot Excellence Higher Educ, Kyoto 6068501, Japan

[5] Kyoto Univ, Fukui Inst Fundamental Chem, Kyoto 6068103, Japan

[6] PRESTO, JST, Kawaguchi, Saitama 3320012, Japan

来源：

NATURE COMMUNICATIONS | 2013年 / 4卷

关键词：

MOLECULAR-ORBITAL METHODS; HE-3; NMR; CAGE; FULLERENES; C-60; ENCAPSULATION; HYDROGEN;

D O I：

10.1038/ncomms2574

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Single crystal X-ray analysis has been used as a powerful method to determine the structure of molecules. However, crystallographic data containing helium has not been reported, owing to the difficulty in embedding helium into crystalline materials. Here we report the X-ray diffraction study of He@C-60 and the clear observation of a single helium atom inside C-60. In addition, the close packing of a helium atom and a nitrogen atom inside fullerenes is realized using two stepwise insertion techniques, that is, molecular surgery to synthesize the fullerenes encapsulating a helium atom, followed by nitrogen radio-frequency plasma methods to generate the fullerenes encapsulating both helium and nitrogen atoms. Electron spin resonance analysis reveals that the encapsulated helium atom has a small but detectable influence on the electronic properties of the highly reactive nitrogen atom coexisting inside the fullerene, suggesting the potential usage of helium for controlling electronic properties of reactive species.

引用

页数：5

共 39 条

[1]

Akasaka T., 2002, Endofullerenes: A New Family of Carbon Clusters

[2]

Aoyagi S, 2010, NAT CHEM, V2, P678, DOI [10.1038/NCHEM.698, 10.1038/nchem.698]

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